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 0xe347437cbfe3b270b3038ddc51379e74908341649c4e0227520d94296e230a80. 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/ef2b92be-7976-4ec7-846d-f199deb74229.json and https://artists.proofprofile.net/proofs/artist/ef2b92be-7976-4ec7-846d-f199deb74229.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 0x548e75b5b7d2ceb1d1045a07c0bda26c9f4789aa1ea70ff2e39577a85d1ea85b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEP551926408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb478b6b40aa623bcd71d6950842497af1198fd617d894b6cc56aa9b2548307. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEP551926350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87201086031a05718e76f53449158995f990495940571934de9f0d52d7cccc94. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:52:18Z), 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/DEP551922769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f4cc6387b4ceb8b804c10a94b1506c7b51b197ce4bbd8f0a4d88bdafa7442f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEP551945832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44162b6eef8e462acfbe52d56959188b84d64826193934335b267458babf9ad1. 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/DEP551948198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc533f41bcfbe5fe605dc18091845ddd3f5966192e117c9f4ef66fd3cf3fed87a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/RUA1D2241961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7334898eef786029b87fa578b5ce5cd6b372c9d31cd78eead9bac63072e6d61d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM4TW2344156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf1aa82015172995dbc2edf78bf75c1f941dc1fa69536f047cdf09a6a96d714. 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/QM4TW2367824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67fd5b72a16e5187ef66192307a09870b846280874d23007b57c307399eba8d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMBZ92336318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27af9fb316caee60545b769aa7616af7e5069e4b11c8205053ac2140468dab4e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA062432063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06bfa75cb6a141487b9dd95ccab25b5739b5e74adcbfa7af9b46fe5f8c671fa. 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/DGA082451964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bcdfc055bf0206975e1c5272fb7463d75fbbdce03e5fd613b7298322c50773. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FR10S2545651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5577dd07f33542cc2003894081483b55a84b21ae280334a100c85e18d9264b19. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:37:42Z), 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/FR59R2530019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f18c3c1874b5c761d2f7dc589af74237a04078c9af9bb8c11a0761d977035e. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:02:08Z), 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/FR59R2588321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad99b8235553bab0d893dcf19f616ce4f5ffc77dd25bf0f519b089659520164. 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/FR96X2589645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ae0b7f3d134c111e54ad45702075926c1ecfbdafdfd61765dcd6e11e73a38e. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/FRX202564800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fb286b581e80bdfca3f844d240260d90e3d2ddc04d11023a4c7ce5023b68b0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FRX202564801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359adb1164f631cf51e14f0f6f4e125839edf13a878ba53331cb9d108e31b9b0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX282542502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1d24845b8cb774b1286a555be929480337d22120251f515c11e2f393b165ae. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/FRX282551890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20ed713f85f054d537b89c5f1a96429a46185e8d2c159811c6d3746a77d792c. 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/FRX282551891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfee7b3e241212e2dbea00dff4fd15f9be62dfa3f1998951cbea456ef7265170. 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/FRX282551892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf18cad8e3205d8b812cdd69492a5db3f35314815b5449753cac912a18021c5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FRX282551893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa381df38d94f9de1167b51c9143a7ff1f0125b2b4e37b0178e07224aa58e3d7c. 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/FRX282551979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8116ea503878c44825882c66d06e7c8e9e19e6ce2d235910647c84b538c241. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:02Z), 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/FRX452515512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d39fc0da6f711e800b0f2093089a1018a6c427f99412f523335d89a239b168. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX452548379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2ecc2b466cbfa763d56ccd940985c952c9bb07cd9f74dc4fde9d58b3efd8dc. 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/FRX452548380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb287e01ffd12b5db27e7e778629b9c8a468513a45e46ea4c9b363cb37bb8dc0c. 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/FRX452548167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0bd3966dad586938badcb7d03d1549b4ff0a073f362a8e0b9f63a330bb9fed. 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/DGA052599538.