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 0x2429731e6c181ad349c1f43e4b1216ec5b7ef76230e22b0f746bcf299b794fc5. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb9321e3-2b2c-4839-92a0-0e0f2ef04df2.json and https://artists.proofprofile.net/proofs/artist/eb9321e3-2b2c-4839-92a0-0e0f2ef04df2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zauberberg No. 4 (Gleißend Wie Der Mond Beim Gang Durch's Tal)
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 0x1de10131540879dd6ff9c7ae0443ad93b40ada52754cd79827367ed03092e238. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:25:03Z), 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/DED992400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63260ad65ce604ddb2a3326edadd7b79315701a837d15c77f31458b03126d8a4. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DED992400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4654fd3ecdd0815679af869d3401412a01b2dae5cdc7c11afb02ef9bb0129b3. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/DED992400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bf9a564a30d4e6d2064297bd91e051ac5ee7b0178f13c0eb4d7c4a6b68d0a7. 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/DED992400282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee48aa9124dc6f9f3de88527dc56244fbe5ad92caafccaddbb5529cde919512d. 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/DED992500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b70f4fd75a0f8ec46c8b168e3d4a2b1c9f4d3074c23233111860afee7588838. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:29Z), 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/DED992500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1877d89a7a5bbf6fb1e60a7c8101fade6ea7c073db23d06152d390952c8f788. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DED992500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b94a21cf57805abf68b5dd1709cc747a63e7ac0083b307e17b07724654f0a3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:49Z), 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/DED992500142.