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 0x24ebd9150f3eacd6aa6ef75b3082b4aaa4425a881a72e33fe1a32bfc9b42ab7a. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45ac361c-3835-4e0b-8d10-277507502683.json and https://artists.proofprofile.net/proofs/artist/45ac361c-3835-4e0b-8d10-277507502683.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Corigliano & Rzewski: Ballads & Fantasies
Faure: Complete Nocturnes - David Jalbert
Adams: China Gates, Phrygian Gates / Glass: Orphée Suite
Adams: China Gates - Phrygian Gates - Glass: Orphée Suite
Les Soirée de Nazelles: II. Le cœur sur la main : Modéré
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2550fc43fbc482065091b2822bfe7a395f63574f7dffc76a19e095a9aa8cbdbb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAJ721568303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8916dc30e85eeb53ffbfee1b1b33b74d60216d05a3d076c616d3a70d54c3a21. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAJ721568312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c69de3fcdb26adf0678d001af4cf2e3d4a678de07362e50ed28ac1507a25e5. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAJ721568313.
Stravinski & Prokofiev: Transcriptions for Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60933a1f5790d61e8a22c79b58e1f855b84b07ca7eef6d32badba2a31e195a44. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAJ721364607.