Zachary David Sobiech (May 3, 1995 – May 20, 2013) was an American singer-songwriter and musician, best known for his single "Clouds", which gained extensive media attention on YouTube, prior to Sobie
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 0x12461d59db07ab20ad925888bb9fea75c1a0e35b894461264c0e6b8f44dc8d89. 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/725e5d43-6727-4b28-b8aa-de2ed48bcb00.json and https://artists.proofprofile.net/proofs/artist/725e5d43-6727-4b28-b8aa-de2ed48bcb00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clouds (Largest Clouds Choir Holiday Version)