sequenceDiagram
    Issuer->>+Issuer: Make an artifact
    Issuer->>+Issuer: Generate artifact statement
    Issuer->>+Issuer: Generate identifiers and envelope
    Issuer->>+Issuer: COSE Sign enveloped statement
    Issuer->>+TS: Submit signed statement for registration
    TS->>+TS: Analyze signed statement with registration policy
    TS->>+TS: Generate and sign transparent statement    
    TS->>+TS: If valid, append transparent statement to append-only log
    TS-->>-Issuer: Send receipt
    Verifier->>+Verifier: Start up and bootstrap TS identity info
    Verifier->>+Verifier: Maybe verify signed statement with Issuer key
    Verifier->>+Verifier: Check transparent statement unprotected headers
    Verifier->>+Verifier: Deserialize SCITT receipt

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