XBT guide ยท updated 2026-11-15
XBT guide sources
Quick version
- Every fact in this guide comes from these pages, checked November 15, 2026.
- If something looks out of date, trust the current source.
- Test with small amounts.
Every fact in this guide comes from the pages below, checked on November 15, 2026. These projects move fast. If something here looks out of date, trust the current source and test with small amounts.
xbt.live
- XBT (BTCB2) FAQ: what XBT is, tickers, halving, coinbase lock
- How to claim your XBT and sell it for bitcoin (safely) (2026-10-08): golden rule, Bitcoin-only input method, selling tips
- XBT cold storage guide (updated 2026-10-08): SIGHASH_UNIFIED details, SeedSigner build, pre-fork split order
- XBT wallets (last checked by xbt.live November 11, 2026)
- Where to buy XBT (updated 2026-09-27): tickers, risks
- XBT history (updated 2026-10-05): split timeline, BLAKE2b switch at block 961,640
Software projects (GitHub)
- Bitcoin Knots
- Shrike (“Sparrow fork adding unified opt-in sighash support”) and its releases
- Sparrow BLAKE2b build (paulscode)
- SeedSigner OS with unified sighash (privkeyio): “Unofficial, not audited”
Added November 15, 2026 (Start here, Set up Shrike, consolidation)
- mempool.guide (XBT block explorer) and mempool.space (BTC): block 961,631 has the same hash on both; block 961,632 differs. Fee estimates on mempool.guide.
- Shrike README and v2.5.6-blake2b.1 release notes: verification commands, signing key fingerprint, install warnings, server and replay-protection details
- Sparrow Quick Start: wallet-creation and receive screen names, public-server privacy warning
- Sparrow: Spending privately and Bitcoin wiki: Privacy: UTXOs, consolidation and the common-input-ownership heuristic
- privkeyio/seedsigner-os: “Unofficial, not audited”
- Coinbase: verify your identity, Kraken: verification requirements, Kraken: verification explained
- BitcoinBIP110.org PSAs: BLAKE2b activation, NeoxEX warning, claim-site warnings
Added November 15, 2026 (hardware wallets and self-custody)
- xbt.live wallets (last checked by xbt.live Nov 11, 2026), xbt.live tools and Paperclip Krux write-up (Nov 3, 2026)
- connorslab/krux-blake2b (Paperclip Krux firmware, v26.09.0-xbt.2 prerelease) and Paperclip Shop (sold out on Nov 15)
- privkeyio/seedsigner and releases (v0.8.7-unified-sighash.6)
- privkeyio/cc-firmware (unofficial Coldcard fork, v5.6.3U / 1.5.3QU, includes Coinkite’s entropy advisory)
- privkeyio/trezor-firmware (unofficial Trezor fork) and privkeyio/lark (Shrike’s hardware-wallet library)
- Lazarus Key (unofficial Bitkey app fork) and its source
- awesome-bitcoin-blake: Hardware signers
- Vendor release notes with no XBT support as of Nov 15, 2026: Ledger Bitcoin app (2.6.0), BitBox02 (v9.27.1), Jade (1.0.41), Keystone 3 (3.2.2), Passport (v2.3.11), Krux (26.09.0)
- Ledger Academy: BIP-110 and Lookonchain report of Ledger’s Aug 9, 2026 alert
Added November 15, 2026 (quality pass: nodes, splitting)
- Shrike docs: quick start (node first; Settings → Server; mark your signers) and connecting a node or Electrum server (Knots v29.4.1.knots20260508 or later; no public servers; BLAKE2b Fulcrum and electrs builds)
- Bitcoin Knots releases (v29.5.knots20260508, November 6, 2026) and the xbt.live FAQ (coinbase lock enforced by Knots 29.4.3 and newer)
- Bitcoin University videos: Running Bitcoin On Blake2B (Start9, Umbrel) (linked from Shrike’s docs) and Protecting Yourself From Bitcoin Replay Attacks (linked from BitcoinBIP110.org)
- BitcoinBIP110.org user guide: coin separation with an OP_RETURN over 83 bytes; “no hardware wallets that currently support Bitcoin BIP110”
- BIP-110: OP_RETURN outputs up to 83 bytes; temporary, one-year deployment
- NonKYC asset status: XBT withdrawal fee 0.0039 BTCB2, withdrawals on with the note “resync”
Independence
This guide has no affiliate or referral links. Links to exchanges and wallets are for information, not endorsement.
← FAQ & glossary Back to Start here
Not financial or tax advice. This guide is education only. Splitting, selling or trading fork coins may be a taxable event where you live; talk to a tax professional. The XBT wallets and firmware mentioned are new, community-built and unaudited. Test with small amounts; you are responsible for your own keys. We never ask for seeds, keys or money. See sources.