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 0xfa2290e1e2ae8cfd2fa32f22a6de374302b553cd90a015f0d46e4c736651a4d7. 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/a0d48e8f-2ee9-4adb-beed-2069a57269ba.json and https://artists.proofprofile.net/proofs/artist/a0d48e8f-2ee9-4adb-beed-2069a57269ba.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 0x22d1cee913f234da70cbccda8b8995a72405ac6f111da6433dd173b6c93138b3. 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/USL4Q2029102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8174f23ec7e3c1a22e6862b33376706c186c4d93bc139d4287c0cc76fc4be84. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:47Z), 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/USL4Q2029112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f92f3ca4e74bb949e90b88b9a73eb32e1da550284494f42430f80e3aab328cd. 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/USL4Q2029093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ecf68a6732d215985876c95d99306d17aaecd1c24f372a4d6f7248ef539d5c. 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/USL4Q2029113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e96af51671a14085ce35af401311796ea6f755935f62d90260ae8a5eae3649. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USL4Q2029094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c64699b0898d963ef881af556fef63cd901d9b6968eadd10e60fdc4e701182. 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/USL4Q2029103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3937d6405555641a6acd92b16cc8820c2c943eaef996f09327e5efd46303ca. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q2029104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ba6be6b15bd8c4eeab1131228e2dd6ade442fbddab2952bd9fbade53a70995. 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/USL4Q2029095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa256dcd67b414c033f67b895a5bc720389b926e01f76bdc2e413188e86c87266. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:08:11Z), 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/USL4Q2029114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7204e42aad24a6099982f36405216c6d692b4ee62e092fb1393ba2ab8fef5fa2. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:11:29Z), 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/USL4Q2029096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167e7106221ea1f9501e56b9b1b530ab28bcbfe4dfcfa8badf4659576aeedae5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q2029105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e4146dd8ac8da71d9b5925375a1b9ede29a2172069035e09a351d7b93fb196. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USL4Q2029106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7adf7f07019c0c4f75888056fcebdedcf021a3d340d9826c8150b50666578c8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:23:16Z), 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/USL4Q2029097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb352ac6e0606a5ef2cd3b8d098f08d4d5f6a4e98b2d53532e39828e7149b8307. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USL4Q2029116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f3fcffc243b47b007990cfde92a205be73b487b339f62a2cc4509af237302c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:28:12Z), 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/USL4Q2029117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69b223ef857389bb8c7329c9640929b327a153f20d836b8d190718905d9d543. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4Q2029118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57510e07d6e94c171ace619560d71f9d592c58ae96036e5a4288140c5284ed1. 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/USL4Q2029099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd302e4b19d60451515f306b8cc69de0ce44d2d0c5f6a28621398a82230cb0728. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q2029100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6cb4af57a1175bab2ca53b3028d82aac68a2af0576e334226efad04092a01f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4Q2029119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9527e1b5c059d89a56dd733be4f5ce418e22f8038b83c12989ef9ac16585b57c. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USL4Q2029120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dbc945c6b59610ac5f27a0c27d43060c45d8880266c5be5a30aeadcde5dfc0. 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/USHM82394317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23818bb2d273bea5844131bb926c4b2de2774ec396e574ad74a22a81302a38c1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:40Z), 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/USHM82394318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cc2afee91f1040642223a01a8f49b70641c3c99f10ed546f61201f4b47fb4b. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:42Z), 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/USHM82394319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a473eb1916c7c343ba8a447f1073e0c6f8728d424da670cec9acf81536ce0b0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USHM82394320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0a21a1c2a3ae9aacfc363ace0e6eb781760604482daba8ff4a8dc840aa6128. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM82394321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bfd13bfee613f55c56b05bcd06894c752e5a4de5d71c9a75588da4188ca197. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USHM82394322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eea8b2ddc4110e4022385872827e42ce9c82f0345699139236230d8d6718a9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:22Z), 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/USHM82394323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e99ff0ec9b5622276e7732dc85d23ebe313469f3dd64e096fa4acae4a752f53. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM82394324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe754182eee46b5884aef8b4d5eb84b77d9a2665a6f1837b330b022f12b66cc10. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/USHM82394325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d4fef666a9f27c0836c3063dc07e85ea70ea84f613703a3203490774d91d30. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM82394326.