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 0x74c7b66898f400531f1dfad1b73152b7f4c7b40f9542f2b67bf393acca25be0e. 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/e8cdfb8a-dc4c-4954-8c69-768bf4ad9e94.json and https://artists.proofprofile.net/proofs/artist/e8cdfb8a-dc4c-4954-8c69-768bf4ad9e94.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 0xfb2309a483b84de300d2486aa5f75822d2ee43900fc67472aaa6422b406c9cd0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:24Z), 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/QZNJX2391151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d6893a8312ad7ad707c15ec4fc89b8346dba1d00f4e253f4574518cdfed7fa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDFP2093143.
El Cholo De Fuerzas Especiales Bravo's, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde049dbfc1cc549cb6594edf3cec7468364fddb8e0f4350348a71115b8d3779f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDFP2095842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0de75e8de7ad33480a1466a69c2586512d8843f42204546131c0ef9b360eb8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZDFP2095843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85296c83e5d3241e930604ad43c42c3f09d2d5cabb51cf23f4c5430b81fc0500. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:21:33Z), 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/QZDFP2095852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833677a6efc3267dccdadb6d26dd7daaf63d198cfee5b27c3d9ee4a26bed4057. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:41:55Z), 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/QZDFP2095850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa632fd15a510b9853c721bed78371013dc8f731b7f565479baa2d18b2b46f51b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:38:03Z), 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/QZNWR2427234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed5d52b94374d1fd0a55167b62823ddb08445f8d4a47b0547b8b1798f443486. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWR2427237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c4f7c5f9a3745d9364171c1c7478610041ddac19f83a32cee15104a671c404. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWR2427240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e99923a6c781c48423787810431992a8d86cceea41ca37f0cc635e7537f11dc. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:22:28Z), 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/QZNWR2427243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198a14f343a8825b2eb8edd8e0c508290e3f166bb452716d6fde170139149d76. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZNWR2427245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2028291311aace65ba296321f957c847e6486e8ccb5ee172f80eee17b179e274. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWR2427246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bad7fea02f4fec205495362e1bf724efe61895aeac1654905b3b2ce7f8a3bd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWT2462539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22bcf34c8f2714fa3119ba9b937194fcb074847c3f5d79b4384615fcaa4ed7d. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:56:01Z), 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/QZTAT2446952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fb5616d4b9c197979bf07f7e6811a1f574f5aa55dd7de4944bd8251aff6cc4. 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/CBEYJ2453465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73bcfde77e1d632076641f1fdd45b4ff5c7a80ed37bb6b8f803d4f2e75bbd60. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZFZ42571158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0382ae6a319e859d8ca866a4d2e28a1a6d0525f5661befa13d4c03f6815ad315. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:45Z), 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/QZFZ42571163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491092ff6d108af398df1476bf8edb24478a076c17b34c403a5fdf879f84cc1b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:35:56Z), 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/QZFZ42571164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86b55026dab925f3dde5edb57e982050b04fa592b3aa73cdbd878acba4af7b6. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZTB62505849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4ed27b6f34841abedfa02af96e4889660780ea881fb9a6594bf38d9a11a02b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CALVP2512400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fba3b03fd406d4decbe3a1ff82f9419006c9b2a23b565955ef0afd8d9b9b83b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CBEYJ2505861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1c91500bace6dbac2147f32995d5498e7ab5c3f890923146a41f00b6792091. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GX53U2616778.