Shannon Leto (; born March 9, 1970) is an American musician best known as the drummer of rock band Thirty Seconds to Mars. He co-founded the group in 1998 in Los Angeles, California, with his younger
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 0xfca60e24335e9540fe08a129c8d7ab6c4fad02d9c1e501ae6b8b87d901d51cea. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b4cac60-cc69-4f26-8f3b-40bd980b0b65.json and https://artists.proofprofile.net/proofs/artist/5b4cac60-cc69-4f26-8f3b-40bd980b0b65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).