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 0x0545c15e236ea102ace785219a7d7026a6fe854511030009bb29e96f6f67bd95. 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/b1c2cf71-d2fc-45e6-ac72-0f22a7be82e4.json and https://artists.proofprofile.net/proofs/artist/b1c2cf71-d2fc-45e6-ac72-0f22a7be82e4.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 0xd5d0217f797366782144097764b1c550fa86cd70f6e673a5ac6db856d6005bcf. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:38:09Z), 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/FRX762383417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb89eac3df66d91e21ca0cb9e7f9bfc373ee8a769e0d7d2c1cfb724e1b77fa68. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:59:15Z), 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/FRX872370487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83d88c5b5759dbfd8d6a938cb0f4bdea3c9a3f270028b173b8d4e52992a44b2. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FRX872370491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f471115910f7b8a7d6743314d4a6f24efe06deaf3784d29375325950de277e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:10Z), 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/FRX872370445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20ce84f8466ae68bf95aa1df8907e8372de4f61ff3562c7e76e105cee7b364a. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FRX872375920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1586c82c8d4f3dac74044b507463b0e77e8b38060dd7d9283b48e61377faeee9. 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/FRX872381888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a46c86d56271c9fe746a910e297f030f0282d9a3a5a54151e8e71ec88e0b6bf. 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/DGA052301589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07bd198f47e11761fc31afa1db11090a9803d1adcf7e6b898f368a0057d2fe8. 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/DGA052301593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751b90cc73568d2a34968ba32c84d3409c16181fade799b8b0c078fc3d187fa7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:55Z), 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/DGA0P2389946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626bf13eb0cfc1cd8f3069c1aa2c2e143b0f49d6b94f2e25637191d65d4bb4bb. 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/DGA0P2389942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034926ac23ec49ee5dc7d56deb8b830fab8d621bfb2eda0697b3c1203559822. 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/DGA0P2389945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aabff448249949d6e45ba96064b0acb7839034df64fa13e2e45bc7227825194. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:06:09Z), 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/FR10S1748531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfe1c2849b9c6027866fb85e04eeca97f0360b4a8f7573163cfcb03c9eda5cc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DGA0Q2300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3ec5a040a5f81b8768bff6df5f7035e13e6ba3e35966f8347131990fd2844a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FR2X41936675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3e3e4ca4cb4b52ec8494a372d42a87fb3b75da0ab5c3f5a1d16d1cbdf2465a. 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/FR96X1934947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3569b2495f9c22415c83686522cef3829fc28cb65aeaacbe158f6a757e85d17e. 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/DGA0Q2304456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8f89f6f8102f536dd8b02d7d9488d406955114e336ec9bde5b6da9c4fa61e3. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:42:43Z), 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/DGA0Q2304455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ea99c828a33706fbe40a394334051c2702a02e49d250351db5a93c7c87a4d8. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DGA052298976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998f0bd791c0d4b862767818d5bc94e18c364233e87418157822a8cb5d181d74. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:24Z), 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/FR10S2366925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f28bcf161445b17e61fa1306f0174b623056a2695b70232f787cd13c891aed4. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FRX282396360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490848a6916e720bd72cd38a0d38be0f135ccfbb891d4da337313ac879f06052. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:43Z), 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/FR59R2577398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d622345bcc030ed05acfb8f499550e9f9be1f29d1d125df28c88209d8cd660. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DGA062579453.