Payment batching
Also covering Batching
Payment batching is the technique of including multiple payments in the same onchain transaction. This splits the cost of creating a transaction, spending inputs, and creating a change output across all the payments in the transaction, reducing the average cost per payment.
It’s realistically possible to save 75% on transaction fees by batching just a small number of payments and with no degradation in confirmation speed or other changes required. Even using exactly the same inputs you’d use without batching, it’s possible to save more than 20%.
Primary code and documentation
Optech newsletter and website mentions
2024
2023
2021
2020
- BOLTs #803 adds recommendations for securely using batches to settle HTLCs
- Sparrow wallet adds support for payment batching
- Bitcoin Core #16378 adds a new RPC to the wallet with batching support
- C-Lightning #3812 adds batching support to its onchain wallet
- C-Lightning #3763 adds new RPC to batch open channels
- Specter Desktop adds payment batching support
- Field Report: How batching could have saved millions of dollars in fees
- Withdrawal transactions from Coinbase now use payment batching
- OP_CHECKTEMPLATEVERIFY discussion about compressed payment batching
- Non-equal value coinjoins could look like batching for improved privacy
2019
- Proposed new opcode to make batching more efficient during fee spikes
- Presentation: A Return to Fees, covering techniques including batching
2018
See also
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