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 0xa2bb163f56e9bea1321f8bd1a331cd42baa84990037d75220162a077bdbbf2f2. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8772c7bc-216e-4a83-b8f8-24d141b37c73.json and https://artists.proofprofile.net/proofs/artist/8772c7bc-216e-4a83-b8f8-24d141b37c73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
100x100 HMS by MPE (Vol.10) [MAKINA x NewStyle]
100x100 HMS by MPE (Vol.11) [Melodias & NewStyle]
100x100 HMS by MPE (Vol.14) [Melodias & NewStyle]
100x100 HMS by MKM (Vol.16) [Melodias & NewStyle]
100x100 HMS by MPE (Vol.17) [All About NewStyle]
100x100 HMS by MKM (Vol.18) [Melodias & NewStyle]
100x100 HMS by MPE (Vol.19) [Melodias & NewStyle]
100x100 HMS by MPE (Vol.20) [Melodias x NewStyle]
Rave Revolution by MPE (100x100 hms) (Set.1)