XYZ may refer to: Music Albums and songs ...XYZ, 1992 debut album by British indie band Moose "XYZ", song by Scottish duo Boards of Canada on the 2019 reissue of the 1999 EP Peel Session "XYZ", 20
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 0xc9ccc33d0c3ab5ea163a727a2e8c89e06eae2be6846fce82df5f5d61884fd2d3. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb7cc6b8-b205-4f70-a0f5-2ebbb37a20f3.json and https://artists.proofprofile.net/proofs/artist/cb7cc6b8-b205-4f70-a0f5-2ebbb37a20f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).