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Bitcoin Optech Newsletter #428
This week’s newsletter describes a design for a single-issuer layer 2 whose users can redeem their bitcoin onchain without the issuer’s cooperation and summarizes a proposal for including hash preimages in output script descriptors.
Key points
- Bitcoin Optech Newsletter #428 covers Adam Gibson's Lichen design for a single-issuer layer 2 and a proposal for hash preimages in output script descriptors.
- In Lichen, users hold 2-of-2 contracts with a hub and can redeem bitcoin onchain without hub cooperation using Groth16 proofs and presigned BitVMX dispute transactions.
- João Dias proposed extending BIP379 so miniscript descriptors can carry preimages known at creation, raising open questions on syntax, RPCs and hardware signer support.
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Dextape context
Built from Dextape’s own wire, stories and glossary.
Terms in this story
- Layer 2
- A network built on top of a layer 1 that processes transactions more cheaply and posts the results back to the base chain for security.
Mentioned in this story
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