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 0xfd249e46e9b87803f61f1193a341e53ba2d5a58329c6fe836678ecad59e50d96. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d85ee2f0-52b6-440e-9d2e-263d674e16a6.json and https://artists.proofprofile.net/proofs/artist/d85ee2f0-52b6-440e-9d2e-263d674e16a6.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 0xfd4ace3f57f3ae53e823279224c128d089d1875a6a325d983e4d6219dbf4c00e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:20Z), 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/GBLFP2522973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7e60f15d45ae9751060c45dd5c48135369dd34f60e035527151d2f152a3969. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T13:01:12Z), 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/GBLFP2522974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd862e1bd0286d28e9094cf6239eb2e629e97337d0a39499a1b338b2a5762611. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/GBLFP2522975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8702eb6db80760fde1365b1f37f06e90b975d06629c707ef98fd441ee687a79f. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:47:37Z), 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/GBLFP2522976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d563bb9d2179dec2a9f5cedac6a7678078a113dd5b4400ac073204a1824fa2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:56:26Z), 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/GBLFP2522977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f6381553ca4c7d5ca20cf965f1b2dc3105abb9ea58c676352aaa7651ac3b1d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:45:13Z), 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/GBLFP2522978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c739614fd7c7f5b33f630d859f26166f0f2623d06e69b2f4fa18395af28d6fa. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:43:21Z), 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/GBLFP2522979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a718e715e020969888e5d4cff4df498f9ef6e93ce176e0719ea56989d5cdf48. 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/GBLFP2522980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5275dfcee6a6e1645e4cde514e6f78284a269a50c556f463dd568064fc9fa59. 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/GBLFP2522981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d7983147587a7dc1136d741deb134fd897fd5245a3dfe61570d146d9e64118. 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/GBLFP2522982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a4bb78de62e96e203ced9bd44466c47fa9acc78cac7ad85b57caf478f8ade5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLFP2522983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81113a58e9606396059ed1023c733106444a42cad0e63300a235fd961e6c6f36. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:31:47Z), 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/GBLFP2522984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a686ee2ef90588d1641a9a1d9da7a3b18192c1a1803220230c7ecdd29aee58. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLFP2522985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb88e4a96b1e032d8632a3462eb73aadd5d49f98d481c4aed9f7d9349004bc3. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:09:55Z), 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/GBLFP2522986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe40d55106226c5cd6c10836b51feef516e29c0969bee3368ee10e7858dbc09. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:38:27Z), 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/GBLFP2522987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02df30c71b5a7fe57ccb84307cddb621e6dc43116f16f342aca54d64c984917e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLFP2522988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4eb1766d3c8d5a9b3a6cd878b9f7b830dbbe1f60fe97a8d0f2916cbbbe8ea8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBLFP2522989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6366f6b5f5a9bb8b6b578290f20cc85f0be74c645dc9f5c1193750d1a063b808. 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/GBLFP2522990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae232e4fb7e81e554da092b3d53f1dc9ace13a66bb1d9827d14a819a664a3e59. 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/GBLFP2522991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a5b9574ccf173517679cb3c30f301d19afa484a59703560ca4b7da3102029b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBLFP2522992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ecccc6be92f7d3b2a29651f3784126537440a4a51277b8c5240b761fb60e74. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLFP2522993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4e8e19d5083284015df24ad3d0324134b639c60382791340b3f5605cbff253. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:54Z), 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/GBLFP2522994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c40d6f1c9910edb6d0b2ff40b9838870ef459eac581dacf58c3075f0c87e82. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:28Z), 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/GBLFP2522995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfa04765bba15105807800de02955934386788e47ceb8b5da55ed7eb5b30281. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:04Z), 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/GBLFP2522996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4748b6248dd38d38412665039b6dd49839dc668b87fe0135e3d3de0b0791e2. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:08:59Z), 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/GBLFP2522997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eaa7681a3dad9ba5cea0362bb1399cf1d802cb14374f1438e294146a8719b1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXH2J2597477.