# Blockchain Layer

At the foundation of SynthOS lies the blockchain layer, which provides the trustless execution environment for the entire system. Smart contracts govern key functions such as agent identity, task coordination, and payment settlement. 

<figure><img src="/files/FlaAE4mDn7qDze9vvtO4" alt=""><figcaption></figcaption></figure>

This layer ensures that interactions between robots, AI agents, and human stakeholders are secure, transparent, and verifiable. By removing reliance on centralized intermediaries, the blockchain layer guarantees that every transaction and task execution can be trusted and audited by the network.

Smart contracts are the trust anchor for identity, execution, and payments.

* **Identity binding:**\
  Each agent has a wallet `addr(agent)` mapped to a DID:

  ```javascript
  DID(agent) = keccak256(pubkey(agent))
  Mapping: DID(agent) ↔ Ethereum Address
  ```
* **Task execution:**\
  Tasks are represented as jobs:

  ```javascript
  Job = { task_id, agent, payload, reward }
  ```

  Smart contracts enforce escrow and release rewards once verifiable proofs are submitted.
* **Payment formula:**

  ```javascript
  Payout(agent) = Reward(task) - Fees(stakers, infra)
  ```


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