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 0x6a2134e23da63db3fdd60d248f4a8b2d59443b948eb61153a7cc578e6c714b0e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cb0a75d-2d70-48cf-8a96-b6d12e66fd3d.json and https://artists.proofprofile.net/proofs/artist/3cb0a75d-2d70-48cf-8a96-b6d12e66fd3d.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 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 0xb75754b150c91a6ed6fcccc95ceb0df124d03a6d206db0754dae1670cf7503d9. 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/QZNW72351925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf177f3e0b94c500daf68ab69024b0c7bcd5218edf0ea2827ee2e2d8fb322bfa0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNW72351929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8d62bc2f7dacbb9db89fc5ac348f38a1e8746d268bea15fd78c9fccd33cb7b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNW72351935.
De Puro Gusto (Celebrando 18 Años de Trayectoria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fe137647d4ca3c4c84fb33fd4b91618bc8ff325e473add5e00de3a78914887. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR96X1782618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbd3c3d2d86eab87f222fac5af5b17804ef3b9a7aa5eaa49cdf6036e407c780. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X1782619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d3fca365a03bffe408069a22c71104489abe1b439949a2fd2f1ed2da035cf0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X1782622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7461612d8645da2a5808e80c97747dda0b7f020c347318a4316d11f35d8107d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR96X1782625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f62ae3280da21b5f8443998e22765776659dfcacba1e95e1141ae53830e885. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR96X1782628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c77797c3f64a83372452de5b1ef598cac2ab36e4e6ff57ac8c21833ba4c424. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X41407419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf41ed1ec2dd76a738fc2cc9a17031248d02711a8ec2c1227c6f3de6e332eded. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X41407421.
El Torito de Petate - La Fiesta del Carnaval
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef483842af4520169b1b230814766b2c8926da5cd652de3974ea0d4a1936c70. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X41407422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ef96a375d2a8a7ec8d0fb1a6d2b4fc5d14f26f88f63121c74c1d7575524542. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIL2430163.
La Boda del Huitlacoche (Versión Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fbcda49992b9909ab8e4749a8cb334d8e20913b3bd5cc435731e9d96f1dfa9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESA012226937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47b61030aa9ed4ff7675ff5b09fbe49c44d3b106f716ba6ef8ae2266f7b9571. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ESA011863790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ff091eab5491e4f93cb833d8294a2ff42ffd776e65aabd53e01f6aa48237af. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:04:41Z), 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/FR96X1801541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5ef9d53481ce5601cd0650467e72febc2bed6cbf1d983f03547c52458931d6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR59R1871428.
El Africano / Hay! Cosita Linda / Mi Cucú / El Negro Jose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598616aecc0ad983e33f5a8a56d8f3a99295c39e03a945f9b8f247062eae348c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR59R1871430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf906379301fd3707b94fe191a9d7508d242197223dd958892db037bdbc24e602. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR59R1871446.
Un Puño de Tierra / Te Llevaste Lo Mejor / Cuanto Me Gusta Este Rancho / Amores de Julia - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019cd8e78b9e702564791dc9c768d90388ce80e38ae107f68e89fba83c8272f1. 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/FR59R1871447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeace61cac69a9e6efb641181133f99233324ec9e071bdc1a89c55008c4cccda3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR59R1871377.