thumb|Maria Sveland at the Gothenburg Book Fair in 2011. Maria Sveland (born 26 November 1974) is an author and journalist from Sweden, best known for the 2007 book Bitterfittan (a made up Swedish co
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 0x8e63ab9a0540eec851549f838271084f1699086c2d883507031603f600c23ecb. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0778b2dd-be26-4381-90a8-a7b03dccd7fe.json and https://artists.proofprofile.net/proofs/artist/0778b2dd-be26-4381-90a8-a7b03dccd7fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).