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 0x40ee78a526d352844560d473548d5ed67e803e6fe2342e85d180ffcff9291e46. Chain 2 (Bitcoin): anchored in block 953886 (2026-06-16T04:37:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cb4129e-7b83-46b3-bbed-221a824513f5.json and https://artists.proofprofile.net/proofs/artist/0cb4129e-7b83-46b3-bbed-221a824513f5.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Geleerde Droomwereld: Bruin Geluid in Pianolandschap
Piano Bekrachtiging: Bruin Geluid van Triomfantelijke Klanken
Rijk Van Bruin Geluid: De Piano Horizon Betreden
Ontspannende Pianomuziek: Bruin Geluid Eden
Tijdloze Afzondering: Pianogeheim In Bruin Geluid
Heiligdom van de Macht: Bruin Geluid van Piano Triomf
Kennisparadijs: Bruin Geluid in Pianodromenland
Klavier Inspiratie: Bruine Geluiden Sprookjes
Tijdloze Dromen: Pianorealm In Bruin Geluid
Denker's Utopia: Bruin Geluid in Pianosfeer
Eindeloze Rust: Reflecterende Piano In Bruin Geluid
Rustgevende Opkomst: De Wonderen Van Piano In Bruin Geluid
Tijdloze Eenzaamheid: Pianowereld In Bruin Geluid
De verbeelding van de pianist: Fantasieën van bruine ruis
Eeuwige Afzondering: Piano-Rijk In Bruin Geluid
Bruin Geluid Nirvana: Pad van Pianotoetsen
Bruin Geluid Extase: Reis van de Pianotoetsen
Vredige Wedergeboorte: De Magie Van Piano In Bruin Geluid