Matthias Schranner (born 4 January 1964) is a consultant and ex-hostage negotiator, who worked for the German police. He is CEO and founder of the Schranner Negotiation Institute in Switzerland, and o
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 0x80f4f866e363516aca4b536b5393b2ee9930240d867f0d979a61471c5a00ce40. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab609b14-2af5-4136-9126-29cc7ac09f8b.json and https://artists.proofprofile.net/proofs/artist/ab609b14-2af5-4136-9126-29cc7ac09f8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Teure Fehler (Die 7 größten Irrtürmer in schwierigen Verhandlungen)
Verhandeln im Grenzbereich - Strategien und Taktiken für schwierige Fälle (Ungekürzt)