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 0x037440cbfb7f986425dfd2c535489e13c5cb15a57358ca7b24e7fba0407ef9c5. 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/40c90a51-9399-4f68-90dc-6e054071703a.json and https://artists.proofprofile.net/proofs/artist/40c90a51-9399-4f68-90dc-6e054071703a.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 0xfa1763f3b32b7400df40fcfa1d72e430318c1bcff3c0b516d7c7e97f77442d46. 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/DEH742407060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e30dae7100a788bbbe61a7c0de3281e19616bbbd30d82840bb1b309c2ecfc6d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEH742407061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8821a290f221102507efbb1721f791972c6ab6699a84b5484513ddc631d3c85e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEH742407062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc182279c2c04f061aa96c271977245df8bf4214fc3c7e5d42f66bb5eb2fb9435. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEH742409520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a257be58fe89fab899b39051bbe9f5e2e12de60a9db65fddfb8882c0eb9e1c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SEYOK2429930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa12de5c4c538626049032866500c2aa644c77161d54dbe7252f1d4d0871813. 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/DEH742435228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6686a03e1a3a7c75f9ad28c59afe24da0a15324a1993b2b0e8e6f856ba391c3c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:43:32Z), 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/DEH742435229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae180e67c1fd1a149344164ff63d796d4f058fbd5a03c5657d5b5b2bbb445e17. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/DEH742418102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf60b22de783c86fcfa6aee3cab4e31f68f591e5d1dca744d726ca8a562bc0b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42404624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0950352cb17e649656b646260311ac1314dbe5e94a21603aee1aa94206fca3e5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS652305763.