| Commit message (Collapse) | Author | Age | Files | Lines |
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- Dark mode: theme variables + a footer "Dark mode/Light mode" toggle,
persisted and applied pre-paint via a small head script (defaults to the
OS preference). Hardcoded surfaces moved to CSS variables.
- Gift amount: the unit label is now the clickable sats/BTC toggle, and the
amount is parsed in the selected unit.
- Gifts can now span multiple coins: createGift selects several confirmed
coins (first input SIGHASH_SINGLE to lock the change, the rest
SIGHASH_NONE), so a gift larger than any single coin works. Claim/preview
sum all inputs and size the fee by input count. Verified end-to-end.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Home screen is back to two tabs (Create / Import). The Import box now
takes a recovery phrase, an xpub/zpub, or an xprv/zprv:
- mnemonic → full wallet (as before)
- xpub/zpub → watch-only (view/receive, no Send)
- xprv/zprv → full spending wallet with no mnemonic. parseExtendedKey
classifies + normalizes version bytes; account() derives the BIP84
path from a master xprv (depth 0) or uses an account-level xprv as-is;
signing works (only watch-only blocks it). Vault persists xprv accounts
too; Settings shows an "Imported key" note instead of a recovery card
and hides Nostr sync (no seed). Public-key export still works.
Note: a seed phrase cannot be derived from an xprv (one-way KDF), so an
xprv wallet has no recovery words by design. New strings in all 19 locales.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Two paths left a tx's confirmed flag stale once the balance had already
reconciled:
- The frontier poll re-fetched an address's txs but only appended new
ones (`if (!txs.some(...))`), so a tx that moved from mempool to a
block kept its old pending status. Now it refreshes the record in place.
- On reload, scan() skipped the history re-pull when the cached balance
already matched on-chain, so a stale-pending cached tx never updated.
scan() now also re-pulls history whenever any tx is still pending.
Verified: a cached pending tx that is confirmed on-chain flips to
confirmed (and pending balance clears) after a scan.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Per-account "Save on this device" encrypts a seed account into a
localStorage vault (scrypt KDF + XChaCha20-Poly1305 via @noble), so it
survives a browser close. On reopen, a vault prompt unlocks all saved
wallets with the password (or "Use another wallet" to skip). Default
stays session-only; the password is held only in memory for the session
and re-encrypts on save/forget. Wrong password fails closed (AEAD).
Adds @noble/ciphers dependency. New strings translated across all 19
locales.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Accounts: a switcher (header chip → Accounts screen) lets you keep
several wallets loaded and flip between them without re-importing. Per
the chosen model, full (seed) accounts live only in sessionStorage —
ephemeral, no seed on disk; watch-only accounts (no seed) are persisted
in localStorage and reload across restarts. enterWallet is refactored
around an accounts list (add/switch/remove/lock); Add wallet reaches the
unlock screen with a back button.
Watch-only: load any wallet from its account xpub/zpub (parseAccountKey
normalizes zpub→xpub; the existing public-derivation path yields the
same addresses). Signing is blocked, the Send tab and seed/sync/offline
cards are hidden, and a watch-only note is shown. Settings gains a
"Public key" card (export this wallet's zpub) so it can be watched
read-only elsewhere.
Password-encrypted persistence for full accounts is the planned next
step. New strings translated across all 19 locales.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Minimum: the flat 546-sat floor is replaced by a fee-aware minimum
(dust + one claim fee of headroom, floored at 546) via giftMinimum(),
so the recipient clears dust comfortably even if fees rise before they
claim — e.g. ~1000 sats at 5 sat/vB, ~7300 at 50. The create form shows
the live minimum and rejects below it; buildClaimTx keeps the hard
294-sat dust guard as a final backstop (claim fails rather than handing
over dust).
UI: the gift entrypoint moves from Settings to a "Gift some Bitcoin"
link on the Send page, opening the gift view as a send sub-view with a
back button.
New strings translated across all 19 locales.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Passive reclaim previously dropped the coin from tracking, so there was
no way to revoke afterward. Now reclaim moves the coin from "reserved"
to a "reclaimed" set: it becomes spendable, but its still-live link
stays listed (tagged "still claimable") with a Revoke option, until the
coin is actually spent (by a payment or by revoking), at which point it
drops off. revokeGift and outstandingGifts handle both sets; existing
reserved gifts are unaffected. Strings updated across all 19 locales.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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The old "Reclaim" only un-reserved the coin locally, so the gift link
stayed claimable. Replace it with "Revoke": a confirmed action that
sweeps the reserved coin back into the sender's own wallet at a high
fee (wallet.revokeGift), double-spending the gift's presigned input so
the link can't be claimed once it confirms. Races a simultaneous
claimer; if the gift was already claimed the broadcast just fails.
New strings translated across all 19 locales.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Gifting no longer shares a seed. "Gift some Bitcoin" (Settings) presigns
a chosen amount as a #gift= link: one SIGHASH_SINGLE input (the sender's
change output is cryptographically fixed, so a front-runner can only take
the gift portion, never the change) plus the rest left open. The coin is
reserved per-wallet so normal sends skip it; reclaim it anytime.
Opening the link generates a brand-new wallet the sender never sees,
shows the amount, and on Claim adds the claimer's address as the output,
finalizes, and broadcasts — then prompts backup of the fresh seed. This
gives forward secrecy (sender locked out once confirmed), one-shot
semantics (claiming spends the input), and keeps funds in the sender's
wallet until claimed.
Crypto verified end-to-end (sign NONE/SINGLE -> add output -> finalize ->
valid tx; deterministic-signature equality proves the presigned sig is
valid for any output the claimer picks). Strings retranslated across all
19 locales.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Create a #claim=<code> link from Settings → "Gift this wallet" (gated
behind a reveal + warning, with a QR): the seed (and passphrase, if any)
are encoded as BIP39 entropy in base64url in the URL fragment, which
never reaches a server. Opening such a link loads that wallet and shows
a welcome → balance → firm "back up your recovery phrase" flow, then
drops into the wallet. The claim code is scrubbed from the address bar
on load.
Bearer by design — whoever opens the link controls the funds — so the
creator UI warns to keep amounts small. New strings translated into all
19 locales.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Bump now opens its own screen with the Economy/Normal/Priority/Custom
fee tiers (defaults to Priority) and a live "fee: old → new" preview as
you change the rate, then Replace builds + signs + broadcasts. Refactor
bumpTx into prepareBump (async fetch/reconstruct) + planBump (pure
preview) + buildBump (sign), so the picker can preview each rate without
rebuilding. New bumpInsufficient string translated into all 19 locales.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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- Signal opt-in RBF (BIP125, sequence 0xfffffffd) on all new sends so
they're replaceable.
- "Bump fee" on an unconfirmed sent tx (its detail view): rebuilds the
same inputs + recipient outputs at the Priority rate, taking the extra
fee from the change output (pulling in a confirmed coin if change can't
cover it), re-signs, and routes to a "Replace with a higher fee?"
confirmation showing old → new fee before broadcasting.
- New keys translated into all 19 locales.
Honest scope: P2A/TRUC/package-relay are L2/pre-signed-tx + node-relay
features that don't apply to a single-sig wallet broadcasting single txs
via public explorers, so they're intentionally out. CPFP (for receives /
unbumpable sends) is a possible follow-up.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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- Settings → Block explorer: pick mempool.space (default, with
blockstream.info as a silent failover), blockstream.info only, or a
custom Esplora/electrs REST URL (e.g. your own node). The realtime
WebSocket only applies to mempool.space; other explorers fall back to
polling. Switching rebuilds the API and rescans. Replaces the old
undocumented explorer-proxy hack.
- How it works: merge the "For the technically curious" disclosure into
the main body so it's all visible under "The basics", and dedupe the
overlapping no-server/offline sentences. Mentions the new explorer
setting.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Device sync:
- Add a "Device sync" settings card: toggle (on by default) + editable
relay list (defaults to wss://relay.coinos.io). When off, the wallet
never contacts a relay. nostr.js is now multi-relay and reads an
enabled/relays preference from localStorage.
Reconciliation (fixes a stray "payment received" + stale history on
import, especially via the Nostr/cache load path):
- Always full-scan on load instead of a frontier-only refreshLive, so
balance, history confirmations and spends are reconciled and the
celebration baselines against everything that already exists (cache/
Nostr still shows instantly first).
- Actually start the periodic full-scan safety net (_deepTimer, 2 min);
it was declared but never wired up.
- WS pushes now refresh an existing tx's pending→confirmed status, not
only add new transactions.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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refreshLive only walked the frontier forward, so a coin spent from an
already-scanned address never reconciled — the balance stayed stale
until a full rescan, even after the spend confirmed (e.g. a tx
broadcast from another device). Add _reconcileHeld: re-verify every
address that currently holds a UTXO and rebuild its balance/UTXOs from
the explorer, catching spends whether pending or confirmed. Runs in the
refreshLive path (load, poll, WS), so a refresh now self-corrects.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Scan a Bitcoin address, a BIP21 URI (fills address + amount), or a
signed-transaction QR (opens a broadcast confirmation, then relays it)
from a viewfinder button on the Send form.
Decoder strategy keeps the main bundle small:
- Prefer the native BarcodeDetector (Chrome desktop/Android) — no lib.
- Otherwise lazy-load jsQR from a separate dist/jsqr.js, only when the
scanner is opened. jsQR stays out of index.html (~424 KB vs ~551 KB)
and off the initial load.
- The service worker precaches jsqr.js so offline scanning works for
installed PWAs on browsers without BarcodeDetector.
The scanner needs a camera + secure context, so it never shows on a
standalone file:// page; offline air-gapped signing is unaffected.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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UI / copy:
- Footer: "made by Adam Soltys" (drop the heart) + a "How it works"
link on its own line, matching the footer's size.
- New "How it works" page: plain-language basics plus an expandable
"for the technically curious" section. Routed via ui.screen, with
Back/logo returning to wherever you opened it from.
- Scrub jargon from the main UI for newcomers: drop BIP39, soften
"raw hex" -> "code", "txid" -> "transaction ID", "air-gapped" ->
"offline"; replace em dashes in the intro/keys notes. The technical
terms now live only in the How it works technical section.
Import / scan performance (fewer requests -> fewer 429s, faster):
- Skip the /utxo fetch for fully-settled, zero-balance addresses
(they can't hold UTXOs) -- the bulk of a history-heavy wallet.
- Show balance as soon as the address scan finishes, then load UTXOs
and history in the background.
- Probe the receive and change chains concurrently so their per-hit
delays overlap.
- History fills in progressively as each address resolves, with a
loading indicator on the History tab.
i18n.js is now tracked; new English keys fall back to English for the
other languages until translated.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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WS-detected deposits now get added to history (previously the ingest advanced
past the address so the tx never entered history — balance showed but History
was empty). Pending txs render with a "⏳ pending" badge, an orange-tinted row,
and "awaiting confirmation" so they're clearly distinct from confirmed ones.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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- The "Payment received!" celebration now persists: the acknowledged fresh
index is stored (per seed) in localStorage, so a received payment keeps
showing the dialog until you tap past it, even after a refresh.
- Footer: only "GitHub" is the link now.
- README rewritten for the current state (mainnet-only, realtime, Nostr sync,
multi-recipient, sats default, explorer resilience, etc.).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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The pending balance showed immediately from the WS ingest, but the next
receive address/QR only appeared after the debounced refreshLive. Now the WS
ingest marks the receiving address used and advances the fresh index right
away, so the new address shows in the same update as the balance.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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refreshLive escalated to a full scan() when the fresh address changed, which
re-queried every coin's /utxo and /txs. Rewrite it to walk the frontier
incrementally: advance through newly-used addresses, fetching /utxo + /txs for
only those, and never revisit already-scanned coin addresses. WS events use
the same path. A new deposit now costs ~5 requests instead of a full re-scan.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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mempool's track-addresses caps at 10 per connection; we were sending all coin
addresses + a 15-wide frontier, so the subscription was rejected and realtime
updates silently stopped. With the frontier model (coins handled by post-send
refresh + Nostr sync), only the next receive and change address need watching
— so track exactly those two.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Persist wallet state (addresses, utxos, history, indices, fees) as a NIP-44
encrypted, parameterized-replaceable event (kind 30078) addressed to self on
relay.coinos.io. The Nostr identity is derived from the same seed (NIP-06), so
no extra secret. On load we pull the latest state from Nostr — a device with
no local cache gets full state without re-scanning, and another device's
updates propagate — using savedAt to keep the newest copy. localStorage stays
as the instant/offline cache; state is published (debounced) on every change.
(Relay note: added kind 30078 to the strfry write-policy allowlist on prod.)
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Per request: an address is scanned once, then never auto-scanned again. The
routine poll now checks only the fresh frontier (next receive + change
address) for new deposits; coin-holding addresses are no longer polled and
the periodic full re-scan is removed. Spends on existing coins arrive via the
WebSocket while connected; a new Settings → Rescan button does a full scan to
catch anything missed (e.g. a payment to a reused old address).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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This IP is rate-limited/banned by mempool.space, so REST + WS now go through
an nginx CORS proxy on the OVH VPS (mempool via /mp, blockstream via /bs).
Controlled by a single PROXY constant in api.js — set it to '' to revert to
the public explorers once the ban is lifted. Hosts are tagged by kind so fee
format detection still works.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Idle polls were re-querying every used address (~N requests each cycle). Now
the background poll checks only addresses that can change — those holding
coins and the next fresh receive/change address — and escalates to a full
scan only when one of them moves. Stable historical addresses stay cached.
A full scan still runs every 5 min as a safety net. Cuts steady-state request
volume dramatically for wallets with many used addresses.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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The mempool WS sends no periodic traffic on a track-addresses-only
subscription, so a half-open connection (died without firing onclose) went
undetected and updates fell back to the slow poll. Add:
- ping every 15s ({action:'ping'} -> pong); if no message for 45s, force a
reconnect (handles half-open sockets).
- reconnect + refresh on tab refocus (visibilitychange) and network 'online'.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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The mempool.space WebSocket push already contains the transaction, so parse
it on arrival to add the incoming UTXO and bump pending immediately, instead
of waiting on a debounced re-scan. The scan still follows (400ms) to
reconcile spends/confirmations. Removes the ~3s our handler added on top of
mempool.space's own push latency.
(Measured: mempool.space itself takes ~8s to see a coinos-broadcast tx due to
p2p propagation — the real fix for incoming-payment latency is the sender
pushing directly to the explorer.)
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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429 handling: route every outgoing request (address, utxo, txs, fees,
broadcast) through one scheduler. A 429 from ANY request now pauses ALL
subsequent requests with exponential backoff (2s→30s), easing off after a
streak of successes — instead of only cooling down the same host/kind.
Fewer requests: derive balance from /address chain_stats (no /utxo needed
just to total), and on background polls fetch only /address. The heavier
/utxo + /txs are pulled only on first load or when the balance/addresses
actually change. Idle polls drop from ~3N requests to ~N.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Max button: fill the amount field with the computed maximum (n inputs, 1
output, current fee rate) so it gives visible feedback instead of just
blanking/disabling the field.
Rate limits: eliminate look-ahead (gap limit 1 — stop at the first unused
address, safe because we only ever expose one unused address at a time),
query one address at a time (API concurrency 1, 400ms spacing across two
backends), scan chains sequentially, and pause 500ms after each used address.
An empty scan is now ~2-3 requests instead of ~10+.
History cache: persist scanned state (addresses, utxos, txs, indices) in
localStorage keyed by sha256(seed) — the seed itself is never stored. Re-
importing the same seed in this browser shows the last-known balance/history
instantly while a fresh scan runs. Cleared by nothing automatically (public
chain data); different seeds get separate keys.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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- Remove the online/live status badge and the USD price line, which both
appeared after load and caused layout shift. Stop fetching price entirely.
- Persist the seed + passphrase in sessionStorage so a page refresh restores
the open wallet instead of returning to the unlock screen. Cleared on
logout and (by the browser) when the tab closes.
Note: sessionStorage holds the seed in plaintext for the tab session — an
acceptable tradeoff for this self-custody tool and scoped to the tab.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Relying solely on the mempool WebSocket was unreliable: it only pushes new
events (no replay), and pushes can be missed (drops, server quirks), so a
deposit could go unseen with no manual refresh to fall back on.
- Add a 12s background poll alongside the WebSocket.
- Make background refreshes "silent": scan({silent:true}) re-renders only when
the visible state (utxos/txs/fresh indices) actually changes, so polls never
flash the UI or steal input focus while typing.
- Skip fees/price fetches on routine polls to keep request volume low.
- WS events now trigger the same silent refresh (debounce 800ms).
Unit-tested: silent refresh emits once when a pending deposit appears and not
at all when nothing changed.
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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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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