{"copyright_id":"0xd5759ff9b1207d7dfd550af2f7dfa066aad47934be1fa4938d0c8cf30519629d","name":"Payton MacDonald","registered_at":"2026-06-16T07:56:42Z","symbol":"NIM0987231","token_address":"0x1430916097bb4dec3fac6afd907eee1de697bf1b","type":"artist","uuid":"33ced10d-cca9-4b8a-8d0f-4dfafcad7cdb"}
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5759ff9b1207d7dfd550af2f7dfa066aad47934be1fa4938d0c8cf30519629d. Chain 2 (Bitcoin): anchored in block 954015 (2026-06-16T22:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33ced10d-cca9-4b8a-8d0f-4dfafcad7cdb.json and https://artists.proofprofile.net/proofs/artist/33ced10d-cca9-4b8a-8d0f-4dfafcad7cdb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Payton MacDonald: Solo Marimba Commissions, Vol. 2
Florid Organum, Snare Drum Duets and Solos
Explorations 27 (japanese marimba repertoire vol. 1)
Payton MacDonald: Samsara, Concerto for Tabla and Wind Ensemble (Live)
Explorations 40 (Standards Vol. 1, All the Things You Are)
Explorations 69 Arts Letters & Numbers Live