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 0xb99ae0efcafc66c731c287f2338af2eb4b7aad428442fc16fc024aa0b729a0f2. 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/fc363b95-0210-46be-aa63-cfb009a62c4f.json and https://artists.proofprofile.net/proofs/artist/fc363b95-0210-46be-aa63-cfb009a62c4f.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 0x163620dff42f87ff511d035bb1c8149f99a35489b08c5d71dcba19a86b589c37. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ING642301607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2998826abc003b8e1393d2678908c3946432bb2ee33e9bd802810f32b69b21c2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ING642301617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90750985b6e9244e4f955bd49a493fad126d8f42a362b582de9688deedddc79. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/ING642301644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab67e8ba5bf6780c772e2154b5e2b62f2274890ee68653d68a252547f0eecc9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ING642301632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14637e067acce324431974a40a5b484accb16c43d70441c8f54fb67af8361b7f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ING642301667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1c649ea9cfe673bd40b026c5751bed6ca9f3ad6780dead6fee195c5616ed84. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ING642301687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6848e0a65f9e61b5115358e4ab04bf9b8a58451aa677d74d6c95ffaec4db211. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/INB942302623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5451fdba6db7e28b5f91ffef32abf78400e4095a1e7dcfd21387b433acba1c5c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:33:31Z), 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/INB942305749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a7ba195b6a10aa62c2107c52ee6256664f8de33f5bf1f49d16ba8788cbc33a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/INB942450953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9d28dbfa706fc258cffe0f52818d97deff638f869e69d4cdd916a1ea94f2c2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/INSD11935990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a94c64aee495f4b123f3d93b4cea3611fd42eb71a223fbc5ffecc4751faded5. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/INV792400856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3377e225af2457a1fcabc9eae6a294619ca46826e8c55148a0f2ad722869843f. 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/ING212461915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c244977b127f200310dca20291826c12147085e99601d72afdcdd4f9c3a9c2e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ING642301606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f6ae972f2a353c36f3896064b5f574ee0c17caa12be55bc36326558346ef29. 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/INB942453303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0481e5c7a3294bae6cfcf2056163a3cd4131c80669eaa0265195bad2c31a9fe. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZZ432323187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bc4a923a0f6ceb029bbaa57209ede52f1ab18722dc133678aea78d08a5b026. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/INT1A2204779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54759ceb5add7df53d1721ea2a130e0617e8bf63eb788c5a43e5cc670851cbc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INB942433998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa9902d6d9556f91ef376feaab2790e7a8e633b7e56c42d09e8c2f286fc07bf. 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/INB942433986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbec3bfcd0bbfde8225b66c0d372d1851ea454ae70b9e21f82fe316fc655fc4. 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/INB942434145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482bf4def47d1a72e38a59a729ea4349355ff7822802dba1024c996700383833. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/INB942434183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e55369ee726b3af41040b56587cf6d9db3cd96ad47d6a5a4cd55cd1d3398bb. 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/INB942435101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc039433da99bb26b36c7f0c3228738e7cf431b33e035255c245a71d2cd0d955. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INSD11948073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61570cf51a35eac3533fe6f7a417ac64539239f982d5864a5cbea1d15e719dca. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/INB942436221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33771935db4d5c48eca1e19b4fd83a4553a7f4983f88179db71264b4fec5fd94. 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/INH722302124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b37db5d3306603d77a5817476d18bd569ac6e3d94c1696db467c258ca89c1ba. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ432379507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd0bf8c4c0768125290d643ce40d5f84ec6ccd72b8da0b185cb520ad3a55737. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:44Z), 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/INSD70012384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b9ca3f90cc5d1e38b2666b1e555bf9c0deaf1bf81a5834867bd9b7fcd8a671. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:01:35Z), 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/INB942437551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9207a0a54d4dfa06e6ba34459affb11f958a27a7b6f0fa5aea60b03d9986a18d. 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/INB942520745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710598d96af2ab766515d6d72c99b2f1a68557f5e1035aa9a657ab3155db4d01. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/INB942524069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d5beae661d9925ad2c18bac299c186755cb09acb59050458255e3a1a6f079e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:29:38Z), 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/INB942524246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65002088c700a47267ae692fee0451ebeb8066d4381bb916324cd9260e69827a. 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/INB942524518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061094fefe80f7bb96760006ee086d6bcdc88471920c523277d78fa9d079c3bf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/INN202500479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd592b6149dbd563b8f6504f107a1e4607652230fbe9bfc64e0f09e7e5d5547. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/INB942530926.