AER-1 corpus vectors / Chain vectors

chain-bad-genesis

Family: Chain vectors. Source: base/chain-vectors.json in the AER-1 corpus published at zambo.dev/aer1/corpus.json (kit 1.5.7, draft-zambo-aer1-26), file SHA-256 10de1cadb45b8d5c91ae94a601c6bb567aab59b26e89abbbb64af6896d3aba19.

What this vector covers

Entry0 prev_digest is 64 f chars instead of 64 zeros.

Rule it exercises

draft-zambo-aer1 Section 7 (normative): entry digest = SHA-256 over base64-decoded canonical_bytes; prev_digest links entries; genesis prev_digest is 64 zeros; timeline must end with a closing entry carrying close=true

Input

The vector input, exactly as published in the corpus:

{
  "timeline": [
    {
      "id": "ecf6e525-3d71-476f-a06a-8bacf7a2bb49",
      "canonical_bytes": "eyJ2ZWN0b3IiOiJjaGFpbi1iYWQtZ2VuZXNpcyIsImVudHJ5IjowLCJub3RlIjoiYWVyLTEgc2VjdGlvbiA3IGNoYWluIHZlY3RvciJ9",
      "prev_digest": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
    },
    {
      "id": "d6dabc32-c148-4078-81b6-857b64cd6931",
      "canonical_bytes": "eyJ2ZWN0b3IiOiJjaGFpbi1iYWQtZ2VuZXNpcyIsImVudHJ5IjoxLCJub3RlIjoiYWVyLTEgc2VjdGlvbiA3IGNoYWluIHZlY3RvciJ9",
      "prev_digest": "d0c7be68007aba75d58b56ad1e552a8a366370859d63b241516160e73c8c4cb2"
    },
    {
      "id": "985afa0e-5be5-41e1-abb9-7156c37156cc",
      "canonical_bytes": "eyJ2ZWN0b3IiOiJjaGFpbi1iYWQtZ2VuZXNpcyIsImVudHJ5IjoyLCJub3RlIjoiYWVyLTEgc2VjdGlvbiA3IGNoYWluIHZlY3RvciJ9",
      "prev_digest": "70d443ea07e04876c0f9f6ea2efd1bcddf7aa54bcbd8cb336738252de0a96a0c",
      "close": true
    }
  ]
}

Expected result

• expected_verdict: invalid
• expected_failure: entry0 prev_digest is not genesis (64 zeros)

Checks it exercises

Try Zambo free: add Zambo to your AI to run this kind of check on your own agent work, with 20 free calls per day and a Day Pass at $0.99 for 24h when you need more. Every call returns a verifiable receipt, and a receipt proves the saved result was not changed.

See the full set in the AER-1 corpus vectors index and the AER-1 corpus checks index, or read the standard itself: draft-zambo-aer1-26.