Key Takeaways
- StarkWare published a mined QSB transaction on Bitcoin mainnet.
- QSB currently requires GPU work and direct miner submission.
- The SHRINCS draft has no BIP number and its security proof is incomplete.
- Bitcoin holders have no action to take today.
One transaction method and one signature proposal
| Purpose | Specialized hash-protected Bitcoin output | Candidate hash-based signature scheme |
| Published evidence | Mined Bitcoin mainnet transaction | Draft specification and earlier Liquid demonstration |
| Deployment route | Current consensus rules and miner-direct submission | New verification mechanism through a soft fork |
| User access | Custom research tooling | Research stage |


English (US)