1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xdced2ff26aa09099faf127fd574217092c3b14e72b1bdaea31285ad9e436732b. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2af74ecb-369c-47e3-b576-119575baf5d7.json and https://artists.proofprofile.net/proofs/artist/2af74ecb-369c-47e3-b576-119575baf5d7.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 → block OTSBitcoinBlock must exist at that height 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 0x049b60ad1333ef08707e234f721e1103b0d631c5dc177c5979199fa67ef3fa70. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/DEZ622000223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5770b8be1378b548dda9b7056d2957b8127164e9b0a326dcb81c9654ccbdc46. 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/DEZ622000224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a1f686218acd82664556c5ea5456b091f3ac49268334bd44064a64f9613918. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:17:05Z), 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/DEZ622000225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfa2ded4cfbb0ddd023445bb8b3732c3328a85f2f4a1371d8d71f5135cc0a67. 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/DEZ622000226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d774e7848c1e946eefd2f9f6c963acb558e64881e5646313c11ba93660625b. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/DEZ622000227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dc26c80191d57c12dc7e751bcafc8b94d74e216a66c859a4b498a1406a8b0f. 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/DEZ622000228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc711374bfdc4122c4556fa4a687661779a88bdaeb67390907c012c56390efbb. 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/DEZ622000229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1736d7f5009bd1d6e6c1565eb1c2be6fd0c18bc184cb9e2521ace93fb126f7c7. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:46Z), 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/DEZ622000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8cb3d9fb2cd627a08c6c4a0920365bb69b68d2208fb82c7cd373d44c522619. 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/DEZ622000231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d83e230495c7caae69181540286b171a0ed433bd83b8c0d5b02d15e87f366ce. 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/DEZ622000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a37928878cfc574c235b130aad5978617b12bdb8b5e51f3e1f038362e884b7c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEZ622000233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec7419679f30f10d4bb91cb4bcb3a34aea81a956db52267a863dd1845422f1. 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/DEZ622000234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3530558da04abfa251525f83167ad82f58baa934cc8fdddb0db89b2d7d13930f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEZ622100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1537c80a7240be05fbdffc2fd6d870dd40ef9d25347f05e18516b5f4e53b899. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:10Z), 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/DEZ622100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223db56154bb3e1a6942fe6336cffd9ae5ad29c738b8536ba420e23642df7c2f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEZ622100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8f80ae8a5973a5a9a935e22773928e2b040c94a568af1610cf16c4761cdd1d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEZ622100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b3eec233b15677d635538c941cc36b2997e4f9bdb21491456253690d2eddac. 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/DEZ622100020.