thumb|Ashkenazi-style shofar. The shofar is used during the High Holy Days. In Judaism, the High Holy Days, also known as High Holidays or Days of Awe (Yamim Noraim; , Yāmīm Nōrāʾīm) consist of: stric
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 0x3a96b2458e9de642e68d2d1cdc7fe9d69ea6a7676c0b0b8141eea66af7e95309. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/962a85ca-bac3-42b3-b361-0054797724e0.json and https://artists.proofprofile.net/proofs/artist/962a85ca-bac3-42b3-b361-0054797724e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).