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 0x62160723f9695f73adf55e52f5b0fb22abfe3410bc17b4d9c78396c8ea348d65. 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/87d0a3fa-e189-4766-b8b0-a7ab76879f4d.json and https://artists.proofprofile.net/proofs/artist/87d0a3fa-e189-4766-b8b0-a7ab76879f4d.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 0x930efe76a3a0fc47af06d51785153d137072f3e84e01b817b779528303b195f5. 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/DKELA1400901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9095e36216e98c57962872e4b7e8ef222e6a725b5d210d6347797913c8acdd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:04Z), 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/DKELA1400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa621a1bd3af5014b31da151652074c889d1ac85608e720cc2b842a2303eafba1. 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/DKELA1400908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb165dc12136fa9ba49267a1bdd23271c572ca1ca5d929c5e599537e34fda6d5. 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/DKELA1600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d333f465b8ac427872c3a12bcdd194fca6f80ca7c000519d14eadb570ee7aa. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DKELA1700902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b4486e77a93c7538080a0922386109b34d54f34deff2e215b1286545a38feb. 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/DKELA1700906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd110cbc4ce6b0fdd71d73eef3d7c59f155462311b029330e3419c9bdc74d7e75. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/DKELA1700908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42517ca9f62958b6afcae498cde9a976ad2fe663dcad476d4aabb8ed8187c3fe. 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/DKELA1700909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3312d8f4998f114a1a21787916a63fe84c78bafa0fe239bc2b7a394406a3d9. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DKELA1700910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d02f665efbe64805ee46b0e969b032d8801084a1c98e2f2c08715824d3d7e28. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DKELA1700912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22300f38e37c00142860fcf845b73797ef57e04fdcef22c0ab4973f5fe0932. 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/DKELA1900401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e897cb5d528628a30085c228f7be93b153eef64acffeb547d544bfb924b5c4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:47:27Z), 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/DKELA1900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d3932ab1ca34b0306ed2a430ff182f7a762d3b3e58da5294e03a62516d1237. 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/DKELA1900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66928711faec1fe1018461682668da7c9decf2cebd85160cbe1edb4a68562720. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:32Z), 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/DKELA1900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1872bcf115e22ff2e67f1ec80bc490a370442733bc2b690bb496c3eb95ad0a. 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/DKKG22100504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be96924d0872b38729628155fa8a23b3de9ae17b91e7e253d34995461d4d174. 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/DKKG22100509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823f14cf80ed9b7c80da19d05295859342681772bd323623410920c02e745097. 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/DKKG22500103.