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Binary protobuf POSTs trip signature rules above ~1.5KB; the demo now runs
entirely over public HTTPS with a path-scoped skip in place.
Co-Authored-By: Claude Fable 5 <[email protected]>
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Reference run for the upstream proposal: real deployed ASP, real deployed
bridge, real Lightning settlement — no regtest. Boards a fresh wallet, quotes
a 25 sat zap (1 sat fee vs second's 20 sat mainnet floor), locks the HTLC,
lets the bridge pay and claim, then reads the revealed preimage back out of
the ASP via GetHtlcPreimage.
Board funding goes through a helper on cs because a board output must be
vout 0 and sendtoaddress randomizes output order.
Co-Authored-By: Claude Fable 5 <[email protected]>
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A third-party swap provider built on the proposed VtxoPolicy::Htlc: users pay
bolt11 invoices from their Ark balance without the ASP being the counterparty
and without trusting the bridge with custody.
Scope is deliberately one-directional. An ASP's lightning *receive* is already
free (0 base / 0 ppm on mainnet); the expensive leg is *send*, with a 20 sat
floor that eats 80% of a 25 sat zap. Only that leg is worth undercutting.
- bridge/server.js: /info, /quote, /swap, /refund over Bun.serve. Validates
the user's HTLC fully (policy, hash, amount, expiry margin, full vtxo chain)
before spending anything on Lightning, pays, then claims with the preimage.
Crash-safe: state is written atomically and every step re-checks reality
(listpays before paying, so a resumed bridge never double-pays).
- bridge/ln.js: minimal CLN backend (unix socket or docker exec), named
params, maxfee-capped pay, pending/paid introspection.
- /refund is safe to expose publicly: the ASP only cosigns a preimage-less
HTLC spend when every output pays the refunder, so it cannot be redirected.
tools/ark/bridge-e2e-test.js drives the real HTTP API against the patched
regtest ASP: a 25 sat zap costs 1 sat, the far-end invoice really settles, the
preimage checks out, resubmission is idempotent, an unroutable invoice reports
refundable rather than done, and the refund lands every sat back.
Co-Authored-By: Claude Fable 5 <[email protected]>
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Speaks the proposed VtxoPolicy::Htlc (type byte 0x08): policy encode/decode,
two-leaf taproot (claimer-with-preimage / refunder-after-expiry), preimage
field on the arkoor cosign request, and GetHtlcPreimage.
ArkManager gains the swap primitives: htlcLock (lock funds claimable only
against a payment hash, refundable by us after expiry), htlcClaim (reveal the
preimage), htlcCosignRefund (hand an unclaimable HTLC back — the server
constrains the outputs to the refunder, so this is safe to expose publicly)
and acceptHtlcRefund.
tools/ark/htlc-bridge-test.js drives a full submarine swap between two
independent wallets against a patched captaind, and asserts the ASP rejects
both a wrong-preimage claim and a preimage-less spend to the bridge itself.
Co-Authored-By: Claude Fable 5 <[email protected]>
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- a rejected cosign (gRPC INVALID_ARGUMENT) returns the input vtxo to
spendable and fails the action instead of leaving it pending forever —
the stuck-pending state that pushed small zaps onto Boltz's 25k minimum
- ark ln-pay now takes over when funds are settling (retrying quote) rather
than falling through to Boltz
- typing a destination clears stale send errors (also cleared on tab
switch); paste path likewise
- typed lightning addresses no longer auto-advance mid-keystroke (the
matcher fired at `[email protected]` before `.com`, yanking the form away): the send
form offers an explicit "Zap <addr>" button; pasted/scanned addresses
still advance immediately
- ln-recv: HTLC vtxos anchored to a not-yet-confirmed pool round park and
retry instead of throwing; the requested HTLC expiry is anchored on first
prepare so retries can't inflate it past the server's grant
Co-Authored-By: Claude Fable 5 <[email protected]>
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The server rejects an arkoor mixing dust and non-dust outputs, which broke
small Lightning payments (a 45-sat HTLC next to change) and tiny plain
sends. Mirror bark's isolation: dust outputs route through a combined
isolation output spent by a fanout tx, splitting a non-dust output to pad
the dust below-threshold. Outputs can therefore split across two vtxos, so
the manager now classifies results by policy instead of index (legacy
single-field actions still resume).
Regtest now runs the full stack: dedicated cln-ark node (secondark/cln-hold,
hold plugin + xpay) wired into captaind with a channel to the coinos dev clc
node. tools/ark/ln-e2e-test.js proves pay (5000 sat and a 25-sat dust zap),
hold-invoice receive with claim, and spending the claimed vtxos.
Co-Authored-By: Claude Fable 5 <[email protected]>
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The ASP is the HTLC counterparty (second.tech's protocol), so no external
swap provider is needed: paying a bolt11 converts pubkey vtxos into
ServerHtlcSend vtxos the server can only claim by revealing the invoice
preimage; receiving grants ServerHtlcRecv vtxos claimed by revealing ours.
Failure paths cosign the HTLC back (revocation) — proven end-to-end against
regtest captaind, which independently derives the HTLC taproots.
- ark/lightning.js: bolt11 decode, lightning fee schedules, all pay/receive
gRPC-web wrappers (cosign, initiate, status, revocation, hold-invoice
receive flow, anti-DoS attestation)
- ark/send.js: arkoor builder generalized to policy outputs (pubkey /
serverHtlcSend / serverHtlcRecv), two-leaf taproot trees, HTLC clause
scripts, reusable per-part cosign helpers for package RPCs
- ark/manager.js: ln-pay and ln-recv crash-safe action state machines
(deterministic receive preimages from the seed, chain 5), mailbox
lightning notifications, unpayable-invoice -> instant revocation
- proto.js: lightning ArkInfo fields + mailbox lightning message decode
- validate/refresh: policy-aware vtxo validation and reconstruction
- features: bolt11 routes via ark when the balance covers it (Boltz stays
the fallback), lightning-invoice receive on the Ark pane
- tools/ark/ln-test.js: harness proving HTLC cosign + revocation against
captaind; manager-test.js updated for the consolidated bc-container chain
Co-Authored-By: Claude Fable 5 <[email protected]>
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wallet.js drops from 2,762 to 2,374 lines and now exposes two generic
seams instead of feature code:
- registerCoinLock()/lockedCoinIds(): features contribute coin ids that
spending and the balance treat as unavailable (gift reservations).
- loadFeatureState()/saveFeatureState(): namespaced per-wallet persisted
state.
src/features/gifts-wallet.js takes the whole gift engine — reservation
sets, gift records, coin selection, the SIGHASH_SINGLE/NONE PSBT
builder, the compact codec, claim building, nostr-locked gifts — as an
installGiftWallet(wallet) instance install plus standalone exports.
Swap storage/key helpers (loadSwaps/saveSwaps/swapNode/nextSwapIndex)
install from swap.js; ark state storage installs from the ark feature.
The silent-payment scan worker only embeds when the sp feature ships
(wallet.js already tolerated its absence).
Minimal profile: 412KB, down from 476KB (full: 578KB). All suites pass:
ark UI e2e, ArkManager crash-resume, gift lifecycle, minimal smoke.
SP's engine (scanning, BIP-352 signing) stays in wallet.js — extracting
it safely wants an SP e2e harness on this stack first.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Gift links now sort into the send/receive timeline like any entry: a
clickable row (🎁, status tag, age, amount) opening a detail page that
carries the date/status plus the actions that used to crowd the list
row (view gift link, cancel/reclaim with the existing confirm flow).
A claimed gift merges into its claim transaction's row — labeled as the
gift, clickable to the tx detail, which gains a "This transaction
delivered your gift" section (claim txid resolved via outspend and
cached on the gift record). The old pinned gifts header and the
paginated all-gifts view are gone.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Claiming into an existing wallet used to drop onto the Receive tab
(address/QR visibly rotating) until the background scan noticed the
credit and fired the celebration. The claim already knows it succeeded
and for how much, so the celebration now shows immediately; the scan
runs behind it and its receive-index advance is acknowledged so the
generic celebration doesn't fire a second time.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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"Claim it into a brand-new wallet that only you control." only fits the
new-wallet path; claiming into an existing wallet now says which wallet
it lands in ("Claim it into your wallet "Wallet 1".").
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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The existing-wallet buttons looked like inert inputs. Now: a "Receive
into one of your wallets:" label, a chevron on each wallet row so it
reads as tappable, and an "or" divider before the new-wallet button.
(tools/ark/gift-shot.js: screenshot harness that mints a real regtest
gift and opens its link.)
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Tap anywhere to proceed instead of a Done button, and the sent amount
shows in red (amount-neg) rather than green.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Ark movements are clickable like on-chain txs. The detail view shows
amount, date, status, the destination address (sends, copyable), the
vtxo id, and for boards the funding txid with copy + explorer link.
Movements now record those fields at completion time; older records
without them still render (amount/date/status only).
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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An arkoor send has no mining fee and no coin selection, so pasting an
Ark address now shows just the amount field plus a hint line; the
irrelevant on-chain controls stay hidden.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Broadcasting a board now lands on a checkmark screen showing the amount
that will arrive (after the board fee), a note about the confirmation,
and the funding txid with copy + explorer link; Done returns to the
Receive tab.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Selecting Ark on Receive now shows the address plus an inline "move
on-chain funds into Ark" form (with available balance / minimum hints).
The Settings card slims down to server choice, coin count, in-progress
operations, and refresh/consolidate; the balance already shows on the
balance card.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Opening a wallet no longer contacts the ASP unless it already holds
vtxos / history / unfinished operations. Fresh wallets connect on first
use instead: selecting Ark on the Receive tab, confirming an Ark send,
or the Connect button on the Settings card. connectArk() is idempotent
and generation-guarded against wallet switches mid-dial.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Receives, sends, and boards interleave with on-chain transactions in one
time-sorted, paginated timeline, each tagged 'Ark'. Refreshes are
internal churn and stay in the Settings activity list only.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Same card and tap-to-acknowledge flow as on-chain receives; the ack
persists in the ark state (shows exactly once) and a 2h recency guard
keeps old payments from celebrating when a wallet is opened later.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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- Settings: Ark server card (off by default, per-network presets incl.
Second mainnet + local regtest, custom URLs) with balance, coin count,
board form (on-chain -> Ark; funding output pinned to vout 0 via the
new buildTx noSort option), refresh/consolidate, and recent activity.
- Receive: Ark option in the address-type dropdown (QR + copy).
- Send: t?ark1 addresses are recognized in the normal send form and
route to an Ark confirmation (no mining fee) with a success view.
- Balance card: Ark balance line under the on-chain figure.
- ArkManager lifecycle: per-wallet instance created on account
activation, background sync every 5s (regtest) / 30s, state persisted
under the wallet cache key.
Verified end-to-end in a real browser (tools/ark/ui-test.js, puppeteer
against the regtest stack): receive, send, board, and refresh all green.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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Speaks Second's bark/captaind Ark protocol directly from the browser —
gRPC-web over fetch with hand-rolled protobuf, no wasm, no new deps
(crypto via the existing @scure/@noble stack incl. btc-signer's BIP-327
musig2 module).
src/ark:
- proto.js transport, ark address codec, mailbox blinding/auth,
VTXO ProtocolEncoding v2 decode
- send.js arkoor send: checkpoint+arkoor txs, BIP-341 sighashes,
MuSig2 cosign ceremony, signed-VTXO assembly
- board.js onchain -> ark: funding taproot, exit-tx cosign
- refresh.js delegated round (hArk): participation, tx-chain
reconstruction, hash-locked leaf cosign, forfeit swap
- validate.js receive-side verification: chain must land on the vtxo
point, anchor checked onchain, every transition sig verified
- manager.js persistent wallet layer: storage-checkpointed step-machine
actions (send/board/refresh) that survive crashes, mailbox
sync with validation, multi-input consolidation refresh
tools/ark: end-to-end regtest tests (receive, send, board, refresh,
manager incl. crash-mid-send + resume), all passing against captaind
with the bark CLI as counterparty.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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