alt=|thumb|upright=1.5|Cloudscape over Borneo, taken by the International Space Station In meteorology, a cloud is an aerosol consisting of a visible mass of miniature liquid droplets, ice crystals,
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 0xa9f804b18f925a6bb531bf8f880feb292a6c5d48e1d84e454b1df6e6c0609844. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72f8c088-f9d7-4011-91c4-4a14d2c5d929.json and https://artists.proofprofile.net/proofs/artist/72f8c088-f9d7-4011-91c4-4a14d2c5d929.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).