Verification Receipt — PYUSD 2026-05

Contract: 0x6c3ea9036406852006290770BEdFcAbA0e23A0e8 · Period blocks 24996368–25218797
Manifest generated: 2026-07-31T20:39:08.770775+00:00

This pack is sealed under a single SHA-256 Merkle root. Every artifact below — source evidence and report outputs alike — is committed to that root. Changing one byte in any listed file changes its hash, which changes the root. Verification requires no trust in ProofLayer: only standard cryptographic tools.

1. How to verify this pack

1. One command: prooflayer verify PYUSD_2026-05 — re-hashes every artifact and rebuilds the root.
2. Any single file, no ProofLayer software: shasum -a 256 <file> and compare with its row in the table below (evidence files are stored under their own hash as filename).
3. The root itself, standard library only — leaf hashes are sorted, paired, and hashed upward (last leaf duplicated on odd levels):

   import hashlib, json
   m = json.load(open("manifest.json"))
   level = sorted(bytes.fromhex(e["sha256"]) for e in m["entries"])
   while len(level) > 1:
       if len(level) % 2: level.append(level[-1])
       level = [hashlib.sha256(level[i] + level[i+1]).digest()
                for i in range(0, len(level), 2)]
   print("VERIFIED" if level[0].hex() == m["merkle_root"] else "TAMPERED")

2. Committed artifacts (1723)