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redeem.md

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description
Claim back 'change' due to slippage in Mint/Burn/Swap process.

Redeem

Transaction Group

0. Pay - pay fees in Algo from PoolerSwapper to Pool

  • fees to cover Tx 1,2
  • Signed by Pooler
{
  "txn": {
   "type": "pay",
   "rcv": "{POOL_ADDRESS}",
   "snd": "{POOLER/SWAPPER_ADDRESS",
   "amt": 2000,
   "fee": 1000,
   ...
  },
  "sig": "{POOLER/SWAPPER_SIG}",
}
  1. App Call - NoOp call to Validator App with args ['redeem'], with Pooler/Swapper account
    • Signed by Pool LogicSig
{
  "txn": {
    "type": "appl",
    "snd": "{POOL_ADDRESS}",
    "apid": {VALIDATOR_APP_ID},
    "apan": 0, // OnComplete: NoOp
    "apaa": ['cmVkZWVt'], // ['redeem']
    "apas": [{ASSET1_ID}, {ASSET2_ID}, {LIQUIDITY_ASSET_ID}], // or just [{ASSET1_ID}, {LIQUIDITY_ASSET_ID}] if asset 2 is Algo
    "apat": [{POOLER/SWAPPER_ADDRESS}],
    "fee": 1000,
    ...
  },
  "lsig": "{POOL_LOGICSIG}",
}

2. (a) AssetTransfer - Transfer of asset from Pool to Pooler/Swapper

  • If asset is an ASA
  • Signed by Pool LogicSig
{
  "txn": {
    "type": "axfer",
    "arcv": "{POOLER/SWAPPER_ADDRESS}",
    "snd": "{POOL_ADDRESS}",
    "xaid": {ASSET_ID},
    "aamt": {ASSET_AMOUNT},
    "fee": 1000,
    ...
  },
  "lsig": "{POOL_LOGICSIG}",
}

2. (b) Pay - Transfer of Algo from Pool to Pooler/Swapper

  • If asset is Algo
  • Signed by Pool LogicSig
{
  "txn": {
    "type": "pay",
    "rcv": "{POOLER/SWAPPER_ADDRESS}",
    "snd": "{POOL_ADDRESS"},
    "amt": {ASSET_AMOUNT},
    "fee": 1000,
    ...
  },
  "lsig": "{POOL_LOGICSIG}",
}

Validator App State Changes

Global State

None

Pool Account Local State

  • o{LIQUIDITY_ASSET_ID}: {int} // total outstanding unredeemed liquidity asset amount
  • o{ASSET1_ID}: {int} // total outstanding unredeemed asset 1 amount
  • o{ASSET2_ID}: {int} // total outstanding unredeemed asset 2 amount

Pooler/Swapper Account Local State

  • {POOL_ADDRESS}e{LIQUIDITY_ASSET_ID}: {int} // excess liquidity asset amount available for redemption
  • {POOL_ADDRESS}e{ASSET1_ID}: {int} // excess asset 1 amount available for redemption
  • {POOL_ADDRESS}e{ASSET2_ID}: {int} // excess asset 2 amount available for redemption