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 0xdfa3804b79df873e8dc5f3db023ba6c71881965d808208e05aacf57654110bca. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28737c9b-a6ba-4493-99a3-2edeb44955b5.json and https://artists.proofprofile.net/proofs/artist/28737c9b-a6ba-4493-99a3-2edeb44955b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
(THE MAGICIAN OF MY REALITY) LEAPYEAR ALBUM
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 0x271cd608607bd7c8f6e1b53ad2356fa2741e5f3e6801d75f9c5e069844294c1c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:09Z), 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/QT3F22414716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd754994a4f00d45a8fe116850aac1eed42ed92c16c4ed667d3fd96d8b347fd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:58:16Z), 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/QT3FE2587426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41afb96e3666984d078d2a46aeaf9441307f7dcb85d1b642e5ec3878307c4707. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QT6EA2578557.