thumb|A homemade cherry pie with a lattice top crust Cherry pie is a pie baked with a cherry filling. Traditionally, it is made with sour cherries rather than sweet cherries. Morello cherries are one
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 0x415b15728117a34f243d9812fd47dc9e7b84c799d812a1f8319d85d91f708684. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3eb11d4-cd12-4179-b427-ca436ee2251f.json and https://artists.proofprofile.net/proofs/artist/a3eb11d4-cd12-4179-b427-ca436ee2251f.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 0x906b02d136a901ed2466d9a822052649001a9ade3582b23645ee6f67b68d88b8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:16:46Z), 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/QZNWV2421869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb677ede9643adc5d29264dbd0c29bb84f47b247af27e6ae5529f3dfd73a41082. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWV2421870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c353c95b0cfb1400e2c480cd2767c03a3a923e03de887791b45852a19859624. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:49Z), 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/QZNWV2421871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e92922056cbd974062d90cb81baaee3f680aaa0d388e2fe2be26b11f9d001a. 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/FR9W12537810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295958971046af6f1c4a7d926f849854cc7dd393bd9f8744c5608bafbf36fa83. 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/FR9W12548934.