Skip to content
SATWEI

Bitcoin Core 0.13.1 Released with Segregated Witness

Original on bitcoincore.org

Source
Bitcoin Corebitcoincore.org
Originally published
Original length
13 min read
Language
English

SATWEI summary

Miners get code to signal for the segwit soft fork in Bitcoin Core 0.13.1, with signalling open from 15 November 2016 at the start of the next retarget period. Lock-in takes 95% of blocks in a 2,016-block period, and activation comes one period later. Wallets stay compatible, so nobody but miners may need to act.

Tags

  • SegWit
  • Soft fork
  • Wallet

More from Bitcoin Core

Network2 min read

Slow unbounded memory growth on paused pre-BIP31 peers

By pretending not to support BIP 31 pings, a malicious peer could dodge the 20-minute disconnect and read slowly, swelling a node's send queue by up to 2MB per hour for each inbound peer and 5MB for each outbound one. CVE-2026-117349, rated Medium, is fixed by #36667 in Bitcoin Core 32.1, 31.2, 30.4 and 29.5; -blocksonly nodes were much less exposed.

Bitcoin Core

Development1 min read

Bitcoin Core 30.4 released

Bitcoin Core 30.4 stops treating BIP 9 bits 5 to 28 as soft fork signals, following BIP 323, so blocks that set them no longer trigger unknown-deployment warnings (#34779). Network changes include a timeout enforced on paused send peers (#36667), and flatfile positions now use 64-bit integers (#36669).

Bitcoin Core

Development2 min read

Unbounded memory growth through TCP urgent data on non-Linux systems

Windows, macOS and BSD nodes could be crashed by a connected peer sending TCP urgent data, which slipped past paused reads in the select() backend and queued memory without limit (CVE-2026-117350). Linux nodes use poll() and are not affected. Bitcoin Core 32.1, 31.2, 30.4 and 29.5 fix the Medium-severity bug, which an LLM scan under Project Loupe found.

Bitcoin Core