> For the complete documentation index, see [llms.txt](https://documents.geb.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documents.geb.network/learn/bitagere-guide/executor-reference-concepts.md).

# Executor Reference Concepts

### **Executor Basic Concepts:**

#### **Core Responsibilities**

* Identify and submit GEB-related Bitcoin transactions to the network
* Increase transaction processing priority by paying gas fees
* Bear the risk of transaction failure (gas fees must still be paid for unsuccessful transactions)

**Incentive Mechanism**

* **Revenue Source:** Number of successfully submitted and verified valid transactions × reward coefficient per transaction
* **Gas Strategy:** Paying higher gas can increase transaction ordering priority, but costs and benefits must be balanced
* **Zero-sum Competition:** For identical transactions within the same block, only the first high-gas transaction receives rewards, other executors' gas payments are non-refundable

### Executor performance concepts:

**Trust:**

* **Meaning:** Trust represents a score reflecting the confidence in an executor's behavior audited by auditors. Its full name is Executor Trust.
* **Calculation:** Weighted average according to the stake value of the auditor.
* **Troubleshooting:** If this value deviates significantly from 1, observation is needed. If it decreases, check for updates in the corresponding `agere` codebase, run with more tips and remove `time.sleep`  in miner.py, and verify the health of your VPS network and scripts.

**Incentives:**

* **Meaning:** Represents the proportion of earnings an executor receives. The sum of all executor incentives equals 1.
* **Calculation:** It's calculated by the difference of Trust.