thumb|upright 1.25|Wild horses stampeding A stampede () is a situation in which a group of large animals start suddenly running in the same direction, mainly because they are excited or frightened. A
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abf4372e9b33a0b32d3881923a40a13e101e0fc40d351c7776edbe20f952672. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b09cb1c-fb57-4fc1-b3d5-457ea067532e.json and https://artists.proofprofile.net/proofs/artist/3b09cb1c-fb57-4fc1-b3d5-457ea067532e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Official Bootleg: Live at Reading & Mildenhall Festivals, 1982