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 0x2200db23787d10afdc6fc5d1c8bb2ea6b9845e63b2e889cbde6115d672e461cf. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08ca54cb-7c1e-41b3-8bd4-256881a35d26.json and https://artists.proofprofile.net/proofs/artist/08ca54cb-7c1e-41b3-8bd4-256881a35d26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Malquerido (Original Motion Picture Soundtrack)
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 0xbf2c1af9e3abbeb2eb13394fceb9ce2665f69135527efe0e70d8a3ca2cf4d6e3. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCACK1548108.
Mosaico Pirela 1 (Perdamonos, el Son Se Fue de Cuba, Cuidadito Compay Gallo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada463c7cb82ffa3ed8e2023bf47b8f672fe6cf0bd794af7d14cab448d1a5c91. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:53:56Z), 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/TCACK1548130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb9c8a5c98cc501ca35cba7b330e55ea284086cae44db64d3b225e026e912fb. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TCACK1548132.
Mosaico Pirela 2 (Bésame Mucho, Sombras Nada Más, Manteca de Coco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08ff737251fc35904ddd26d62203b1ad020aaddcde43d6af3c2311db49ca8de. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCACK1548138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6f924455c6c0717f2fef25da9b67a1737fdfec31bc5123fa51e92ab875ee71. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCACK1548141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba60961a12c33a2714f9b5b314caa2854453ad31b96982f70aa0f8bbc463cd7. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCACK1548142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a7c110a923b67f3fbc18473949bc30bfbefb78ff1917e1ef7bcab9a4b17009. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCACK1548146.