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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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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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