Nocksperimental
Generated reports

Generated report detail

ATTACK: evm-hashlock-family-mismatch

Fixture attack-xchain-evm-hashlock-family-mismatch-v0 generated pass at 2026-06-10T22:58:55.226Z.

JSON
Status
pass
Steps
1/1
Invariants
0/1
Snapshots
2

Environment

Mode

mock-fakenet

gRPC Endpoint

n/a

Fakenet Command

model

NEGATIVE CONTROL (expectRejected=true): a multi-EVM cross-chain exploit the invariant MUST catch.

An Optimism (10) HTLC leg locked under tip5 - a hash no EVM chain can compute (registry-driven check).

expectRejected inverts a CAUGHT exploit to a green proof-of-prevention.

Next Actions

  1. Replace mock poke and peek execution with local fakenet adapter calls.
  2. Replace command-backed fakenet metadata probes with stable gRPC-native probes once node surfaces are available.
  3. Persist generated reports under a project workspace.
  4. Add app-specific invariant packs as the NockApp interface stabilizes.

Invariant Packs

No invariant packs referenced.

Run Steps

Observe terminal joint multi-EVM state

bridge

pass

true

Invariant Results

Each leg uses a hash its chain can compute

critical

fail

Observed HASHLOCK MISMATCH: optimism: tip5 not computable on that chain (allowed: keccak256/sha256); expected each HTLC leg locks the shared preimage under a hash its own chain can compute, with distinct per-chain commitments, under xchain.htlc.

Alerts

No alert policies configured.

Adapter Observations

No adapter observations captured.

State Diffs

PathBeforeAfter
xchain.observedundefinedtrue

Snapshot Timeline

Initial state

initial

876c8c71e70278a6

After observe

observe

b4ddfc9ab370f349

Artifacts

Report ID

lab_attack-xchain-evm-hashlock-family-mismatch-v0_20260610225855226

Report Hash

sha256:e3939f1e2446edba9ac28d18238619f2a45ef357d96ca1c3ab5de585c052fb80

Snapshot Root

b4ddfc9ab370f349

JSON Path

/bundle/server-functions/default/.nocklab/attack-xchain-evm-hashlock-family-mismatch.report.json

Markdown Path

/bundle/server-functions/default/.nocklab/attack-xchain-evm-hashlock-family-mismatch.report.md

Markdown Bytes

1094

Changed Paths

xchain.observed

Markdown Preview

# ✅ ATTACK: evm-hashlock-family-mismatch Lab Report

Alert Summary

0 triggered, 0 clear

Verification Candidate

Candidate

ATTACK: evm-hashlock-family-mismatch Verification Candidate

Status

watch

Signature

unsigned

Invariant Packs

none

Report Hash

sha256:e3939f1e2446edba9ac28d18238619f2a45ef357d96ca1c3ab5de585c052fb80

Snapshot Root

b4ddfc9ab370f349