Tõnis Mägi (born 18 November 1948) is an Estonian singer, guitarist, composer and actor. He is one of the most influential and remarkable names in Estonian rock music of the past 40 years. More recent
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 0x7cf680c4170684dd9c129471a030a5c8409b03fc819bb721017fb874fb0e332e. 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/485ddbc5-8e9e-420a-a0c9-f205d0dce10e.json and https://artists.proofprofile.net/proofs/artist/485ddbc5-8e9e-420a-a0c9-f205d0dce10e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).