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 0xd70bed069356bdad83bea31a5a840c0f6eab78dbc73bccecd3f4083fdca48fd6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f559b233-8704-45ed-8da0-28ffb357d6cb.json and https://artists.proofprofile.net/proofs/artist/f559b233-8704-45ed-8da0-28ffb357d6cb.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 0x5a701714e08059037623d843c585181a4fa542f432e44f759081d52c2741618d. 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/DEM480800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84194ade74880c587fa16a7a616341967a98cd11173bef2b8b67ee0347ce4408. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEM480800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ae3aad7e8365e6dcbb6a8b111d2ffe2d2bdfe36181372be09d4b682f985b13. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEM481200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b70cf4e2cad76a33da17732689e458dbea113fac109c2fc12f6f2212fe95d8b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:25Z), 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/DEM481200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196fef3fa27f6bedfd0f1126f8183d2eb92b412399f4d328dc7d4e72a26fd2e3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:42:40Z), 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/DEM481200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece6cf703dc054f6f3ddcd9d82a063eb9f2a9887f17011f9f9384f903aac3b5c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DELX92000001.