thumb|Harmattan Haze in Abuja thumb|right|Haze over the Mojave Desert from a brush fire in Santa Barbara, California, seen as the Sun descends on the 2016 June solstice, allows the Sun to be photograp
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 0x092001120abb22a404cf7bf5e5d1d3240cdff7beb2942026e5e2d95bf7da48c2. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6cd429e-baad-44e5-9668-4cc8a8d5033d.json and https://artists.proofprofile.net/proofs/artist/d6cd429e-baad-44e5-9668-4cc8a8d5033d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
When The Sun Fell Out Of The Sky (Radio Edit)