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 0xcbd61b9a200b084ba1dfa9cd6b0f7fc781d14e7f4cec67e39c2720808c504140. 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/2b28e22d-6081-44e5-8775-6de1f98ce630.json and https://artists.proofprofile.net/proofs/artist/2b28e22d-6081-44e5-8775-6de1f98ce630.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 0x8b329362833a2aa0409f143d612159c66b94b6897ec7a39dc3bc498f08e6a240. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:00Z), 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/QZW6T2200815.
Putain de Rue! (En La Puta Calle) - Bande originale du film
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61620f5a1ae6700080c0c6a3d8899e8a016a13702e4d1545f1c0237ed704a52. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:09:34Z), 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/ES5100100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1cfc946763b4c5d64399848ac126954223cd7692ccf06b5160089d0cc50073. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/ES5100100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce24793953b0ce28db7040f768e915cb65fcb46300da962dde05e9149f84c15f. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/ES5630702144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1636d86684e705c1b9e49a552f1e66733c7c16e5466d7b9009894e6c44be72. 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/ES5630702145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16122866fa8d88204da32ac456c72676be79aca54229c3b76474763ba59cb7be. 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/GX3Q92027822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89a10c7fd9c71a7fe73216637ec1eaa3876b753add81e0c179e19c7672effd9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES8401301972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ad7ceb7aae20b856622a15c5876e84501915ca3a8b6bfb986546545dd89b8d. 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/ESUM72300673.
Va por Ti, Frankie (Concierto Homenaje a Frankie Ruiz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7678d9fa4b886f82b68151d1cfaacc0e96266755a1238b45691983f5ff2e6a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES8401400273.