thumb|Jaan Tätte at Leigo Lake Music Festival in 2007. Jaan Tätte (born 24 March 1964 in Viljandi) is an Estonian playwright, poet, actor, and singer. Biography From 1982 to 1984 Tätte studied biolog
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 0x241db5932b492e99562f16608a18e9c1ea44d8b3eac49133ec89ec9dc151d669. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e4ecf80-913f-42d0-acf2-f2ba5ddaa1ee.json and https://artists.proofprofile.net/proofs/artist/5e4ecf80-913f-42d0-acf2-f2ba5ddaa1ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).