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 0xd7d09dfbc54316626e337386b4012667454cb9f5e3915a72e60d7c576a2cabe3. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2d7fff1-d6b7-42a0-b088-bd1b1cc50251.json and https://artists.proofprofile.net/proofs/artist/e2d7fff1-d6b7-42a0-b088-bd1b1cc50251.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everybody's Jealous -Mixture with Canon in D-
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 0x74b75b38f3286cee56434877a693ff5e5ad3d2b63205b45eb580ba64cf9fe2e8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPSR09908002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf96f76af120ac1fe8554e35766a3adc2e1887c22e2a58763429c5fc18cd90db. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:21:42Z), 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/JPSR09912745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070adf2f7028dc78c177d40a9ecef3d371904eac7bddd82e3aa053f99c924404. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:36Z), 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/JPSR09902322.
PRECIOUS MOMENTS -WHEN WILL I SEE YOU AGAIN- (tk mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590312fda54a847893dd252b97a5979cac5881fa1299937890061eb85b27252d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPSR09913430.