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 0x63b762ccee9446b84ad1e4a7ae3898d09bbc647a14950ad004969b223c98dd51. 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/375ec98e-d0f9-4635-a5d6-f782ce750df9.json and https://artists.proofprofile.net/proofs/artist/375ec98e-d0f9-4635-a5d6-f782ce750df9.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 0x39e9d03bc286be72290f96e80bfa215a448208afe9ca6abcf40781bca3936044. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:06Z), 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/ES71G1414878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65af825c9ae2a8719dc9511ca09345f615b71ad1a531011db02d74413b7b97a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ES71G1414879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ce31a5ff9ce6f9ffcce78ed1637d20d5347e6066356df63919556ce4f23e62. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES71G1414881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd482ff63340b49f71fa856372493aae36e53cdc38729a5c0cc9b72a4385142b9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES71G1414882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77314e479a961c49e851693e2ceeeae69ab2f51de57b46913487275af84262f3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ES71G1414883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b4463c3156ae7cb98c689418aac1abaa584d653d8897f23f8e2fed23eb506a. 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/ES71G1807338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae59cfa88ceb6c1c3744bca8a1d9c25538ec6d5e8278cbb197dcdc81caccdf85. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES71G1807339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4d1741691ead5bbbe0a3f03e4ebcaf02ca9e48f2f3ad820e88570e9d83a025. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES71G1807340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa565900f4ac2955c5580baec077745bebaa76dc36f72044479c525acee20f0a1. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QMFME1522524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc142b83d3458532d96df8beac1edbb650cd185a018f1de264118b342912fe32. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES71G1907565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751d47a44bd2cd90f918534bc4b24d5410e0349e4fdab072ee94fafc557f8bf6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G2047070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92a878926bf16f8343aa395ae16f691338598e8be44814f73cb2f871be277ce. 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/ES71G2054568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751d47a44bd2cd90f918534bc4b24d5410e0349e4fdab072ee94fafc557f8bf6. 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/ES71G2047070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbe6b9e3036f1625e068f85732deb45fff0047444b564669b090a722ca964fe. 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/ES71G2054570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2953962c66b41010e001cef1be8b1c31863775282f93deabd53629e5deab29. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES71G2054571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3597c7f33cf354de705b27b06f361275109160f126a0979e5d8c7b0e5b6c56b8. 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/ES71G2054572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5e08a26aaa869b895f9b0d9756af3a0b7d031e90420ecc9001f2bd06ba4a90. 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/ES71G2054573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef38837936f33e60729da40c3a3096174e7972883623363902df7cd8eabccdd9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2054574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda839b091fa76d0ecd769899ebe096e4a6eaab55a42699eabd40094ef79e333. 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/ES71G2302594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84bc9c9355bd259cac8ae24bd952c2ae0e5e1d1f8cd202b66f4f473edd4456c. 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/ES71G2302595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc821ecf09f92897bc6bfc25be614ab735205047943f1432aa0838eda9e4e1bb7. 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/ES71G2302596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3992c1471bc4d1269b6d73992c5729c5d3a784a30b3f3a88373f9196e7c2826. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2302597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab23316a87038ab4fc410e1a55a8d891032791cd6af2b1e1a8d5510853bf2ca. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2302598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6e4e6a6652413d46b1e3c04560e7ce43c6f9d33b58c7f32d0f67710e97d387. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2302599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92a878926bf16f8343aa395ae16f691338598e8be44814f73cb2f871be277ce. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2054568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751d47a44bd2cd90f918534bc4b24d5410e0349e4fdab072ee94fafc557f8bf6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES71G2047070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbe6b9e3036f1625e068f85732deb45fff0047444b564669b090a722ca964fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2054570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2953962c66b41010e001cef1be8b1c31863775282f93deabd53629e5deab29. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2054571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3597c7f33cf354de705b27b06f361275109160f126a0979e5d8c7b0e5b6c56b8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES71G2054572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5e08a26aaa869b895f9b0d9756af3a0b7d031e90420ecc9001f2bd06ba4a90. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES71G2054573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef38837936f33e60729da40c3a3096174e7972883623363902df7cd8eabccdd9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G2054574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616784f089668a936d7fb4524838ca773a1a94cb3e2df5b4aa4ee05299ed160b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES71G2336416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424a9042b70e838e164e4f09454ae865f5614e95797d0c186fc251f49dba75ab. 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/ES71G2336414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f4a1a5940c35ed71d2cb01ffa543b0d6a286d927fa6291989675e0901f56af. 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/ES71G2336415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616784f089668a936d7fb4524838ca773a1a94cb3e2df5b4aa4ee05299ed160b. 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/ES71G2336416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099fdf6d1f08974a4b41843a530a7695891dcdf88437d8a6faa9ae01adf0af91. 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/ES71G2336417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda34b53f63e76fd271f2260f63ff6725fd919468cca69a328bc94354d95afcaa. 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/ES71G2336418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aab38013f88950ee857ad01eeb3a4a81f0790bc053e4f03f333568e703c0d57. 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/ES71G2336419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a196dcaea6a1b985e7c644e1d34b5d91f725965aa3ba5136201a8ff2c1d12e. 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/ES71G2336420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf05cd9299d63201008d91b6adb138e5c0377fd3cfa15f3ed5e0c8f0511bf699. 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/ES8021600023.