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 0x1f86711339501c39e568ae866acd2dacf12ca863f9ddce9920c273df2a30cf75. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd9f0f16-8c1d-4aac-8cf3-eecc044daaa2.json and https://artists.proofprofile.net/proofs/artist/dd9f0f16-8c1d-4aac-8cf3-eecc044daaa2.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 0x9eaee1739825c2b37f39094ad45f12ad15f2c467dd336640c2ae210d03cd0a80. 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/FRX762165013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8736887c6f107c8b16a8f937ee3b53750ed388a2decf77744881008434e089a8. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:06:55Z), 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/FRX762165016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a64f2fd363591183ce9f5b3ff8d1cb709470534e787ebc14a3d83dafd75483c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX762165017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff0845138d15576f06c2ad6bab9e42d29c09c95484413722c5c92298c26669c. 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/FRX281978471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb55649a6c92cf99c9461179ce212c517e01cd61674a01d62015b784a4ee344. 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/FRX281978473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1d63938b532eb8f8d9be7c456428de3eccadcac75cfb93196c6752dc5f942a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:27:29Z), 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/FR96X2090873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ac7b3d814711c484e729b971487561d2768e4c096d685746d3243b4f8d3c3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:46Z), 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/FRX202097239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9d818558f7a1d4e3d2fc75eaf0f201fa3cc529d7fed356536e517add681c7e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DGA052041012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e77c539ce676e339aa9df5f2a6b4d7aa115cf40b7dc7fa7d7f55857b1d68909. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S2122066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ce580e85dbd9a42147766479cd5d65739bd74c3962132fbe5f54a1bb533f91. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX762114497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916ba3d51ed79a36a1d92357e38b41ad8880e2da576c936e91b052efbf203928. 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/FRX762114498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157d152b26a98a262819ebe37bb419c5827cc5bb28d62513497a99181a5aeac8. 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/FRX762114500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c135d52d7f260e545978d3058a8b3e323474225d3571f50e094bbe65f88624b. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FRX762114501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f51ce439a05aacc9ff00876a7f4d99d3579c97af90806246e76b2d6c6a73908. 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/FRX762114502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb58a6f18a3fdd7d75a99b688817c55ce3a501a3cab5e690513f94c2a2d74c03. 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/FRX762114503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dc1bb0ced40a3a92c8240e4f4a3342bb5f7708dce8987177d5a6890b617560. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:52:41Z), 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/FRX762114504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4a98e7877492099c6c919771589b80124f3199b9dc5368360c89b74df0d9c6. 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/FRX762114507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0b8fa777283ed3dc6b342f32fdded4556f77bee5113efa751ba77068bfc440. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FRX762144326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59befa64a83cbe83572d4749442b575dfe4043d5b6b931851b099009868c9b6e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:21:08Z), 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/FRX872141440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f62e7720a20b27841186a41cea6f8c3fe7df3075b2a265d5bdae63f68230570. 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/TR0362000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd733032ff5972f0abdd3a1785244b51e9f9915f6d4bef735bfe0432b6c7b857b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TR0362000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1562a3e1c429d95d27e747a845979538569c725e6bcbe511c8560dff2b59b6d7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRS182143403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4961eea11259c1b608fd2e240b6dc3b15360e727b832f0b4d66e2f7d2567ea7. 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/FR10S2201126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b1adba6aa171ea1fe57b29546f9ee636ac0fce145471934410ffc59b2055e6. 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/TR0362200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471e22d751ed8cd44d25068e670899539cb625d8d56a22f9356c79a362cd1bc. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR10S2268668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a450d430465d7de26c7e15b1d62a25d99180a7d1df516b617b5859def6725bc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX452202088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0249e19b1c46b740591c96e35f9b8d54cd2fbbfac2a2ab749f8e4f34d3b9cdf. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DGA052210754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0624f13f8bc801dea4bbd3439bac609c636f3335b74fde8bb01ae3594f746d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DGA072293149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81496693a4edd807170b05c722aa08cdafe9af7f037d41c969e4800728b92d68. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX762300955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19203e22841a4b7e260475d60defc716ba85071ae68f4bb6409a5904ebd5bbc8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX762343600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945116c18cda051bf2c2418ece190b2133dbdcc015e8bb4cef1b2253317f1e8e. 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/FR2X42406310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e62fb2e4d4da532385fc41ad788c1994d5a5148f66ba181c49693dc3da3782. 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/FR2X42406312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c773549acf557b827aff163a7d59bdbd3753100ab86592f887233a00e49bdd1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR2X42406314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1263f99134b1b2d9d15636a80a6f4fb08d2847c410f30a30f90a1e22634e4447. 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/FR96X2435294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bcd8fe16873c5cb89ef2a4a14a40223662bd137df65a1ddb82aad7ff8e14cc. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DGA082409675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57c701f3258885bc8aa4ed5f87e2a803641e784a1386ed922b886eb01207698. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:26Z), 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/DGA082458536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83874650a8b48daea7929f2d70262353261d7d71ad23d88dcf4fceaf25c657ed. 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/DGA0R2475007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70036595ed4598aa6b9c389feb40ed68ed5a5513815e230ab4e58f381cd45cdc. 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/DGA0S2451538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f5a64301c15a69fb8ad59ae2ab22c4466af9ca68b7b58487fdb2ab6903b2f7. 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/TR6792503085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421125990c08df0342a1866f212f7327092439b9a62c5809c46202a5ffd2713f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TR0362200027.