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 0x1788450417ab7fb0322159dfc8d46303377b9cf3eada9781ceaa2b0c0fe7cd9f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78151a9e-29e9-4d6c-9da0-1aafbda7f733.json and https://artists.proofprofile.net/proofs/artist/78151a9e-29e9-4d6c-9da0-1aafbda7f733.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 0x731229dae4f971b0860e52fd7f4c1fab2dff9459add103690f531c4c1c08c044. 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/IT8TZ9433507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07777cabff73d3ae6a0c87edac3a3c14d294ac60505a1a23a3de8396f153ccf0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR6V81291138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39364012f8b285a56814a88dd7f5e9dade1f44b1fea216214775131af0453018. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:28:30Z), 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/FR6V81291140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6d48981ac1039fb05e3013c1105e46303815633b44439c7a7b0d4663740cd1. 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/FR6V81208453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85438f5d2f3eaca21b0b31339f7d90eed03cf0ffe3b17d181e93d5e68b81b0fd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:32:49Z), 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/FR6V81208454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3008602dd11248308017592fc1ca764f3f1cba0dd2e1ce83e4744a4399e3552a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:07Z), 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/FR6V81208462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c881f8d80bc9dc07b1e0b2717ba71e1b74de94b9fc583ac9b7bc881c88b44c. 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/FR6V81209406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3118965e03c158b4516d2a2b486318e7bb310ba88af0239c0420713df1cf8936. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR6V81209409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed58365c9bc61ae37573b6940d6b58d664c7d03583b328bfa0f655cdcebf9404. 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/FR6V81209411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1c984d2a2aafec9a617345b8ca6af40b9d299335018bf99e40386d3f83ba3d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR6V81229517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dac8cac38e613ff23b995f05bd29f6f536d1ecd3f6610a74e1630286c3d324. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/IT8TZ0055501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d682ba3b6592dc3abf5f34eeb229f8f5dccd2a4970d00901544a4be6312b1f2. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/IT8TZ0055512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3267b3154a7ab79121481d977a4ba1de20b02ecadfe3123deadb5ff9de1df182. 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/ITKLS2000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a02f7ca016dd7bc7e19171d7065acaa8c76f9cd26bf7a6c8447f4e2428dd9f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ITKLS2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f0ca93a9ddc77893135a967455e6670984e575eac92c7525e203d4f6dff32c. 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/ITKLS2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c5bff953ad6d7c020ab31731f7b183a4ad88a5d5e377d9b1c4afdae5728c94. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/ITKLS2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca85345c13361eca003b4c1e70399141c4a15d0737406768d2e89ff1cd35451. 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/ITKLS2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da4f844ae83e43a45af350c3238d2e3cd396d4053b7aef7f20a7ec91a7e54a9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZPJ32160671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d54be440969aefaf771bea43e191620e779c8f8eb0e6474a1a8515e755dd2. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/FR6V81275396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0bcfe2f03b871cb7c7d6a409034179502807925cb1eaafad0fffeb71fddf85. 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/ITKLS2100256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494be288a70cc4f0f91ba21c3afc9d5bc5849677d84699effd6996ed3a667620. 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/ITKLS2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbb3e95035b7611a5b4e7be8bbab39826959b72e3a86fc9cca1f38344e8336e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:54Z), 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/USCGJ1258163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd570d4ec3c13bec87ef6181dece2f8202ff6bb52816e2f942ec6fec6cf9292cb. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USCGJ1258164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed03659d5cbdf462a9605127698b3851de1234f0c6716763fc7263c30c15cc25. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ITKLS2100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8054437a0c591d12f8539a0ebb2ce4090ab1f18ecc07b38ed7bdd605d6efa8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITKLS2000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd233c9bfcaa6df2cdf9fa3d5d3a115d13ef512a5fab81eebfd5e67edce6c528b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ITKLS2100292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d00f29b9479944bc5d7e311731654647e810917c194ad0baaae178a70f3fa2f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ITKLS2100297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a757724ce9ee78fdca7495e8f8f8eabf7b1d9373ce91db8e043e5cbba760396. 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/IT8TZ1676701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e37b93750aa1cf47727b367c81730616932f390576e5bff3b48896804687c75. 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/IT8TZ1676710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048937144e87d23e6c9a6917497e7831c96a65a0284b5d060f0eb38aee780d1b. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/IT8TZ9434902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800c420c418249e08da657152deeb4f0ac8751eb64572ae1664376a6044a47e1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:47:57Z), 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/IT8TZ9434909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d2da711163947f0811b4065937b9afef22aa87c81eccb15280d20605ca3b96. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ITKLS2000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d8a362a6efed62fde255972ebb3161388d9d91de75c194f377820358fb4f69. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/ITKLS2200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f68f0d1bdcf0c15d8778bf503eaab11e6a23e899963c451352ad8f7e13af99. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:13:24Z), 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/ITKLS2200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fda482a450188c5e16bdedb32c5ed5ec98e6defeb3bd6aa3abfd42b0ca5d87. 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/ITKLS2200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a843e851e16f6255483d9b7a78fa7841fcb03d6a76116e7952bb79f504120be. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ITKLS2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bbb659c008ffc0a5bdf992c1c9c81037c911e90daf8e053233797ec59d447d. 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/TCAGM2274204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78413750eae018f839f864c387ca59d920525a864d3e2dbd825f62374dcbd62e. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/ITKLS2500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9633d22780584cd684200d8bff37a439805bc471bb8b6c1cbad7902438d69c36. 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/ITKLS2500170.