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 0x070d718d16e8daab4dccd91293765234fb73958828dcf4cb47234ca805729b0e. 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/db2c4c5e-b470-46a6-987b-e19f70fc3df1.json and https://artists.proofprofile.net/proofs/artist/db2c4c5e-b470-46a6-987b-e19f70fc3df1.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 0x343c8eaeb2f36a0081f3e849733379fdf0d3f535c4ccfe25b34d782b1fc2d949. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6I32236487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb522f044584e4d51e208c6ee32d65ff8eb6f10cde20bc84b7ba17c7675f9e319. 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/SEYOK1920238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48709bf73e25d4dfb91a13ccb65686beb84ba5537724f4d576550a858c4c8839. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6A92146915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a4d257b50eead762194a35e8c0169b145b171545a7982d227d68baedcf119. 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/SE6XY2153692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158776d82a0f3423cf09912f4eb0af362591751558f2e2c9db87a626a37b1306. 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/SE6TI2102463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe1a5b2f1a3768f22ca14d3481560d91d68a1a97a4688b260c4b8a7ca2be21f. 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/SE6XW2236249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d18af26c20a9b0443c7014e1c7faab634bc7a70092b9003af3ce6897c1a7ce. 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/SE5752246052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38579cfc718d62ce6c2eed888984cdbc8634cbd3d247b4505951608a48ff1f8f. 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/SE62M2197189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5d5fc1a658c1af0f7c06f9ad6902a9dae544b50eb22c271ea3fe90296e3d50. 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/SE6XX2134552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17e1131ee4ea4cc55e460cb1fa73038221ee02ef71582f62fdee5e2dfe9fe85. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6QE2143543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3940fcd10787ddbce33cd72294c9101315b4717e74b5297a72eeb3774b76d9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6I32185407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe915e4b0a23de4f1744b6f308c1d15177e9422cf907d4e45f5b052b9803e9fe9. 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/SE6HN2189120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc7c86ac0a6748e295808b6d96e7ade000e8d48889a5dd1a5769425a6f5718e. 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/SE6QE2255506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169afd3c317832041c41764ddb119384c98e2879ace04f00873667f9b8fb08b6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE6HN2131906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cc50c63a9024c09d237f2adf6f1f695c15072356720e5fe14c24e57847054b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6HN2131909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aec2a7c0acf709de640e1e04e0b8c6b8e2a87a01c07fd9d0f5784a581886761. 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/SE6A91900589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba109ee62542b4a82954f0e336aaca898ae832f7b689c9ca6fdb962e6700fb4. 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/SE3SA1809901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972b2b1548499bbee83349d10699ef0a7de6b2c5bad275f9aeb93eeae332a765. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6XY2120871.