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 0xd2bfa4def04b5a4fa08fc9b996ce1f03ca64eea50d17d1d0e92c562e48355dbf. 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/b38291d6-4f3b-4f18-b9fd-5ec41660c5af.json and https://artists.proofprofile.net/proofs/artist/b38291d6-4f3b-4f18-b9fd-5ec41660c5af.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 0x24c236ba33fd3ebde2a3605980fb084a2ca19bc59c47d7781a8ea9d133d3e9fe. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/ES64E2323898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82a96ebf7b4efc3b2888f9d0fd32af2da8451c7f37a54352a3c708ee8fdaaf0. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/ES64E2347897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50d17bef0db4af6c1759fbf43a603dfbfc651c6a707199030c635d0f4dc126d. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/ES64E2413395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776faa87f4b06a373faf956e359a5b011c95db21cb94d4e807d73e8bcdbaaeaa. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:42Z), 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/ES64E2418340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fe3e0515b71e3073f1c477a24d993e6e83f3f483733e4e0ec37eabe432f966. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ES64E2512045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcc2a791f26422b21c9eb87da5541b05c054570b995598ee2b64faab6de78db. 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/ES64E2513882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc07893ef294bba6c17b95310440866dc54fa3eea6a736e6a37bca348528acef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES11C1900965.
Kitt y los Coches del Pasado - Sofía Cristo Remix
Kitt y los Coches del Pasado (Sofía Cristo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffd1d4ab97fa9c0f4b6b501d7452c80b412f80327c5377431e73be262ccf527. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJX2444884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc07893ef294bba6c17b95310440866dc54fa3eea6a736e6a37bca348528acef. 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/ES11C1900965.