thumb|upright=1.3|A steam turbine with the case opened thumb|Humming of a small pneumatic turbine used in a German 1940s-vintage safety lamp A turbine ( or ) (from the Greek , tyrbē, or Latin turbo,
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 0x0fd77d1ed2def5b8d9c5177bb987550433ebdefdef792335e93279856b2258aa. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fae4f37-a731-42d4-808a-50ffc9bd2e1c.json and https://artists.proofprofile.net/proofs/artist/5fae4f37-a731-42d4-808a-50ffc9bd2e1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).