How can I determine the specific staking transaction associated with this unstaking transaction?

[nishitCrowe]

While checking the response of query_transaction_block json RPC API, I got below response in an unstake transaction-

"events": [
{
"id": {
"txDigest": "DZaDtRkjVzZqSuiF5bddT8AxTVcPDKe8WLz7TMemkgaU",
"eventSeq": "0"
},
"packageId": "0x0000000000000000000000000000000000000000000000000000000000000003",
"transactionModule": "sui_system",
"sender": "0xcd57cb92c4380df9284d730bc7fa8810ddb784045b91299c3ae59556ed38374c",
"type": "0x3::validator::UnstakingRequestEvent",
"parsedJson": {
"pool_id": "0xf1861222d449dd268a71e84bedc8d517196862aa563091487d9ab54c42aef6e6",
"principal_amount": "5000000000000000",
"reward_amount": "22116891598947",
"stake_activation_epoch": "594",
"staker_address": "0xcd57cb92c4380df9284d730bc7fa8810ddb784045b91299c3ae59556ed38374c",
"unstaking_epoch": "658",
"validator_address": "0x92c7bf9914897e8878e559c19a6cffd22e6a569a6dd4d26f8e82e0f2ad1873d6"
},
"bcsEncoding": "base64",
"bcs": "8YYSItRJ3SaKcehL7cjVFxloYqpWMJFIfZq1TEKu9uaSx7+ZFIl+iHjlWcGabP/SLmpWmm3U0m+OguDyrRhz1s1Xy5LEOA35KE1zC8f6iBDdt4QEW5EpnDrllVbtODdMUgIAAAAAAACSAgAAAAAAAACA4Dd5wxEAY6B3fR0UAAA="
}
],

Here we get stake_activated_epoch which says that in this epoch, the stake was happened. but how to identify against which specific transaction under that epoch, the staking transaction is related to.

[github-actions]

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[stefan-mysten]

You probably need to make a query on events and set a filter to sender, and then check for an event where staking is called. Or find all the transaction blocks made by this address, and then go one by one to find the one that did the staking.

[nishitCrowe]

Actually I find a transaction where couple of staking transaction took place in same epoch, same amount, same validator and same staking pool. and then same with unstake transaction, found couple of unstake transaction in same epoch. so how to identify which staking txn is related to which unstaking txn.