Btc Blake2b Wallet v0.3.0

Btc Blake2b Wallet v0.3.0

Self-custodial wallet for the bitcoin-blake2b network. 100% local: no author
server, no analytics, no account.

• Site: https://btcblake2b.org
• Verify: SHA-256 in the attached .sha256 file (compare with the site)
• Upgrade: installs over v0.2.x with the same keystore, no data loss
• MIT · experimental minority network — use only funds you can afford to lose

What's new

Lightning without your own node (experimental)
Pay a Lightning invoice without connecting a node: an atomic swap with a
provider where the funds stay in your on-chain wallet (HTLC, refund path always
available). Testing phase — please report anything odd.

Batch send
Pay up to 20 recipients in a single transaction: one fee instead of one per
transfer. Per-row validation (dust, duplicates) and a confirmation screen
listing every recipient. RBF fee bump covers the whole batch.

Addresses and UTXOs
Per-address on-chain state (never used / used and spent / holds funds), derivation
path and balance for each receive and change address, plus a UTXO tab.

Faster start
Lazy block-wise address derivation: the home screen went from ~5.9 s to 1–2 s on
a real device, with 20–40 addresses derived instead of 200.

Private notes per transaction
Annotate any transaction; notes stay on your device, appear in the history and
are included in exports.

History export
Export the full history as CSV or JSON (copied to the clipboard; a file download
in the web build), including your notes.

Clearer node diagnostics
The app recognizes the node release and explains the peering gate when no peer
can connect, instead of leaving you with a silent empty list. External links now
open correctly on Android. Lightning error messages are translated.

Under the hood

• 965 tests, flutter analyze clean
• Security review follow-ups closed (challenge-response, release fail-closed,
  screen protection, address reuse, fee estimation)
• Groundwork for PSBT (create / sign / finalise) — not user-visible yet

Checksums

SHA256(btc-blake2b-wallet-v0.3.0.apk) = 9B4C5B7CFD50834C6F67B83272E59AF952F3D041BD9795E8DA9DFCFB4A23A061