Yes, Bitcoin transaction hashes or IDs can serve as receipts for transactions. When a Bitcoin transaction is created, it is assigned a unique transaction ID that is generated using a cryptographic hash function. This ID serves as a unique identifier for the transaction and can be used to look up transaction details on the Bitcoin blockchain.

When you send or receive Bitcoin, the transaction ID serves as a receipt of sorts, showing that a particular transaction has been completed and providing proof that you own a certain amount of Bitcoin. While Bitcoin transactions are not typically associated with physical receipts like you might receive when making a purchase at a store, the transaction ID does serve as a record of the transaction that can be used to prove ownership or verify that a particular transfer occurred.

Overall, transaction hashes or IDs are an integral part of the Bitcoin ecosystem, serving as a critical component of the distributed, decentralized network that powers Bitcoin transactions.