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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486d7e3a36e68d715faf278814e9c0a0b82cec5380bcbaa833f9de6d9764828b. 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/ae71dfcc-fbd7-4f7a-8d69-dd5bcf4e2268.json and https://artists.proofprofile.net/proofs/artist/ae71dfcc-fbd7-4f7a-8d69-dd5bcf4e2268.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jerry Cotton, Folge 2: Countdown (Cotton Reloaded)
Jerry Cotton, Folge 6: Leichensee (Cotton Reloaded)
Jerry Cotton, Folge 8: Killer Apps (Cotton Reloaded)
Jerry Cotton, Folge 10: Projekt Omega (Cotton Reloaded)
Jerry Cotton, Folge 12: Survival (Cotton Reloaded)
Jerry Cotton, Folge 15: Tödliche Bescherung (Cotton Reloaded)
Jerry Cotton, Folge 17: Die Stadt der Toten (Cotton Reloaded)
Jerry Cotton, Folge 23: Die Unsterblichen (Cotton Reloaded)
Jerry Cotton, Cotton Reloaded, Folge 27: Stumme Zeugin
Jerry Cotton, Folge 29: Heimkehr in den Tod (Cotton Reloaded)
Cotton FBI, Episode 2: Countdown (NYC Crime Series)
Jerry Cotton, Cotton Reloaded, Folge 30: Tatort: London (Jubiläumsausgabe)
Cotton Reloaded, Folge 39: Stille Nacht, stillere Nacht
Cotton Reloaded, Folge 45: Nirgendwo in New Mexico
Jerry Cotton, Cotton Reloaded, Folge 49: Killing in Memphis