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 0xfa554203ea3e463427510c76a809023e1f684a0eb06d359d301b5961b96d5630. 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/dc772b83-015c-4286-ad36-b3c1daff7e85.json and https://artists.proofprofile.net/proofs/artist/dc772b83-015c-4286-ad36-b3c1daff7e85.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 0x507eb6357fc7e4ade00dd7a74a314146545c994ee8058e9f9505a657109baeda. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/SEYOK1224705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edca81d9da4655b85c397163dc2be167e8996371c0aeca97961eac7b834910d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEYOK1224708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591a0e5ba9e30294cdc4cb1e60eba9da993cb773452aee12d9d16168edab2025. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SEYOK1310756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b7c64f8971c1dfb749eb7b57150aafd615faaf875572ac9d594e6badb085ef. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/SEYOK1310757.
Checka Vår Teknik (med Marc UÅ & Academics)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d391eeca26425b1666ff7e791cc390b9ee67d1ab9a0934c94c6653e0f3fb7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:20Z), 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/SEYOK1310761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf038b4cdca87017b619fbe3f4e557b4fa54ca24e632df6f01f432445e617f0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEYOK1310762.