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 0xa8d04c73ee5fed33d6c7d6a5c0efe4996287f0b57065d5c46f0d775b983ed271. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8450cba-cd87-48a1-a8d4-c2a8e5618bbb.json and https://artists.proofprofile.net/proofs/artist/d8450cba-cd87-48a1-a8d4-c2a8e5618bbb.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 0x7280a1a2623b44d50389a272c232f29e0be98bbf44372254a93c2871d6e2a158. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES5087100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2528df4af750c183f364d132a1ec66875524012525135d968d8ab055baaf2a. 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/ES5087300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a813ca4dd845862883b7e17fa3fcc2a03361a504ea70f26031106128c23fc54. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ES5087100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747f9bf3a3b704009b1f80ad2381a6e382886f865e15cedab681760a3177b3bd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES5087100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fe40f13e6225fdc1a816ceb98bae37c4c7e0b086eb688fb9e3f41fa60d04ca. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:00Z), 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/ES5087100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe433e3c3ffed0a3e02ee62a50ad4c1626f0fb570784005373e3935dd8a288466. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5087100124.
Los Diablos Cantan Con Tony Ronald, Peret, Los Sirex, Los Payos y Santabarbara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9392a01c93aba0dd71203cad3b0c90fbce23b31b26300f8fc68e2d6996c1736b. 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/QM6N21752454.
Éxitos de 1969. Artistas Originales (Remastered 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305b1983d8624e00036cf4baace75739818eb773cf80fbf32be401e148948921. 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/ES5151500797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99be47243a5fc93b7d719940680385c41f05c300a4609288ac80110c8091216a. 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/ES5089800380.