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 0xc3549ea50c325677efb4c8954501737e35d2e155222fb4f9c3e75ac49076d3c1. 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/3da2712f-0502-4eff-b39b-3fa44b70331e.json and https://artists.proofprofile.net/proofs/artist/3da2712f-0502-4eff-b39b-3fa44b70331e.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 0x808c1c50bf8cd6a7b62324850f5f9da5cd33b078824a2577f92d211a2e357f90. 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/USZBG1114548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ec25b3749fb75a5278479f2792a12216eced5b3102a705164de24acf698028. 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/USZBG1114549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c04b25b8ed2fc98f9207263bf0960e4fd9833fbe98262d4db358d1d7e7ac11. 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/USZBG1114553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf807c10baa0347e6de2ca707f61d76dfa7bca83b12a6d6d48e546391fd13ebf. 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/USZBG1114558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5fba6de330fb68e97ec0a7099d07fabb5eaac2b36d5194fe84d4ecbbcf547e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USZBG1114559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0781e83acc42142e25a84f2fe0fd9ab60dbacef590ac5881d2e5ef7cf798fe. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USZBG1114560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7781d8e62e5829d9af2c2715db28b0194d9e325af88a96560bbad73dae1a5d05. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USZBG1114565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bf14b8a7be3dde8da890b9c440a798f96d104c08dc141407a406815b75fad3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:38Z), 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/USZBG1114568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f40ae5237d4267af57df46e4a4e834fd9bbd6ecd9438991cd47e1b7f326fb55. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USZBG1114569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8d502c83f1a7dad17207981fc75f563fc87cf0a6bedc552350363065050a42. 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/USZBG1115586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970320fbe186528896e3950236653b880cc58dd0c8f8c7ae182276f36ded75d3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USZBG1115589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884a135afc6606ba4b60924080707252c34daa51d50b2763c8c255d9f4307481. 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/USZBG1115596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9426c155a86c2ed573e09d33ce4373cb38aae14eb8a2ed5c111886117618aba2. 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/USZBG1115575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe139af7a1acbb319d9ccb7af50906534c47d77665656b9ec106cb502d0736d63. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USZBG1115577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdf1876d8a81a9f961b6d24387f3dccb7452c0a41e4b928dc90a9adedb10b20. 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/USZBG1115582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04781bd8240197c4d8229dba64eb86eacc772fb9fa8a01ef9993b2e941d3928e. 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/USZBG1115583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04be491a231f791fc44daea97f764e9cf6acb2dda7442efb50cd487b22d061f1. 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/USZBG1115585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456d5297101775bca2dd8e9b0b63a08b1cb61f155c682dd4175f26e80c8a68d9. 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/USZBG1115554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fe7ba8df6365b9d77c816b72d8b3a415dc1523a99265593c96767753adc3d5. 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/USZBG1115557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e34d287e38e4224bde12fb04ae68a7f902c88aea82515d70ae10294131121. 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/USZBG1115558.