Unstake transaction history

[nishitCrowe]

I am querying for staking transactions against this account 0x86f3734ed8b3ea7d5b9615dd19caf314aada227777423f2ffaf42abf726532dc. and I found very first transaction as UnStake transaction. Can you please enlighten me that without doing single staking transaction before this Unstake transaction, how this Unstake possible?

Does Split transaction play role in this scenario ? If yes then how can we get to know that what was the respective Staking transaction against this Unstake.

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[1-4200]

Yes, the Split transaction is the key here.

Another account used staking_pool::split to divide its own StakedSui (which is required for Unstake) and transferred a portion to this account. As a result, even though this account has no prior Stake transaction, it can still execute an Unstake.
https://github.com/MystenLabs/sui/blob/mainnet/crates/sui-framework/packages/sui-system/sources/staking_pool.move#L504

[nishitCrowe]

Hi @1-4200 , thanks for quick reply.
Then how would we trace the respective staking transaction against this unstake transaction. Can you help me out to find a link or there is any property which builds a connection?
I am using Json RPC API to query transaction blocks.

[1-4200]

I would track it by tracing the previousTransaction of the StakedSui.
Specifically, I’d use sui_tryGetPastObject to obtain the previousTransaction of the StakedSui used for Unstake, then call sui_getTransactionBlock with its digest to examine the transaction details. Repeating this process until reaching the original Stake transaction seems like a reliable approach.

That said since this involves tracking historical object states, an unpruned fullnode would likely be required.