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Anyone who skipped backup verification (or just wants to re-check) can now
reveal the seed words and passphrase from a header "Backup" button that opens
a warning-gated modal with copy actions.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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The Tools page held a now-redundant manual offline toggle (we auto-detect),
a small wallet-info blurb, and the offline snapshot import/export. Drop the
page and relocate snapshot import/export to the Coins tab. Offline fallback
and goHome now land on Coins; the offline banner points there.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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- Remove the unlock-screen "Offline mode" checkbox and network selector.
Always mainnet. Attempt a scan on open; if navigator is offline or the
scan fails (network unreachable), fall back to offline automatically with
a banner + Retry instead of an upfront toggle.
- Drop the manual balance "Refresh" and receive "Check for payments"
buttons; the WebSocket keeps things current.
- Update balances silently: add a wallet.loaded flag so the balance only
dims on the very first load and history/coins only show a spinner before
the first load. Background WS-driven rescans no longer flash spinners.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Since the wallet only ever exposes one unused receive address at a time,
used addresses stay contiguous (gap never exceeds 1), so a gap limit of 5 is
a safe margin and cuts a scan from ~40 to ~10 requests.
Also reword the receive note: the address advances automatically (via the
realtime WebSocket) when paid, so drop the confusing "scan again".
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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The "CORS" errors were 429 Too Many Requests (a 429 has no CORS headers, so
the browser reports it as a CORS failure). SSL/hosting is irrelevant.
Per-request retries made it worse by multiplying load on an already
rate-limited host. Replace with:
- round-robin across two Esplora-compatible backends (mempool.space +
Blockstream), halving per-host load
- park a host on an 8s cooldown when it 429s instead of retrying it
- keep the global throttle (2 concurrent, 200ms gap)
- map Blockstream's /fee-estimates to the named fee tiers
Unit-tested rotation/cooldown; live scan of 40 addresses now completes in
~8s with no failures.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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The "CORS" errors during scan were actually mempool.space rate-limiting:
bursting ~40 address lookups gets some throttled, and throttled responses
lack the access-control-allow-origin header, which the browser reports as a
CORS failure.
- api.js: route all requests through a global throttle (max 2 concurrent,
250ms min gap between starts, ~4 req/s) with exponential backoff retry so
occasional throttles recover instead of failing. Unit-tested spacing +
retry recovery.
- Import pane: drop the "(12 or 24 words)" parenthetical (we generate 12),
and replace the scrunched ellipsis placeholder with an enumerated
word1..word12.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Replace the SvelteKit/daisyUI prototype with a vanilla JS + hand-rolled CSS
app that Bun bundles (code + scure/noble crypto + QR + CSS) into one
self-contained dist/index.html runnable offline from file://.
Wallet core (src/wallet.js):
- BIP84 native-segwit HD wallet from BIP39 seed (+optional passphrase)
- gap-limit scan of receive/change chains, aggregate balance, tx history
- fresh receive/change addresses; signs with witnessUtxo only (enables
offline signing with no prev-tx fetch)
- coin selection + fee estimation via btc-signer selectUTXO; send-max;
manual coin control
- offline JSON snapshot export/import (keyless) + signed-tx hex/QR export
- realtime mempool.space WebSocket: track-addresses -> debounced auto
refresh of balances/history (no polling); live status badge
UI (src/app.js): clean light paper-wallet; create (with optional, skippable
backup verification) / import flow; receive (QR) / send / history / coins /
tools tabs; clickable logo returns home.
API (src/api.js): mempool.space wrapper with retry/backoff for scan-burst
rate limiting; single network choke-point for offline enforcement.
Verified: BIP84 spec vectors, build/sign/parse for auto/max/manual flows,
snapshot roundtrip, live scan + WebSocket, headless-Chrome UI smoke tests.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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