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mint.md

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Mint

Mint Pool assets in exchange for transferring assets to the Pool account.

Transaction Group:

  1. Pay - pay fees in Algo from Pooler to Pool
    • fees to cover Tx 1,4
    • Signed by Pooler
{
  "txn": {
    "type": "pay",
    "rcv": "{POOL_ADDRESS}",
    "snd": "{POOLER_ADDRESS}",
    "amt": 2000,
    "fee": 1000,
    ...
  },
  "sig": "{POOLER_SIG}",
}
  1. App Call - NoOp call to Validator App with args ['mint'], with Pooler account
    • Signed by Pool LogicSig
{
  "txn": {
    "type": "appl",
    "snd": "{POOL_ADDRESS}",
    "apid": {VALIDATOR_APP_ID},
    "apan": 0, // OnComplete: NoOp
    "apaa": ['bWludA=='], // ['mint']
    "apat": [{POOLER_ADDRESS}],
    "apas": [{ASSET1_ID}, {ASSET1_ID}, {LIQUIDITY_ASSET_ID}] // or just [{ASSET1_ID}, {LIQUIDITY_ASSET_ID}] if asset 2 is Algo
    "fee": 1000,
    ...
  },
  "lsig": "{POOL_LOGICSIG}",
}
  1. AssetTransfer - Transfer of asset 1 from Pooler to Pool
    • Signed by Pooler
{
  "txn": {
    "type": "axfer",
    "arcv": "{POOL_ADDRESS}",
    "snd": "{POOLER_ADDRESS}",
    "xaid": {ASSET_1_ID},
    "aamt": {ASSET_1_AMOUNT},
    "fee": 1000,
    ...
  },
  "sig": "{POOLER_SIG}",
}
  1. (a) AssetTransfer - Transfer of asset 2 from Pooler to Pool
    • If asset 2 is an ASA
    • Signed by Pooler
{
  "txn": {
    "type": "axfer",
    "arcv": "{POOL_ADDRESS}",
    "snd": "{POOLER_ADDRESS}",
    "xaid": {ASSET_2_ID},
    "aamt": {ASSET_2_AMOUNT},
    "fee": 1000,
    ...
  },
  "sig": "{POOLER_SIG}",
}
  1. (b) Pay - Transfer of Algo from Pooler to Pool
    • If asset 2 is Algo
    • Signed by Pooler
{
  "txn": {
    "type": "pay",
    "rcv": "{POOL_ADDRESS}",
    "snd": "{POOLER_ADDRESS}",
    "amt": {ASSET_2_AMOUNT},
    "fee": 1000,
    ...
  },
  "sig": "{POOLER_SIG}",
}
  1. AssetTransfer - Transfer of liquidity token asset from Pool to Pooler
    • Signed by Pool LogicSig
    • Amount is minimum expected amount of liquidity token allowing for slippage
{
  "txn": {
    "type": "axfer",
    "arcv": "{POOLER_ADDRESS}",
    "snd": "{POOL_ADDRESS}",
    "xaid": {LIQUIDITY_ASSET_ID},
    "aamt": {LIQUIDITY_ASSET_AMOUNT},
    "fee": 1000,
    ...
  },
  "lsig": "{POOL_LOGICSIG}",
}

Validator App State

Global State

None

Pool Account Local State

  • a1: {ASSET1_ID}
  • a2: {ASSET2_ID}
  • o{LIQUIDITY_ASSET_ID}: {o} // total outstanding unredeemed liquidity asset amount

Pooler Account Local State

  • {POOL_ADDRESS}e{LIQUIDITY_ASSET_ID}: {e} // excess liquidity asset amount available for redemption