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 0x0ff6f0e397a68f4cd435e4d39861ed90ede6c30de32466f06bde6b9e92a48d28. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efc39524-508f-4967-83ee-996790d50239.json and https://artists.proofprofile.net/proofs/artist/efc39524-508f-4967-83ee-996790d50239.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xaaba5d650dffe0e85280a73264929d7c2b28e5634a5285d6c48c1161f7573959. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:53:58Z), 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/QZ27R2400001.
Reflections: II. El Atardecer by Pablo Neruda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde9d2b2078d6bca37ef39143072b2e30a2f2c88050686b295523cc39cb7ac19. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ27R2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaba5d650dffe0e85280a73264929d7c2b28e5634a5285d6c48c1161f7573959. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ27R2400001.
Chen Yi: Ba Yin (Version for Saxophone Quartet & Wind Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca69fcc69e19cc418ad41fb12b0f4d84910e77f23553e8aadca5288bc181718. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ27R1900013.
The Fifth Century: Eternity Is a Mysterious Absence of Times and Ages
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e241f1b0221a543c2216c88d5a68dc8762eca9bdc6f1d1baa536c58a633f66e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEB331440504.
The Fifth Century: Eternity Magnifies Our Joys Exceedingly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912b4f9ce739ace58a98b6ae3199757c14272d1fad29271e1c0f991976ebc0c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEB331440505.
The Fifth Century: His Omnipresence Is Our Field of Joys
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224a9d837db0718925653bd4f24e76e65688655cf201e9dc7f2833e50fceb656. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEB331440506.
Bolcom, W.: Concerto Grosso / MACKEY, S.: Animal, Vegetable, Mineral
Bolcom & Mackey: Concertos for Saxophone Quartet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d0038871e1f065b0269609996ddfc9af3282c40be26779fb7adc6b83499c55. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US29K1076701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712f77dc556629679e342bae7b79886d0f9d54f92719ef1802c4ee01fb03bcb7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US29K1076709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e45e6f46a09c48423353566050cca2f7328d1edd12da0ff26300d5d9679660. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ27R2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a131e94e6b44e589d50e4fd2043294b0556a0aa6b98e097f27431883651e5c4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US29K0869302.
Concerto Grosso for Saxophone Quartet and Band
Heritage / Evolution, Vol. 1 (feat. Steve Lehman, Dave Liebman, Rudresh Mahanthappa, Greg Osby, Tim Ries & Miguel Zenón)