Random

POST /byron-wallets/{walletId}/coin-selections/random

status: stable

Select coins to cover the given set of payments.

Uses the Random-Improve coin selection algorithm.

Note: Not supported for Byron random wallets.

Path parameters

walletId string(hex) Required

Minimum length is 40, maximum length is 40.

application/json

Body Required

payments array[object] Required
A list of target outputs with amounts specified.

When creating a new transaction, the wallet software ensures that all user-specified transaction outputs have ada amounts that satisfy the ledger minimum UTxO rule:
- If a user-specified transaction output has an ada amount that is zero, the wallet software will automatically assign a minimal amount of ada to the output so that it satisfies the ledger minimum UTxO rule.
- If a user-specified transaction output has an ada amount that is non-zero, the wallet software will verify that the specified amount is large enough to satisfy the ledger minimum UTxO rule. If the amount is not large enough, the wallet software will return a utxo_too_small error, together with a revised ada amount that does satisfy the minimum UTxO rule.
At least 0 elements.
Hide payments attributes Show payments attributes object
- address string(base58|bech32) Required
  
  A sequence of characters that encodes (in Base58 or Bech32) a sequence of bytes which represents an address on the Cardano blockchain. Sequences in Base58 encoding are expected to be legacy Byron addresses, whereas sequences in Bech32 encoding correspond to current Shelley addresses.
  
  For more details, see CIP-0019 — Cardano addresses .
- amount object Required
  
  Coins, in Lovelace. Only relates to 'Ada'. Refer to assets for multi-assets wallets instead.
  Hide amount attributes Show amount attributes object
  
  quantity integer Required
  
  Minimum value is 0.
  
  unit string Required
  
  Value is lovelace.
- assets array[object]
  
  A flat list of assets (possibly empty).
  Hide assets attributes Show assets attributes object
  
  policy_id string(hex) Required
  
  A unique identifier of the asset's monetary policy. The policy controls how assets of this kind are created and destroyed.
  
  The contents are the blake2b-224 hash of the monetary policy script, encoded in hexadecimal.
  
  Minimum length is 56, maximum length is 56.
  
  asset_name string(hex) Required
  
  The asset on-chain type which acts as a sub-identifier within a policy. Although we call it "asset name", the value needn't be text, and it could even be empty.
  
  For policies with a single fungible asset item, asset name is typically an empty string.
  
  This value can be up to 32 bytes of arbitrary data (which is 64 hexadecimal digits).
  
  Maximum length is 64.
  
  quantity integer Required
  
  Number of assets for the given policy_id and asset_name.
  
  Minimum value is 0.

Responses

415 application/json

Unsupported Media Type
Hide response attributes Show response attributes object
- message string Required
  
  May occur when providing an invalid 'Content-Type' header.
- code string Required
  
  Value is unsupported_media_type.
406 application/json

Not Acceptable
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- message string Required
  
  May occur when providing an invalid 'Accept' header.
- code string Required
  
  Value is not_acceptable.
404 application/json

Not Found
Hide response attributes Show response attributes object
- message string Required
  
  May occur when a given walletId does not match with any known wallets (because it has been deleted, or has never existed).
- code string Required
  
  Value is no_such_wallet.
- info object
  
  Hide info attribute Show info attribute object
  
  wallet_id string(hex) Required
  
  A unique identifier for the wallet
  
  Minimum length is 40, maximum length is 40.
400 application/json

Bad Request
Hide response attributes Show response attributes object
- message string Required
  
  May occur when a request is not well-formed; that is, it fails to parse successfully. This could be the case when some required parameters are missing or, when malformed values are provided.
- code string Required
  
  Value is bad_request.
403 application/json

Forbidden
One of:
already_withdrawing object utxo_too_small object no_utxos_available object not_enough_money object insufficient_collateral object cannot_cover_fee object inputs_depleted object invalid_coin_selection object output_token_quantity_exceeds_limit object output_token_bundle_size_exceeds_limit object
Hide attributes Show attributes

message string Required

May occur when submitting a withdrawal while another withdrawal is pending.

code string Required

Value is already_withdrawing.
Hide attributes Show attributes

message string Required

Occurs when a requested output has a quantity of lovelace that is below the minimum required by the ledger.

code string Required

Value is utxo_too_small.

info object

Hide info attributes Show info attributes object

tx_output_index integer Required

Minimum value is 0.

tx_output_lovelace_specified object Required

Coins, in Lovelace. Only relates to 'Ada'. Refer to assets for multi-assets wallets instead.

Hide tx_output_lovelace_specified attributes Show tx_output_lovelace_specified attributes object

quantity integer Required

Minimum value is 0.

unit string Required

Value is lovelace.

tx_output_lovelace_required_minimum object Required

Coins, in Lovelace. Only relates to 'Ada'. Refer to assets for multi-assets wallets instead.

Hide tx_output_lovelace_required_minimum attributes Show tx_output_lovelace_required_minimum attributes object

quantity integer Required

Minimum value is 0.

unit string Required

Value is lovelace.
Hide attributes Show attributes

message string Required

Indicates that the wallet has no unspent transaction outputs (UTxOs) available. A transaction must spend at least one UTxO in order to be accepted for inclusion on the Cardano blockchain.

code string Required

Value is no_utxos_available.
Hide attributes Show attributes

message string Required

Indicates that there's not enough money in the wallet for the operation to succeed.

The 'shortfall' object indicates the additional quantity of each asset that would be needed in order for the operation to succeed.

code string Required

Value is not_enough_money.

info object

Hide info attribute Show info attribute object

shortfall object Required

The additional quantity of each asset that would be needed in order for the operation to succeed.

Hide shortfall attributes Show shortfall attributes object

ada object Required

Coins, in Lovelace. Only relates to 'Ada'. Refer to assets for multi-assets wallets instead.

Hide ada attributes Show ada attributes object

quantity integer Required

Minimum value is 0.

unit string Required

Value is lovelace.

assets array[object] Required

A flat list of assets (possibly empty).

Hide assets attributes Show assets attributes object

policy_id string(hex) Required

A unique identifier of the asset's monetary policy. The policy controls how assets of this kind are created and destroyed.

The contents are the blake2b-224 hash of the monetary policy script, encoded in hexadecimal.

Minimum length is 56, maximum length is 56.

asset_name string(hex) Required

The asset on-chain type which acts as a sub-identifier within a policy. Although we call it "asset name", the value needn't be text, and it could even be empty.

For policies with a single fungible asset item, asset name is typically an empty string.

This value can be up to 32 bytes of arbitrary data (which is 64 hexadecimal digits).

Maximum length is 64.

quantity integer Required

Number of assets for the given policy_id and asset_name.

Minimum value is 0.
Hide attributes Show attributes

message string Required

May occur when the total balance of pure ada UTxOs in the wallet is insufficient to cover the minimum collateral amount required for a transaction requiring collateral.

code string Required

Value is insufficient_collateral.
Hide attributes Show attributes

message string Required

May occur when a transaction can't be balanced for fees.

code string Required

Value is cannot_cover_fee.
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message string Required

May occur when there's enough money to pay for a payment, but not enough UTxO to allow for paying each output independently.

code string Required

Value is inputs_depleted.
Hide attributes Show attributes

message string Required

Should never happen unless the server screwed up with the creation of a coin selection.

code string Required

Value is invalid_coin_selection.
Hide attributes Show attributes

message string Required

Returned when a user-specified transaction output contains, for some asset, a token quantity that exceeds the limit supported by the protocol.

code string Required

Value is output_token_quantity_exceeds_limit.

info object

Hide info attributes Show info attributes object

address string(base58|bech32) Required

A sequence of characters that encodes (in Base58 or Bech32) a sequence of bytes which represents an address on the Cardano blockchain. Sequences in Base58 encoding are expected to be legacy Byron addresses, whereas sequences in Bech32 encoding correspond to current Shelley addresses.

For more details, see CIP-0019 — Cardano addresses .

policy_id string(hex) Required

A unique identifier of the asset's monetary policy. The policy controls how assets of this kind are created and destroyed.

The contents are the blake2b-224 hash of the monetary policy script, encoded in hexadecimal.

Minimum length is 56, maximum length is 56.

asset_name string(hex) Required

The asset on-chain type which acts as a sub-identifier within a policy. Although we call it "asset name", the value needn't be text, and it could even be empty.

For policies with a single fungible asset item, asset name is typically an empty string.

This value can be up to 32 bytes of arbitrary data (which is 64 hexadecimal digits).

Maximum length is 64.

quantity integer Required

Number of assets for the given policy_id and asset_name.

Minimum value is 0.

max_quantity integer Required

Number of assets for the given policy_id and asset_name.

Minimum value is 0.
Hide attributes Show attributes

message string Required

Returned when a user-specified transaction output contains a token bundle whose serialized length exceeds the limit supported by the protocol.

code string Required

Value is output_token_bundle_size_exceeds_limit.

info object

Hide info attributes Show info attributes object

address string(base58|bech32) Required

A sequence of characters that encodes (in Base58 or Bech32) a sequence of bytes which represents an address on the Cardano blockchain. Sequences in Base58 encoding are expected to be legacy Byron addresses, whereas sequences in Bech32 encoding correspond to current Shelley addresses.

For more details, see CIP-0019 — Cardano addresses .

bundle_size integer Required

Minimum value is 0.
200 application/json

OK
Hide response attributes Show response attributes object
- inputs array[object] Required
  
  A list of transaction inputs
  
  Hide inputs attributes Show inputs attributes object
  
  address string(base58|bech32) Required
  
  A sequence of characters that encodes (in Base58 or Bech32) a sequence of bytes which represents an address on the Cardano blockchain. Sequences in Base58 encoding are expected to be legacy Byron addresses, whereas sequences in Bech32 encoding correspond to current Shelley addresses.
  
  For more details, see CIP-0019 — Cardano addresses .
  
  amount object Required
  
  Coins, in Lovelace. Only relates to 'Ada'. Refer to assets for multi-assets wallets instead.
  
  Hide amount attributes Show amount attributes object
  
  quantity integer Required
  
  Minimum value is 0.
  
  unit string Required
  
  Value is lovelace.
  
  assets array[object]
  
  A flat list of assets (possibly empty).
  
  Hide assets attributes Show assets attributes object
  
  policy_id string(hex) Required
  
  A unique identifier of the asset's monetary policy. The policy controls how assets of this kind are created and destroyed.
  
  The contents are the blake2b-224 hash of the monetary policy script, encoded in hexadecimal.
  
  Minimum length is 56, maximum length is 56.
  
  asset_name string(hex) Required
  
  The asset on-chain type which acts as a sub-identifier within a policy. Although we call it "asset name", the value needn't be text, and it could even be empty.
  
  For policies with a single fungible asset item, asset name is typically an empty string.
  
  This value can be up to 32 bytes of arbitrary data (which is 64 hexadecimal digits).
  
  Maximum length is 64.
  
  quantity integer Required
  
  Number of assets for the given policy_id and asset_name.
  
  Minimum value is 0.
  
  id string(hex) Required
  
  A unique identifier for this transaction
  
  Minimum length is 64, maximum length is 64.
  
  derivation_path array[string] Required
  
  An individual segment within a derivation path.
  
  The H suffix indicates a Hardened child private key, which means that children of this key cannot be derived from the public key. Indices without a H suffix are called Soft.
  
  At least 1 element.
  
  index integer Required
  
  Minimum value is 0.
- outputs array[object] Required
  
  A list of target outputs with amounts specified.
  
  When creating a new transaction, the wallet software ensures that all user-specified transaction outputs have ada amounts that satisfy the ledger minimum UTxO rule:
  
  If a user-specified transaction output has an ada amount that is zero, the wallet software will automatically assign a minimal amount of ada to the output so that it satisfies the ledger minimum UTxO rule.
  
  If a user-specified transaction output has an ada amount that is non-zero, the wallet software will verify that the specified amount is large enough to satisfy the ledger minimum UTxO rule. If the amount is not large enough, the wallet software will return a utxo_too_small error, together with a revised ada amount that does satisfy the minimum UTxO rule.
  
  At least 0 elements.
  
  Hide outputs attributes Show outputs attributes object
  
  address string(base58|bech32) Required
  
  A sequence of characters that encodes (in Base58 or Bech32) a sequence of bytes which represents an address on the Cardano blockchain. Sequences in Base58 encoding are expected to be legacy Byron addresses, whereas sequences in Bech32 encoding correspond to current Shelley addresses.
  
  For more details, see CIP-0019 — Cardano addresses .
  
  amount object Required
  
  Coins, in Lovelace. Only relates to 'Ada'. Refer to assets for multi-assets wallets instead.
  
  Hide amount attributes Show amount attributes object
  
  quantity integer Required
  
  Minimum value is 0.
  
  unit string Required
  
  Value is lovelace.
  
  assets array[object]
  
  A flat list of assets (possibly empty).
  
  Hide assets attributes Show assets attributes object
  
  policy_id string(hex) Required
  
  A unique identifier of the asset's monetary policy. The policy controls how assets of this kind are created and destroyed.
  
  The contents are the blake2b-224 hash of the monetary policy script, encoded in hexadecimal.
  
  Minimum length is 56, maximum length is 56.
  
  asset_name string(hex) Required
  
  The asset on-chain type which acts as a sub-identifier within a policy. Although we call it "asset name", the value needn't be text, and it could even be empty.
  
  For policies with a single fungible asset item, asset name is typically an empty string.
  
  This value can be up to 32 bytes of arbitrary data (which is 64 hexadecimal digits).
  
  Maximum length is 64.
  
  quantity integer Required
  
  Number of assets for the given policy_id and asset_name.
  
  Minimum value is 0.
- change array[object] Required
  
  A list of transaction change outputs.
  
  At least 0 elements.
  
  Hide change attributes Show change attributes object
  
  address string(base58|bech32) Required
  
  A sequence of characters that encodes (in Base58 or Bech32) a sequence of bytes which represents an address on the Cardano blockchain. Sequences in Base58 encoding are expected to be legacy Byron addresses, whereas sequences in Bech32 encoding correspond to current Shelley addresses.
  
  For more details, see CIP-0019 — Cardano addresses .
  
  amount object Required
  
  Coins, in Lovelace. Only relates to 'Ada'. Refer to assets for multi-assets wallets instead.
  
  Hide amount attributes Show amount attributes object
  
  quantity integer Required
  
  Minimum value is 0.
  
  unit string Required
  
  Value is lovelace.
  
  assets array[object]
  
  A flat list of assets (possibly empty).
  
  Hide assets attributes Show assets attributes object
  
  policy_id string(hex) Required
  
  A unique identifier of the asset's monetary policy. The policy controls how assets of this kind are created and destroyed.
  
  The contents are the blake2b-224 hash of the monetary policy script, encoded in hexadecimal.
  
  Minimum length is 56, maximum length is 56.
  
  asset_name string(hex) Required
  
  The asset on-chain type which acts as a sub-identifier within a policy. Although we call it "asset name", the value needn't be text, and it could even be empty.
  
  For policies with a single fungible asset item, asset name is typically an empty string.
  
  This value can be up to 32 bytes of arbitrary data (which is 64 hexadecimal digits).
  
  Maximum length is 64.
  
  quantity integer Required
  
  Number of assets for the given policy_id and asset_name.
  
  Minimum value is 0.
  
  derivation_path array[string] Required
  
  An individual segment within a derivation path.
  
  The H suffix indicates a Hardened child private key, which means that children of this key cannot be derived from the public key. Indices without a H suffix are called Soft.
  
  At least 1 element.
- collateral array[object]
  
  A list of transaction inputs used for collateral
  
  Hide collateral attributes Show collateral attributes object
  
  address string(base58|bech32) Required
  
  A sequence of characters that encodes (in Base58 or Bech32) a sequence of bytes which represents an address on the Cardano blockchain. Sequences in Base58 encoding are expected to be legacy Byron addresses, whereas sequences in Bech32 encoding correspond to current Shelley addresses.
  
  For more details, see CIP-0019 — Cardano addresses .
  
  amount object Required
  
  Coins, in Lovelace. Only relates to 'Ada'. Refer to assets for multi-assets wallets instead.
  
  Hide amount attributes Show amount attributes object
  
  quantity integer Required
  
  Minimum value is 0.
  
  unit string Required
  
  Value is lovelace.
  
  id string(hex) Required
  
  A unique identifier for this transaction
  
  Minimum length is 64, maximum length is 64.
  
  derivation_path array[string] Required
  
  An individual segment within a derivation path.
  
  The H suffix indicates a Hardened child private key, which means that children of this key cannot be derived from the public key. Indices without a H suffix are called Soft.
  
  At least 1 element.
  
  index integer Required
  
  Minimum value is 0.
- withdrawals array[object]
  
  A list of withdrawals from stake addresses.
  
  At least 0 elements.
  
  Hide withdrawals attributes Show withdrawals attributes object
  
  stake_address string(bech32) Required
  
  derivation_path array[string] Required
  
  An individual segment within a derivation path.
  
  The H suffix indicates a Hardened child private key, which means that children of this key cannot be derived from the public key. Indices without a H suffix are called Soft.
  
  At least 1 element.
  
  amount object Required
  
  Coins, in Lovelace. Only relates to 'Ada'. Refer to assets for multi-assets wallets instead.
  
  Hide amount attributes Show amount attributes object
  
  quantity integer Required
  
  Minimum value is 0.
  
  unit string Required
  
  Value is lovelace.
  
  Additional properties are NOT allowed
- certificates array[object]
  
  Hide certificates attributes Show certificates attributes object
  
  certificate_type string Required
  
  Values are join_pool, quit_pool, or register_reward_account.
  
  pool string(hex|bech32)
  
  A unique identifier for the pool.
  
  reward_account_path array[string] Required
  
  At least 5 but not more than 5 elements.
- deposits_taken array[object]
  
  A list of deposits associated with a transaction.
  
  At least 0 elements.
  
  Hide deposits_taken attributes Show deposits_taken attributes object
  
  quantity integer Required
  
  Minimum value is 0.
  
  unit string Required
  
  Value is lovelace.
- deposits_returned array[object]
  
  A list of deposits associated with a transaction.
  
  At least 0 elements.
  
  Hide deposits_returned attributes Show deposits_returned attributes object
  
  quantity integer Required
  
  Minimum value is 0.
  
  unit string Required
  
  Value is lovelace.
- metadata string(base64)
  
  Transaction metadata, serialized according to the expected on-chain binary format, base64-encoded.

POST /byron-wallets/{walletId}/coin-selections/random

curl \
 --request POST https://localhost:8090/v2/byron-wallets/{walletId}/coin-selections/random \
 --header "Content-Type: application/json" \
 --data '{"payments":[{"address":"addr1sjck9mdmfyhzvjhydcjllgj9vjvl522w0573ncustrrr2rg7h9azg4cyqd36yyd48t5ut72hgld0fg2xfvz82xgwh7wal6g2xt8n996s3xvu5g","amount":{"quantity":42000000,"unit":"lovelace"},"assets":[{"policy_id":"65ab82542b0ca20391caaf66a4d4d7897d281f9c136cd3513136945b","asset_name":"string","quantity":42}]}]}'

Request examples

{
  "payments": [
    {
      "address": "addr1sjck9mdmfyhzvjhydcjllgj9vjvl522w0573ncustrrr2rg7h9azg4cyqd36yyd48t5ut72hgld0fg2xfvz82xgwh7wal6g2xt8n996s3xvu5g",
      "amount": {
        "quantity": 42000000,
        "unit": "lovelace"
      },
      "assets": [
        {
          "policy_id": "65ab82542b0ca20391caaf66a4d4d7897d281f9c136cd3513136945b",
          "asset_name": "string",
          "quantity": 42
        }
      ]
    }
  ]
}

Response examples (415)

{
  "message": "string",
  "code": "unsupported_media_type"
}

Response examples (406)

{
  "message": "string",
  "code": "not_acceptable"
}

Response examples (404)

{
  "message": "string",
  "code": "no_such_wallet",
  "info": {
    "wallet_id": "2512a00e9653fe49a44a5886202e24d77eeb998f"
  }
}

Response examples (400)

{
  "message": "string",
  "code": "bad_request"
}

Response examples (403)

{
  "message": "string",
  "code": "already_withdrawing"
}

{
  "message": "string",
  "code": "utxo_too_small",
  "info": {
    "tx_output_index": 42,
    "tx_output_lovelace_specified": {
      "quantity": 42000000,
      "unit": "lovelace"
    },
    "tx_output_lovelace_required_minimum": {
      "quantity": 42000000,
      "unit": "lovelace"
    }
  }
}

{
  "message": "string",
  "code": "no_utxos_available"
}

{
  "message": "string",
  "code": "not_enough_money",
  "info": {
    "shortfall": {
      "ada": {
        "quantity": 42000000,
        "unit": "lovelace"
      },
      "assets": [
        {
          "policy_id": "65ab82542b0ca20391caaf66a4d4d7897d281f9c136cd3513136945b",
          "asset_name": "string",
          "quantity": 42
        }
      ]
    }
  }
}

{
  "message": "string",
  "code": "insufficient_collateral"
}

{
  "message": "string",
  "code": "cannot_cover_fee"
}

{
  "message": "string",
  "code": "inputs_depleted"
}

{
  "message": "string",
  "code": "invalid_coin_selection"
}

{
  "message": "string",
  "code": "output_token_quantity_exceeds_limit",
  "info": {
    "address": "addr1sjck9mdmfyhzvjhydcjllgj9vjvl522w0573ncustrrr2rg7h9azg4cyqd36yyd48t5ut72hgld0fg2xfvz82xgwh7wal6g2xt8n996s3xvu5g",
    "policy_id": "65ab82542b0ca20391caaf66a4d4d7897d281f9c136cd3513136945b",
    "asset_name": "string",
    "quantity": 42,
    "max_quantity": 42
  }
}

{
  "message": "string",
  "code": "output_token_bundle_size_exceeds_limit",
  "info": {
    "address": "addr1sjck9mdmfyhzvjhydcjllgj9vjvl522w0573ncustrrr2rg7h9azg4cyqd36yyd48t5ut72hgld0fg2xfvz82xgwh7wal6g2xt8n996s3xvu5g",
    "bundle_size": 42
  }
}

Response examples (200)

{
  "inputs": [
    {
      "address": "addr1sjck9mdmfyhzvjhydcjllgj9vjvl522w0573ncustrrr2rg7h9azg4cyqd36yyd48t5ut72hgld0fg2xfvz82xgwh7wal6g2xt8n996s3xvu5g",
      "amount": {
        "quantity": 42000000,
        "unit": "lovelace"
      },
      "assets": [
        {
          "policy_id": "65ab82542b0ca20391caaf66a4d4d7897d281f9c136cd3513136945b",
          "asset_name": "string",
          "quantity": 42
        }
      ],
      "id": "1423856bc91c49e928f6f30f4e8d665d53eb4ab6028bd0ac971809d514c92db1",
      "derivation_path": [
        "1852H"
      ],
      "index": 42
    }
  ],
  "outputs": [
    {
      "address": "addr1sjck9mdmfyhzvjhydcjllgj9vjvl522w0573ncustrrr2rg7h9azg4cyqd36yyd48t5ut72hgld0fg2xfvz82xgwh7wal6g2xt8n996s3xvu5g",
      "amount": {
        "quantity": 42000000,
        "unit": "lovelace"
      },
      "assets": [
        {
          "policy_id": "65ab82542b0ca20391caaf66a4d4d7897d281f9c136cd3513136945b",
          "asset_name": "string",
          "quantity": 42
        }
      ]
    }
  ],
  "change": [
    {
      "address": "addr1sjck9mdmfyhzvjhydcjllgj9vjvl522w0573ncustrrr2rg7h9azg4cyqd36yyd48t5ut72hgld0fg2xfvz82xgwh7wal6g2xt8n996s3xvu5g",
      "amount": {
        "quantity": 42000000,
        "unit": "lovelace"
      },
      "assets": [
        {
          "policy_id": "65ab82542b0ca20391caaf66a4d4d7897d281f9c136cd3513136945b",
          "asset_name": "string",
          "quantity": 42
        }
      ],
      "derivation_path": [
        "1852H"
      ]
    }
  ],
  "collateral": [
    {
      "address": "addr1sjck9mdmfyhzvjhydcjllgj9vjvl522w0573ncustrrr2rg7h9azg4cyqd36yyd48t5ut72hgld0fg2xfvz82xgwh7wal6g2xt8n996s3xvu5g",
      "amount": {
        "quantity": 42000000,
        "unit": "lovelace"
      },
      "id": "1423856bc91c49e928f6f30f4e8d665d53eb4ab6028bd0ac971809d514c92db1",
      "derivation_path": [
        "1852H"
      ],
      "index": 42
    }
  ],
  "withdrawals": [
    {
      "stake_address": "stake1sjck9mdmfyhzvjhydcjllgj9vjvl522w0573ncustrrr2rg7h9azg4cyqd36yyd48t5ut72hgld0fg2x",
      "derivation_path": [
        "1852H"
      ],
      "amount": {
        "quantity": 42000000,
        "unit": "lovelace"
      }
    }
  ],
  "certificates": [
    {
      "certificate_type": "join_pool",
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}