This Week in Bitcoin Development (Oct, Week 4) \ stacker news ~bitcoin

Bitcoin Dev, Weekly Digest (Oct 27 – Nov 3, 2025)

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Stay up to date on the latest in Bitcoin Dev, Lightning Dev, and DelvingBitcoin discussions — weekly briefings for Bitcoin builders, educators, and contributors.

🧾 Summary of Threads Started This Week

The segOP proposal by Defenwycke introduces a dedicated, full-fee data lane for structured on-chain data storage, similar to SegWit but focused on data rather than signatures, via OP_SUCCESS184 and TLV encoding — designed as a soft fork (source).

Juan Alemán recommends separating consensus rules from policy code in Bitcoin Core to decentralize influence and avoid repo-level policy friction — sparked by changes included in v30 (source).

Jakob Widmann proposes Anticipation Transactions (ATX), a miner-validated transaction forwarding scheme intended to scale Bitcoin without Lightning Network complexity — includes timelocks and miner incentive changes (source).

Bitcoin Core v31.0 celebrates 10 years of libsecp256k1, now significantly outperforming OpenSSL for ECDSA on secp256k1. Continuous optimizations demonstrate the value of specialized cryptography libraries in Bitcoin (source).

🧵 New Threads This Week

segOP potential BIP discussion — defenwycke
- Full-fee, structured data in Bitcoin via soft-forked "segOP" path.
- Summary link
[Pre-BIP] Bitcoin Node Repository Consensus-Policy Separation — Juan Alemán
- Repo split proposed to isolate consensus from policy and avoid forks.
- Summary link
[Concept] Anticipation Pool — Jakob Widmann
- Miner-approved pre-confirmed TXs to reduce chain load.
- Summary link
[BIP] Soft Fork Compromise on op_return — Majorian
- Cap op_return usage to resolve post-Core-30 tensions.
- Summary link
OP_CIV — Post-Quantum Signature Aggregation — Tadge Dryja
- Post-quantum signature aggregation to reduce chain bloat.
- Summary link
Comparing OpenSSL vs libsecp256k1 ECDSA validation speeds — theStack
- 10-year milestone of libsecp256k1 confirms its dominance.
- Summary link
Public Disclosure: HTLC-based DoS in Cashu — 1440000bytes
- Vulnerability fixed via preimage validation in nutshell v0.18.0.
- Summary link

🔥 Active Discussions

[BIP] Limit ScriptPubkey Size ≥ 520 Bytes — Michael Tidwell
- Debates on scalability, UTXO bloat, and reindex feasibility.
- Summary link
Embedding data into Schnorr — Tim Ruffing
- Is data embedding compatible with security proofs in prime-order groups?
[BIP] Reduced Data Temporary Softfork — Jal Toorey
- Temporary compromise to reduce block data rates.
Stats on compact block reconstructions — 0xB10C
- Block relay efficiency with updated minrelayfee policies.
Bitcoin Embracing MimbleWimble — REDBaron
- Grin's data-less design and its fungibility benefits.

📚 Full summaries and sources:
👉 tldr.bitcoinsearch.xyz