v1

latestOpenAPI 3.0.0MIT2026-07-17124105392.5 KB

Cardano » Transactions

Transaction stake pool registration and update certificates

Obtain information about stake pool registration and update certificates of a specific transaction.

get/txs/{hash}/pool_updates

Path parameters

hashstring 64-character case-sensitive hexadecimal string required

Hash of the requested transaction

Response

Obtain information about stake pool certificates of a specific transaction

cert_indexinteger required

Index of the certificate within the transaction

pool_idstring required

Bech32 encoded pool ID

vrf_keystring required

VRF key hash

pledgestring required

Stake pool certificate pledge in Lovelaces

margin_costnumber required

Margin tax cost of the stake pool

fixed_coststring required

Fixed tax cost of the stake pool in Lovelaces

reward_accountstring required

Bech32 reward account of the stake pool

ownersstring[] required

active_epochinteger required

Epoch in which the update becomes active

Example response

[
  {
    "pool_id": "pool1pu5jlj4q9w9jlxeu370a3c9myx47md5j5m2str0naunn2q3lkdy",
    "vrf_key": "0b5245f9934ec2151116fb8ec00f35fd00e0aa3b075c4ed12cce440f999d8233",
    "pledge": "5000000000",
    "margin_cost": 0.05,
    "fixed_cost": "340000000",
    "reward_account": "stake1uxkptsa4lkr55jleztw43t37vgdn88l6ghclfwuxld2eykgpgvg3f",
    "owners": [
      "stake1u98nnlkvkk23vtvf9273uq7cph5ww6u2yq2389psuqet90sv4xv9v"
    ],
    "metadata": {
      "url": "https://stakenuts.com/mainnet.json",
      "hash": "47c0c68cb57f4a5b4a87bad896fc274678e7aea98e200fa14a1cb40c0cab1d8c",
      "ticker": "NUTS",
      "name": "Stake Nuts",
      "description": "The best pool ever",
      "homepage": "https://stakentus.com/"
    },
    "relays": [
      {
        "ipv4": "4.4.4.4",
        "ipv6": "https://stakenuts.com/mainnet.json",
        "dns": "relay1.stakenuts.com",
        "dns_srv": "_relays._tcp.relays.stakenuts.com",
        "port": 3001
      }
    ],
    "active_epoch": 210
  }
]