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 0x9f77e4391809f4e64438b50aa5e868bf50dd716912007c9bee58b8b6ec07c4d4. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2861d37e-58f0-4a39-9be9-d61bd062a238.json and https://artists.proofprofile.net/proofs/artist/2861d37e-58f0-4a39-9be9-d61bd062a238.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonata in E Minor BWV 1034: Adagio Ma Non Tanto
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 0x18ddd4c88b229932f3e359736590e7c216048d687b14163c22352b7ad6375cfb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESAAI0263283.
Trois Mouvements Perpétuels: Assez Modéré
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21d64cc2913d43f76aaa987a93017850992999f0626abed34d637f4afca933e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ESAAI0263287.
Trois Mouvements Perpétuels: Très Modéré
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66049dc15648dc7dc5efe62d77dc5a29ffb6f76292a27e20ca44db39ef282f83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESAAI0263288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f44d1b63e44a6c08aa50cef5b017e9f02d7552cc2236d84e5e25defa00f1e6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESAAI0263289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278c98ff028bf412c906cc82619a3055e419c8d48b8531521576d0a6c96634d6. 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/ESAAI0263292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbfc32892c4cd95c5f447997ff2eb9c893d1ddfcff028c2a6ac643b44217fc6. 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/ESAAI0263293.
Haiku del Aire: Brotons, Brouwer, Bolcom, Carro
Tre Divertimenti, Op 68: II. Adagio Lamentoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb20169dfbfd3b94bd6fd800d29f05add893569658339491799c3e29eb8b68c. 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/ES74G1300719.
Haiku del Aire: IV. Se Ha Escondido, en el Bosque de Bambú, el Viento de Invierno (Primera Grabación Mundial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7178f6fb4fcad46f9cc3493c3e16c2738b61f1673afc931f69d7a5d00beb6496. 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/ES74G1300727.
Haiku del Aire: V. Desolación Invernal, en un Mundo Uniforme, el Ruido del Viento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddb64328b6aacbfeb65bcccfe7f79b698af5634c619e256167601734d219f5c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ES74G1300728.
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 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 0x03b68698bba57a56fff2227d607f683e4559a9ab4425fa903e464e0e9d6e4239. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES74G1300730.
Salt Of The Earth ; Beethoven, Dutilleux, Brotons, Garson, Loevendie, Albéniz, Fauré
OBRIGADO II (Muito Obrigado): Antonio Carlos Jobim [Ao Vivo]