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 0x32ea1c1994d623570bcf892ab3084ffbec1e5192a305c0ccf16702c3ba88db99. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66b2118e-28e9-47a8-ae7c-2eb44852dadd.json and https://artists.proofprofile.net/proofs/artist/66b2118e-28e9-47a8-ae7c-2eb44852dadd.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 0xb11142b54f9ec5c14e803bf7a89841eeacc9c9dae98ef7e92b33e2d502c95557. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:32:54Z), 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/TCAIQ2418713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3be442fc533a52d703ea53ef04abb746e6b77d871ef3591d4be86e4dca32b4. 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/TCAIQ2418721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7608b9387dbb9c4457261ff427abad1183edd9230670953edabd8ccefd5dba2. 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/TCAIQ2418725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742eaee1c1a24f084d72a0366a13568618b42359393e49e76a7e180f16f2373c. 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/TCAIR2418728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399c36a5e90abd915b87dd61aa7612e72082182f01f92dfedc9ffb32729286ae. 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/TCAIQ2418730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5318bee99f80d8e1387fb760350df13b6d3a7c07405fa8a91b2792ae562d84. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAIR2418733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0695ddd1fb2d6639e1d3085ad2e2e0802471bba679a59d1194a450666efc926. 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/TCAIR2418739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba8690b842bcccc487b1e60968589623490ea4b352f1caeb14420defde36756. 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/TCAJB2498082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f45497a2fc5f8fbfeafc1e85461447b915872c40dada4e9cdd0bd5d458692c5. 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/TCAJB2498088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca5805617f094fb7160eed06b8392624ae631e26275694f8cdd1872424f492a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAJC2498091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23a69651806b404710b3719aa5d4f0695a355b1e2341599a6cac7d5e44cd438. 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/TCAJB2498092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319c6cf7fa643d09f3472dff18f0c135ee311248fe62180cb92a2156a4c333b9. 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/TCAJB2498098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371c35eb372f109007237c3fd28ae0ce927e0cfbe39ec55ad90f58f035028a54. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAJB2498102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6828340dba87bb4abd9cf71baa3e7ef822529caa26d50552acb24bc789b6653. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAJB2498105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19902c63dea047d24cbf81c498c4cc39c181938a24c8eebd884cbd43c994aed0. 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/TCAJC2498111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e88f6760ca534eac0ab455477a46e4103ff5d827726e12e482b13bde281add. 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/TCAJK2585380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe534b1eb94ebcb8f28045c866037b306e371221a7d17d8e63e296b29c3f59cd1. 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/TCAJK2585391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54e0edce007daa0a010c33b51ac07253918f901bca781a9b7f7acdc6478bcc7. 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/TCAJK2585394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d1f383357a4bd0558a4b20e3fe71237b558810e387c2bf3942285fa2882974. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:35Z), 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/TCAJK2585400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f34feb5aa2000cedd010731b038e0d8eff8222f508b9c9bccf9d355ddc1190. 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/TCAJK2585404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aca769824772ff056345f37a3b042343beed64626f89f3e567e3ea9f444f08b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJK2585429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9729e399cbcac0569a314337483f257c909452f1c2842184a4de02c782e9411a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:07Z), 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/TCAJK2585151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436615f9abe444dc25585268f8cabd4e23b2b2b86822850471c727ab287f2702. 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/TCAJK2585160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df2110fb1266a9c00d5d27dc79a6fd83c037daf45c0a2eb76172b9b49ef8a20. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJK2585165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb058f71f6442a9c64f9eadd53cdab7bb65548befd1b18704f9a0a701d2cf2a9d. 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/TCAJK2585176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb187ba79c828d65f69867bb35d42fc42f062896fdd1b624be8ce8f18947b4def. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:10Z), 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/TCAJK2585182.