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 0xef41c6e83d3652f218ec8503389c68114614c9716e893074acff005333f0dde2. 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/0c7a092b-dd75-4cd8-9322-2c4a5c8c97e6.json and https://artists.proofprofile.net/proofs/artist/0c7a092b-dd75-4cd8-9322-2c4a5c8c97e6.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 0x7198a932094d9695105998cbb1c55f253e21a117e4f238bd2699ad8090064752. 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/UKDMZ2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732a850c578f0e3ffc985ba6e967ad547cca4fce1616fc16458956b58fb08f5a. 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/UKDMZ2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9849936bb3ad84335f552ddd32ef933028b007af5f0a2ba77121a86257fd0f. 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/UKDMZ2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03168e072ca267c541d15c2936139e79a49d0ccc26bf1f0913f7737e846ac1f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:35:08Z), 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/UKDMZ2300007.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276ca277281c6fb3b82dc2aba873b3ac349906890ce857e8c3e5f1b13e074a4b. 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/DEF271931202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614384f258b34565c2c6faaed4b5a19dda7fa5f6110e865d73e2c63ee7037a9c. 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/DEF271931207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1680cb57bd9d23183f04e5e8d5612b03fcb7d4d0d4f3ade027d0786e9faaa89a. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/DEF271931209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eb005ed16c73bf1bfe8816a1a537ac009d62e84fed16f6a5ad42de97e331eb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEF271931210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70da24ad7157fb991cd27149bb27fa05772274a8915d7c2983a84dca16305d7. 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/DEF271931212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dc6a233e675ec7662773c26603c8b81569e4a443726c90ba316e8637b3cf77. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEF271931203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a58204efae122bd0486813c0fc601799d342237013f3c52f478c8756a7092cc. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEF271931205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8a177fd288cf6d2ab6fbee7a86d30a75f90b44d04df3881365547da32afe43. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEF271931201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570d0a6c78d7691a9e95c83eee242c546d3d1c67c062d99ad204fb6bba5871c8. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DEF271931204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0476b72d8422528f9ba2b0e0c8a2ec0a6a68f93d150a59351d7870bda3cf107. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEF271931206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf677ada687a7db95117550e0e673fcf970b9309f04ddf6f6d28d3814b08c55db. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEF271931208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e0fe723c4ea1c6781ab0ee5e67830bcf192a093b9d3be82765d36d8b6a362b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEF271931211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd818635bc9f5ea64028707be93855246667bc475d3933de55297b3a8999a14da. 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/JPB640600161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb818f633d3447da7c9e67107bd4570b3576a735f0d7f29448a1231c88f5f93b3. 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/JPB640600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa4c8ce934c4d8f642b4aee74f555c0fa516f997e85b63ef3e542547d78b0f3. 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/JPB640600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abb0aa89c1f78e4fb208ece2f6a43f9590a4cd0af3e8e639bfcd854651877f2. 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/JPB640600165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd317c062bbc4b85680922d74c6320e40b20dedec44e425e1f9ec24f3c1fe2ab. 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/JPB640600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b349032606083ce4f899c10ebb8f350de9506085b42c752117583992fa9324. 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/JPB640600168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85eaf96bd4cfbc116ff1b25d2caa4687eee6c2f9dc12133976ba13bfc24b71e. 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/JPB640600169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95ddd1d98921d3d2be3b36a71c6aec4159dd6346e6c3d3e0ad0d1ac27a07f57. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JPB640600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257aac02a3c62d9e9f04870061d847e6351bac8a428c596cd2962e7f7eac0c6f. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/JPB640600166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8317ff751afead958193e310f57d201a98e4db892e84bb0b8336ce86cef07f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPB640600170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2383def8298b5862bf6d9c3c59815dbda38de56515ec48d365466b298a82fe1a. 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/DEU671501213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ba987dfbdc8571763d7f2c5c994b85d63e209c7a7c3f073e3bb5e184786e67. 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/DEU671501214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d696eb370b1d1f4b73462efedb1af02f4dcccf07326f458fdbc367234ce3db. 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/DEU671501215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945cac9f38cb149f2856c3854be2b77fe6b959ffd04c61f7560ea7dc1ff39709. 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/DEU671501216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963e0e85b599d4a88b6084f48d8019a29d8dbe2779bf87138d568cd10132c7b3. 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/DEU671501202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf52b16c697a82c9ad53a6e8d3194bbb9882171b61616ae759d8077903c4ef9. 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/DEU671501203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dba333099d91ecd884d3198b489cb6176e7a96658f41f9bf4fe9a7f7e77852. 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/DEU671501204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7cbe3a87608e55e5c4f0e6628b62dad6548640cc52227873b2cb4849cdf7e5. 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/DEU671501205.
I'm a bee you're a flower - The Bug remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06a35afeb93cf05d61b94f2da64eec9863f77a3775ebec5bda7a080bd0529a2. 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/JPTF02328601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b1abf83e5b3ac896958441003fdeecbbd42aa2f23922609c527a0e08b5e797. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/JPTF02328603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29314d925cccc2659abe521f43e734b81df8b018a5f5125842401dee2b6c661. 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/JPTF02328604.
What if We - Rod Modell & Taka Noda Rebuild
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274fa1f64b5e84ea7082b593146e547e66a1904dfc81619ce14bb5ec30fe84ad. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPTF02328609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd702f9c0fe71c191fc6a969e68b68d3bc634c08b303a92357487701bb05a6726. 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/GBBVL1209702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db65522fa0b34ceb21af7936053cdc0fa2d01a9d7743033aff9904081df0cf8. 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/GBBVL1209706.