L'Orage (The Thunderstorm) is a circa 1830 Romantic landscape painting by the French painter Georges Michel, depicting a thunderstorm gathering over Montmartre (then a village on the outskirts of Pari
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 0x87af5e77657b3d2bf99e3614b232e9787daf25955ba5999837293e721742caf9. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3c5c94d-6418-4fd6-b99d-97c490fefb48.json and https://artists.proofprofile.net/proofs/artist/e3c5c94d-6418-4fd6-b99d-97c490fefb48.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 0x86dc08d9a4a4a85d435defe6f5607805f0e1df4e7aebf5de4058554f3eb3c9b7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/CHA352400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa503254b40f304749a98e8957785fb5358a78b9aaabc38fe18c74cc2579c7be7. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:45Z), 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/CHA352400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86866cbda58ead8d3b15a1b85d2a1f85ba62e28b5e2a5c38296cea43d73b29d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/CHA352400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98778f13dca089a8e68d2a63a6ed255d0fca6281512058a006917031272839c4. 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/CHA352400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b497724ba8b6cd56db61396a82ec124ac1ed11bd0d401f88b28ac45349df57. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CHA352400011.