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Architecture Overview

The 555 Ecosystem is a complex interplay of an-chain and off-chain components. System Blueprint

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The Full Stack

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Data Flow: The “Kill Enemy” Event

Trace a single user action through the system:
  1. Client: User kills an enemy in Sector 13.
  2. Game Engine: Emits { type: "ENEMY_KILL", id: "mob_01", score: 100 }.
  3. VAP SDK: Hashes this event into the current InputBlock.
  4. VAP SDK: Signs the block with the Session Key.
  5. WebSocket: Sends PULSE packet to VAP Verifier.
  6. Verifier:
    • Verifies Signature.
    • Checks Nonce sequence.
    • Updates SessionState in Redis (score += 100).
  7. Persistence: Every 60 seconds, Redis state is flushed to Postgres.
  8. Settlement: When the session ends, Verifier submits settle_session to Solana.
  9. Blockchain:
    • vap_escrow transfers 100 $555 to User.
    • bubblegum mints “Session Log” cNFT to Creator.