diff --git a/docs/reference-guides/block-api/block-supports.md b/docs/reference-guides/block-api/block-supports.md
index 683e4f134d9877..880dd844127105 100644
--- a/docs/reference-guides/block-api/block-supports.md
+++ b/docs/reference-guides/block-api/block-supports.md
@@ -57,6 +57,15 @@ supports: {
 }
 ```
 
+If this property is set to `true` or `html`, the id attribute of the root element of the saved markup are referenced. If this property is set to `delimiter`, the attribute is saved as a comment delimiter. This value should be used for dynamic blocks that don't save markup.
+
+```js
+// Declare support for anchor links.
+supports: {
+	anchor: 'delimiter'
+}
+```
+
 ## align
 
 -   Type: `boolean` or `array`
diff --git a/docs/reference-guides/core-blocks.md b/docs/reference-guides/core-blocks.md
index bf0d3bf71d06f9..0e16a9cb18a240 100644
--- a/docs/reference-guides/core-blocks.md
+++ b/docs/reference-guides/core-blocks.md
@@ -619,7 +619,7 @@ Show minutes required to finish reading the post. ([Source](https://github.com/W
 -	**Name:** core/post-time-to-read
 -	**Experimental:** true
 -	**Category:** theme
--	**Supports:** color (background, gradients, text), spacing (margin, padding), typography (fontSize, lineHeight), ~~html~~
+-	**Supports:** anchor, color (background, gradients, text), spacing (margin, padding), typography (fontSize, lineHeight), ~~html~~
 -	**Attributes:** textAlign
 
 ## Title
diff --git a/lib/block-supports/anchor.php b/lib/block-supports/anchor.php
index 8f704a5019b365..7c7842d5cfc3b1 100644
--- a/lib/block-supports/anchor.php
+++ b/lib/block-supports/anchor.php
@@ -11,8 +11,8 @@
  * @param WP_Block_Type $block_type Block Type.
  */
 function gutenberg_register_anchor_support( $block_type ) {
-	$has_anchor_support = _wp_array_get( $block_type->supports, array( 'anchor' ), true );
-	if ( ! $has_anchor_support ) {
+	$anchor_support = _wp_array_get( $block_type->supports, array( 'anchor' ), true );
+	if ( ! $anchor_support ) {
 		return;
 	}
 
@@ -20,7 +20,16 @@ function gutenberg_register_anchor_support( $block_type ) {
 		$block_type->attributes = array();
 	}
 
-	if ( ! array_key_exists( 'anchor', $block_type->attributes ) ) {
+	if ( true === $anchor_support || 'html' === $anchor_support ) {
+		$block_type->attributes['anchor'] = array(
+			'type'      => 'string',
+			'source'    => 'attribute',
+			'attribute' => 'id',
+			'selector'  => '*',
+		);
+	}
+
+	if ( 'delimiter' === $anchor_support ) {
 		$block_type->attributes['anchor'] = array(
 			'type' => 'string',
 		);
diff --git a/packages/block-editor/src/hooks/anchor.js b/packages/block-editor/src/hooks/anchor.js
index b3fdcd65c541b7..f378a7ab9888a6 100644
--- a/packages/block-editor/src/hooks/anchor.js
+++ b/packages/block-editor/src/hooks/anchor.js
@@ -21,13 +21,17 @@ import { useBlockEditingMode } from '../components/block-editing-mode';
  */
 const ANCHOR_REGEX = /[\s#]/g;
 
-const ANCHOR_SCHEMA = {
+const ANCHOR_SCHEMA_HTML = {
 	type: 'string',
 	source: 'attribute',
 	attribute: 'id',
 	selector: '*',
 };
 
+const ANCHOR_SCHEMA_DELIMITER = {
+	type: 'string',
+};
+
 /**
  * Filters registered block settings, extending attributes with anchor using ID
  * of the first node.
@@ -43,10 +47,16 @@ export function addAttribute( settings ) {
 	}
 	if ( hasBlockSupport( settings, 'anchor' ) ) {
 		// Gracefully handle if settings.attributes is undefined.
-		settings.attributes = {
-			...settings.attributes,
-			anchor: ANCHOR_SCHEMA,
-		};
+		const { anchor } = settings.supports;
+		if ( [ true, 'html', 'delimiter' ].includes( anchor ) ) {
+			settings.attributes = {
+				...settings.attributes,
+				anchor:
+					anchor === 'delimiter'
+						? ANCHOR_SCHEMA_DELIMITER
+						: ANCHOR_SCHEMA_HTML,
+			};
+		}
 	}
 
 	return settings;
diff --git a/packages/block-editor/src/hooks/test/anchor.js b/packages/block-editor/src/hooks/test/anchor.js
index a919fad575312e..caccc66b34293a 100644
--- a/packages/block-editor/src/hooks/test/anchor.js
+++ b/packages/block-editor/src/hooks/test/anchor.js
@@ -29,15 +29,48 @@ describe( 'anchor', () => {
 			expect( settings.attributes ).toBe( undefined );
 		} );
 
-		it( 'should assign a new anchor attribute', () => {
+		[ false, 'incorrect' ].forEach( ( value ) => {
+			it( `should do nothing if value is ${ value }`, () => {
+				const settings = registerBlockType( {
+					...blockSettings,
+					supports: {
+						anchor: value,
+					},
+				} );
+
+				expect( settings.attributes ).toBe( undefined );
+			} );
+		} );
+
+		[ true, 'html' ].forEach( ( value ) => {
+			it( `should assign a new anchor attribute referencing html if value is ${ value }`, () => {
+				const settings = registerBlockType( {
+					...blockSettings,
+					supports: {
+						anchor: value,
+					},
+				} );
+
+				expect( settings.attributes.anchor ).toEqual( {
+					attribute: 'id',
+					selector: '*',
+					source: 'attribute',
+					type: 'string',
+				} );
+			} );
+		} );
+
+		it( 'should assign a new anchor attribute referencing comment delimiter if value is delimiter', () => {
 			const settings = registerBlockType( {
 				...blockSettings,
 				supports: {
-					anchor: true,
+					anchor: `delimiter`,
 				},
 			} );
 
-			expect( settings.attributes ).toHaveProperty( 'anchor' );
+			expect( settings.attributes.anchor ).toEqual( {
+				type: 'string',
+			} );
 		} );
 
 		it( 'should not override attributes defined in settings', () => {
diff --git a/packages/block-library/src/archives/block.json b/packages/block-library/src/archives/block.json
index edc6895e14b06f..5f857c35ce80a4 100644
--- a/packages/block-library/src/archives/block.json
+++ b/packages/block-library/src/archives/block.json
@@ -26,7 +26,7 @@
 	},
 	"supports": {
 		"align": true,
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"spacing": {
 			"margin": true,
diff --git a/packages/block-library/src/avatar/block.json b/packages/block-library/src/avatar/block.json
index 3fbb6dd9221aec..f014c860c81ac2 100644
--- a/packages/block-library/src/avatar/block.json
+++ b/packages/block-library/src/avatar/block.json
@@ -25,7 +25,7 @@
 	},
 	"usesContext": [ "postType", "postId", "commentId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"align": true,
 		"alignWide": false,
diff --git a/packages/block-library/src/calendar/block.json b/packages/block-library/src/calendar/block.json
index c772cf58411f06..5537df9d4249e4 100644
--- a/packages/block-library/src/calendar/block.json
+++ b/packages/block-library/src/calendar/block.json
@@ -17,7 +17,7 @@
 	},
 	"supports": {
 		"align": true,
-		"anchor": true,
+		"anchor": "delimiter",
 		"color": {
 			"link": true,
 			"__experimentalSkipSerialization": [ "text", "background" ],
diff --git a/packages/block-library/src/categories/block.json b/packages/block-library/src/categories/block.json
index a90a527e35c451..af014bcd2ef7f5 100644
--- a/packages/block-library/src/categories/block.json
+++ b/packages/block-library/src/categories/block.json
@@ -30,7 +30,7 @@
 	},
 	"supports": {
 		"align": true,
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"spacing": {
 			"margin": true,
diff --git a/packages/block-library/src/comment-author-avatar/block.json b/packages/block-library/src/comment-author-avatar/block.json
index 2b6cefd6db9983..a4de7b8d45e49c 100644
--- a/packages/block-library/src/comment-author-avatar/block.json
+++ b/packages/block-library/src/comment-author-avatar/block.json
@@ -20,7 +20,7 @@
 	},
 	"usesContext": [ "commentId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"inserter": false,
 		"__experimentalBorder": {
diff --git a/packages/block-library/src/comment-author-name/block.json b/packages/block-library/src/comment-author-name/block.json
index cfa036fa80e2d3..9245c1dc7ab3b1 100644
--- a/packages/block-library/src/comment-author-name/block.json
+++ b/packages/block-library/src/comment-author-name/block.json
@@ -22,7 +22,7 @@
 	},
 	"usesContext": [ "commentId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"spacing": {
 			"margin": true,
diff --git a/packages/block-library/src/comment-content/block.json b/packages/block-library/src/comment-content/block.json
index 69917ccce6aeaf..72b4a442abde48 100644
--- a/packages/block-library/src/comment-content/block.json
+++ b/packages/block-library/src/comment-content/block.json
@@ -14,7 +14,7 @@
 		}
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"color": {
 			"gradients": true,
 			"link": true,
diff --git a/packages/block-library/src/comment-date/block.json b/packages/block-library/src/comment-date/block.json
index ea1e2633381392..abf44e991e598d 100644
--- a/packages/block-library/src/comment-date/block.json
+++ b/packages/block-library/src/comment-date/block.json
@@ -18,7 +18,7 @@
 	},
 	"usesContext": [ "commentId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/comment-edit-link/block.json b/packages/block-library/src/comment-edit-link/block.json
index e695ddc3801f77..3eb499eb8fd602 100644
--- a/packages/block-library/src/comment-edit-link/block.json
+++ b/packages/block-library/src/comment-edit-link/block.json
@@ -18,7 +18,7 @@
 		}
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"link": true,
diff --git a/packages/block-library/src/comment-reply-link/block.json b/packages/block-library/src/comment-reply-link/block.json
index 7ed60f34f581f9..694ca402f57329 100644
--- a/packages/block-library/src/comment-reply-link/block.json
+++ b/packages/block-library/src/comment-reply-link/block.json
@@ -14,7 +14,7 @@
 		}
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"color": {
 			"gradients": true,
 			"link": true,
diff --git a/packages/block-library/src/comment-template/block.json b/packages/block-library/src/comment-template/block.json
index 9d0eb98684f142..af61bd58755b89 100644
--- a/packages/block-library/src/comment-template/block.json
+++ b/packages/block-library/src/comment-template/block.json
@@ -10,7 +10,7 @@
 	"usesContext": [ "postId" ],
 	"supports": {
 		"align": true,
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"reusable": false,
 		"spacing": {
diff --git a/packages/block-library/src/comments-pagination-next/block.json b/packages/block-library/src/comments-pagination-next/block.json
index f0cee1a1cdbe68..48c8a0036fd38b 100644
--- a/packages/block-library/src/comments-pagination-next/block.json
+++ b/packages/block-library/src/comments-pagination-next/block.json
@@ -14,7 +14,7 @@
 	},
 	"usesContext": [ "postId", "comments/paginationArrow" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/comments-pagination-numbers/block.json b/packages/block-library/src/comments-pagination-numbers/block.json
index 0ab4f965ff1cd6..edb330e88a44a9 100644
--- a/packages/block-library/src/comments-pagination-numbers/block.json
+++ b/packages/block-library/src/comments-pagination-numbers/block.json
@@ -9,7 +9,7 @@
 	"textdomain": "default",
 	"usesContext": [ "postId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/comments-pagination-previous/block.json b/packages/block-library/src/comments-pagination-previous/block.json
index 211e1a33305a0d..c7e2e464900f52 100644
--- a/packages/block-library/src/comments-pagination-previous/block.json
+++ b/packages/block-library/src/comments-pagination-previous/block.json
@@ -14,7 +14,7 @@
 	},
 	"usesContext": [ "postId", "comments/paginationArrow" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/comments-pagination/block.json b/packages/block-library/src/comments-pagination/block.json
index d7c8be4b8eaa25..bc9ba4db07e29a 100644
--- a/packages/block-library/src/comments-pagination/block.json
+++ b/packages/block-library/src/comments-pagination/block.json
@@ -17,7 +17,7 @@
 		"comments/paginationArrow": "paginationArrow"
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": true,
 		"reusable": false,
 		"html": false,
diff --git a/packages/block-library/src/comments/block.json b/packages/block-library/src/comments/block.json
index 19490f6e99eb47..50fd0e73aa93a0 100644
--- a/packages/block-library/src/comments/block.json
+++ b/packages/block-library/src/comments/block.json
@@ -18,7 +18,7 @@
 	},
 	"supports": {
 		"align": [ "wide", "full" ],
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/home-link/block.json b/packages/block-library/src/home-link/block.json
index df964ad76bc68d..5fa9ec748efca8 100644
--- a/packages/block-library/src/home-link/block.json
+++ b/packages/block-library/src/home-link/block.json
@@ -22,7 +22,7 @@
 		"style"
 	],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false,
 		"typography": {
diff --git a/packages/block-library/src/latest-comments/block.json b/packages/block-library/src/latest-comments/block.json
index 80fa4f5d2d063a..be7aff622febe4 100644
--- a/packages/block-library/src/latest-comments/block.json
+++ b/packages/block-library/src/latest-comments/block.json
@@ -29,7 +29,7 @@
 	},
 	"supports": {
 		"align": true,
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"spacing": {
 			"margin": true,
diff --git a/packages/block-library/src/latest-posts/block.json b/packages/block-library/src/latest-posts/block.json
index 9b451f5875c733..53bb215fa3c37b 100644
--- a/packages/block-library/src/latest-posts/block.json
+++ b/packages/block-library/src/latest-posts/block.json
@@ -84,7 +84,7 @@
 	},
 	"supports": {
 		"align": true,
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/loginout/block.json b/packages/block-library/src/loginout/block.json
index 3ba18dcf17143f..ff8ca41cae855b 100644
--- a/packages/block-library/src/loginout/block.json
+++ b/packages/block-library/src/loginout/block.json
@@ -18,7 +18,7 @@
 		}
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"className": true,
 		"typography": {
 			"fontSize": true,
diff --git a/packages/block-library/src/navigation/block.json b/packages/block-library/src/navigation/block.json
index ce2bed0d8837f6..718b0884438770 100644
--- a/packages/block-library/src/navigation/block.json
+++ b/packages/block-library/src/navigation/block.json
@@ -91,7 +91,7 @@
 	},
 	"supports": {
 		"align": [ "wide", "full" ],
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"inserter": true,
 		"typography": {
diff --git a/packages/block-library/src/page-list/block.json b/packages/block-library/src/page-list/block.json
index 0fa309431202a9..3a2495fc36bb6c 100644
--- a/packages/block-library/src/page-list/block.json
+++ b/packages/block-library/src/page-list/block.json
@@ -33,7 +33,7 @@
 		"openSubmenusOnClick"
 	],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false,
 		"typography": {
diff --git a/packages/block-library/src/post-author-biography/block.json b/packages/block-library/src/post-author-biography/block.json
index a2e5f327acfeb7..8a72ff3ca35bc0 100644
--- a/packages/block-library/src/post-author-biography/block.json
+++ b/packages/block-library/src/post-author-biography/block.json
@@ -13,7 +13,7 @@
 	},
 	"usesContext": [ "postType", "postId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"spacing": {
 			"margin": true,
 			"padding": true
diff --git a/packages/block-library/src/post-author-name/block.json b/packages/block-library/src/post-author-name/block.json
index 2340636e0c63a4..de218666df43b0 100644
--- a/packages/block-library/src/post-author-name/block.json
+++ b/packages/block-library/src/post-author-name/block.json
@@ -21,7 +21,7 @@
 	},
 	"usesContext": [ "postType", "postId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"spacing": {
 			"margin": true,
diff --git a/packages/block-library/src/post-author/block.json b/packages/block-library/src/post-author/block.json
index 4a8e0433868e53..dccd603df49484 100644
--- a/packages/block-library/src/post-author/block.json
+++ b/packages/block-library/src/post-author/block.json
@@ -35,7 +35,7 @@
 	},
 	"usesContext": [ "postType", "postId", "queryId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"spacing": {
 			"margin": true,
diff --git a/packages/block-library/src/post-comments-count/block.json b/packages/block-library/src/post-comments-count/block.json
index c56039a1fbee04..ac51100106d627 100644
--- a/packages/block-library/src/post-comments-count/block.json
+++ b/packages/block-library/src/post-comments-count/block.json
@@ -14,7 +14,7 @@
 	},
 	"usesContext": [ "postId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/post-comments-form/block.json b/packages/block-library/src/post-comments-form/block.json
index 793d14d74ba7ba..cee362aaec28f6 100644
--- a/packages/block-library/src/post-comments-form/block.json
+++ b/packages/block-library/src/post-comments-form/block.json
@@ -13,7 +13,7 @@
 	},
 	"usesContext": [ "postId", "postType" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/post-comments-link/block.json b/packages/block-library/src/post-comments-link/block.json
index b0ff71adca1547..a5fe6a2e8c4af5 100644
--- a/packages/block-library/src/post-comments-link/block.json
+++ b/packages/block-library/src/post-comments-link/block.json
@@ -14,7 +14,7 @@
 		}
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"link": true,
diff --git a/packages/block-library/src/post-content/block.json b/packages/block-library/src/post-content/block.json
index 56834a980baed1..ee3bc89d5d646b 100644
--- a/packages/block-library/src/post-content/block.json
+++ b/packages/block-library/src/post-content/block.json
@@ -8,7 +8,7 @@
 	"textdomain": "default",
 	"usesContext": [ "postId", "postType", "queryId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": [ "wide", "full" ],
 		"html": false,
 		"__experimentalLayout": true,
diff --git a/packages/block-library/src/post-date/block.json b/packages/block-library/src/post-date/block.json
index 41c45a4a57e26e..868fff57013c33 100644
--- a/packages/block-library/src/post-date/block.json
+++ b/packages/block-library/src/post-date/block.json
@@ -24,7 +24,7 @@
 	},
 	"usesContext": [ "postId", "postType", "queryId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/post-excerpt/block.json b/packages/block-library/src/post-excerpt/block.json
index 53a92cb0bda639..87f7531f9d081b 100644
--- a/packages/block-library/src/post-excerpt/block.json
+++ b/packages/block-library/src/post-excerpt/block.json
@@ -24,7 +24,7 @@
 	},
 	"usesContext": [ "postId", "postType", "queryId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/post-featured-image/block.json b/packages/block-library/src/post-featured-image/block.json
index c6007785cd82ac..d3bb38b7dba8f3 100644
--- a/packages/block-library/src/post-featured-image/block.json
+++ b/packages/block-library/src/post-featured-image/block.json
@@ -56,7 +56,7 @@
 	"usesContext": [ "postId", "postType", "queryId" ],
 	"supports": {
 		"align": [ "left", "right", "center", "wide", "full" ],
-		"anchor": true,
+		"anchor": "delimiter",
 		"color": {
 			"__experimentalDuotone": "img, .wp-block-post-featured-image__placeholder, .components-placeholder__illustration, .components-placeholder::before",
 			"text": false,
diff --git a/packages/block-library/src/post-navigation-link/block.json b/packages/block-library/src/post-navigation-link/block.json
index 2bdfa654798ee6..9badc53502a4b5 100644
--- a/packages/block-library/src/post-navigation-link/block.json
+++ b/packages/block-library/src/post-navigation-link/block.json
@@ -31,7 +31,7 @@
 		}
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/post-template/block.json b/packages/block-library/src/post-template/block.json
index 1a5426253dbf3f..a6be461f8bb629 100644
--- a/packages/block-library/src/post-template/block.json
+++ b/packages/block-library/src/post-template/block.json
@@ -19,7 +19,7 @@
 		"reusable": false,
 		"html": false,
 		"align": [ "wide", "full" ],
-		"anchor": true,
+		"anchor": "delimiter",
 		"__experimentalLayout": true,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/post-terms/block.json b/packages/block-library/src/post-terms/block.json
index 1633c7c01b82ca..01ac77916675c2 100644
--- a/packages/block-library/src/post-terms/block.json
+++ b/packages/block-library/src/post-terms/block.json
@@ -28,7 +28,7 @@
 	},
 	"usesContext": [ "postId", "postType" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/post-time-to-read/block.json b/packages/block-library/src/post-time-to-read/block.json
index 2b7d7936094f7c..2a12e9099bd5f8 100644
--- a/packages/block-library/src/post-time-to-read/block.json
+++ b/packages/block-library/src/post-time-to-read/block.json
@@ -22,6 +22,7 @@
 			}
 		},
 		"html": false,
+		"anchor": "delimiter",
 		"spacing": {
 			"margin": true,
 			"padding": true
diff --git a/packages/block-library/src/post-title/block.json b/packages/block-library/src/post-title/block.json
index 66377292db68c0..47cb22a1324ee4 100644
--- a/packages/block-library/src/post-title/block.json
+++ b/packages/block-library/src/post-title/block.json
@@ -31,7 +31,7 @@
 	},
 	"supports": {
 		"align": [ "wide", "full" ],
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/query-no-results/block.json b/packages/block-library/src/query-no-results/block.json
index 789dcc8e66f605..5b583997540414 100644
--- a/packages/block-library/src/query-no-results/block.json
+++ b/packages/block-library/src/query-no-results/block.json
@@ -9,7 +9,7 @@
 	"textdomain": "default",
 	"usesContext": [ "queryId", "query" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": true,
 		"reusable": false,
 		"html": false,
diff --git a/packages/block-library/src/query-pagination-next/block.json b/packages/block-library/src/query-pagination-next/block.json
index 7c4f5797efa903..98e23834ddefa0 100644
--- a/packages/block-library/src/query-pagination-next/block.json
+++ b/packages/block-library/src/query-pagination-next/block.json
@@ -14,7 +14,7 @@
 	},
 	"usesContext": [ "queryId", "query", "paginationArrow", "showLabel" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/query-pagination-numbers/block.json b/packages/block-library/src/query-pagination-numbers/block.json
index a05faff5f1b52b..63d14ee7feef72 100644
--- a/packages/block-library/src/query-pagination-numbers/block.json
+++ b/packages/block-library/src/query-pagination-numbers/block.json
@@ -9,7 +9,7 @@
 	"textdomain": "default",
 	"usesContext": [ "queryId", "query" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/query-pagination-previous/block.json b/packages/block-library/src/query-pagination-previous/block.json
index 2efda01e20b6bd..eeca94c5ee54ac 100644
--- a/packages/block-library/src/query-pagination-previous/block.json
+++ b/packages/block-library/src/query-pagination-previous/block.json
@@ -14,7 +14,7 @@
 	},
 	"usesContext": [ "queryId", "query", "paginationArrow", "showLabel" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/query-pagination/block.json b/packages/block-library/src/query-pagination/block.json
index 7217a3eb4f1a38..bf9f868ba6f69c 100644
--- a/packages/block-library/src/query-pagination/block.json
+++ b/packages/block-library/src/query-pagination/block.json
@@ -23,7 +23,7 @@
 		"showLabel": "showLabel"
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": true,
 		"reusable": false,
 		"html": false,
diff --git a/packages/block-library/src/query-title/block.json b/packages/block-library/src/query-title/block.json
index 029762c321e399..fee1795c49bd0d 100644
--- a/packages/block-library/src/query-title/block.json
+++ b/packages/block-library/src/query-title/block.json
@@ -27,7 +27,7 @@
 		}
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": [ "wide", "full" ],
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/query/block.json b/packages/block-library/src/query/block.json
index 50733930b78dc5..5e79f67f38db9e 100644
--- a/packages/block-library/src/query/block.json
+++ b/packages/block-library/src/query/block.json
@@ -43,7 +43,7 @@
 	},
 	"supports": {
 		"align": [ "wide", "full" ],
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"__experimentalLayout": true
 	},
diff --git a/packages/block-library/src/read-more/block.json b/packages/block-library/src/read-more/block.json
index ed2b23c3b7f0fd..1aeeb53faa3f5e 100644
--- a/packages/block-library/src/read-more/block.json
+++ b/packages/block-library/src/read-more/block.json
@@ -17,7 +17,7 @@
 	},
 	"usesContext": [ "postId" ],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false,
 		"color": {
 			"gradients": true,
diff --git a/packages/block-library/src/rss/block.json b/packages/block-library/src/rss/block.json
index 2e3fd4b2d385e1..7b501ab3e41296 100644
--- a/packages/block-library/src/rss/block.json
+++ b/packages/block-library/src/rss/block.json
@@ -43,7 +43,7 @@
 	},
 	"supports": {
 		"align": true,
-		"anchor": true,
+		"anchor": "delimiter",
 		"html": false
 	},
 	"editorStyle": "wp-block-rss-editor",
diff --git a/packages/block-library/src/search/block.json b/packages/block-library/src/search/block.json
index 387295ebb36dea..ba2a86dd5b9c1a 100644
--- a/packages/block-library/src/search/block.json
+++ b/packages/block-library/src/search/block.json
@@ -46,7 +46,7 @@
 	},
 	"supports": {
 		"align": [ "left", "center", "right" ],
-		"anchor": true,
+		"anchor": "delimiter",
 		"color": {
 			"gradients": true,
 			"__experimentalSkipSerialization": true,
diff --git a/packages/block-library/src/site-logo/block.json b/packages/block-library/src/site-logo/block.json
index 8eba39b91c7ad4..894ac93a33f636 100644
--- a/packages/block-library/src/site-logo/block.json
+++ b/packages/block-library/src/site-logo/block.json
@@ -31,7 +31,7 @@
 	},
 	"supports": {
 		"html": false,
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": true,
 		"alignWide": false,
 		"color": {
diff --git a/packages/block-library/src/site-tagline/block.json b/packages/block-library/src/site-tagline/block.json
index a11eab4fbc243b..5331af442362c5 100644
--- a/packages/block-library/src/site-tagline/block.json
+++ b/packages/block-library/src/site-tagline/block.json
@@ -14,7 +14,7 @@
 	},
 	"example": {},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": [ "wide", "full" ],
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/site-title/block.json b/packages/block-library/src/site-title/block.json
index b69acda934fda2..d5786ecdb481f3 100644
--- a/packages/block-library/src/site-title/block.json
+++ b/packages/block-library/src/site-title/block.json
@@ -27,7 +27,7 @@
 		"viewportWidth": 500
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": [ "wide", "full" ],
 		"html": false,
 		"color": {
diff --git a/packages/block-library/src/social-link/block.json b/packages/block-library/src/social-link/block.json
index 140cc123ec484c..b01b0522c794af 100644
--- a/packages/block-library/src/social-link/block.json
+++ b/packages/block-library/src/social-link/block.json
@@ -30,7 +30,7 @@
 		"iconBackgroundColorValue"
 	],
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"reusable": false,
 		"html": false
 	},
diff --git a/packages/block-library/src/tag-cloud/block.json b/packages/block-library/src/tag-cloud/block.json
index ec1e3335127193..715fd09ee461bf 100644
--- a/packages/block-library/src/tag-cloud/block.json
+++ b/packages/block-library/src/tag-cloud/block.json
@@ -36,7 +36,7 @@
 	],
 	"supports": {
 		"html": false,
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": true,
 		"spacing": {
 			"margin": true,
diff --git a/packages/block-library/src/template-part/block.json b/packages/block-library/src/template-part/block.json
index 282ac2ca22127a..f817cfacca24a1 100644
--- a/packages/block-library/src/template-part/block.json
+++ b/packages/block-library/src/template-part/block.json
@@ -21,7 +21,7 @@
 		}
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": true,
 		"html": false,
 		"reusable": false
diff --git a/packages/block-library/src/term-description/block.json b/packages/block-library/src/term-description/block.json
index bd96f3405f54f2..a60ec5db658341 100644
--- a/packages/block-library/src/term-description/block.json
+++ b/packages/block-library/src/term-description/block.json
@@ -12,7 +12,7 @@
 		}
 	},
 	"supports": {
-		"anchor": true,
+		"anchor": "delimiter",
 		"align": [ "wide", "full" ],
 		"html": false,
 		"color": {
diff --git a/packages/server-side-render/src/server-side-render.js b/packages/server-side-render/src/server-side-render.js
index 69a2183036dd14..aee2921ecfa89b 100644
--- a/packages/server-side-render/src/server-side-render.js
+++ b/packages/server-side-render/src/server-side-render.js
@@ -112,9 +112,15 @@ export default function ServerSideRender( props ) {
 
 		setIsLoading( true );
 
-		let sanitizedAttributes =
-			attributes &&
-			__experimentalSanitizeBlockAttributes( block, attributes );
+		let sanitizedAttributes;
+		if ( attributes ) {
+			// Anchor attribute isn't supported on the server side and
+			// should be excluded from the parameters.
+			const { anchor, ...restAttributes } = attributes;
+			sanitizedAttributes =
+				restAttributes &&
+				__experimentalSanitizeBlockAttributes( block, restAttributes );
+		}
 
 		if ( skipBlockSupportAttributes ) {
 			sanitizedAttributes =
diff --git a/schemas/json/block.json b/schemas/json/block.json
index 5b92a654fbc4a5..a422bc8411f7a6 100644
--- a/schemas/json/block.json
+++ b/schemas/json/block.json
@@ -222,9 +222,17 @@
 			"description": "It contains as set of options to control features used in the editor. See the supports documentation at https://developer.wordpress.org/block-editor/reference-guides/block-api/block-supports/ for more details.",
 			"properties": {
 				"anchor": {
-					"type": "boolean",
-					"description": "Anchors let you link directly to a specific block on a page. This property adds a field to define an id for the block and a button to copy the direct link.",
-					"default": false
+					"description": "Anchors let you link directly to a specific block on a page. This property adds a field to define an id for the block and a button to copy the direct link. If this property is set to `true` or `html`, the id attribute of the root element of the saved markup are referenced. If this property is set to `delimiter`, the attribute is saved as a comment delimiter.",
+					"default": false,
+					"oneOf": [
+						{
+							"type": "boolean"
+						},
+						{
+							"type": "string",
+							"enum": [ "html", "delimiter" ]
+						}
+					]
 				},
 				"align": {
 					"default": false,