| # 📄 Database Structure: `contracts` Table |
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| This document describes the structure and purpose of the `contracts` table within the databases. |
| The table stores metadata and deployment details of smart contracts. |
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| ## 📌 Table Description |
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| Each record stored in the table has the following structure and fields, with described constraints. |
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| | Column Name | Type | Constraints | Description - | |
| |---------------------|------------|---------------------|-----------------------------------------------------------------------------| |
| | `address` | TEXT | PRIMARY KEY | The unique address of the smart contract on the blockchain. | |
| | `creator` | TEXT | NOT NULL | The address of the account that deployed the contract. | |
| | `creation_tx` | TEXT | NOT NULL | The transaction hash that created the contract. | |
| | `creation_time` | TIMESTAMP | NOT NULL | The timestamp when the contract was deployed. | |
| | `creation_block` | INTEGER | NOT NULL | The block number in which the contract was created. | |
| | `name` | TEXT | NULLABLE | The human-readable name of the contract, if available. | |
| | `source_code` | TEXT | NULLABLE | The full Solidity source code of the contract. | |
| | `abi` | TEXT | NULLABLE | The Application Binary Interface (ABI) of the contract. | |
| | `compiler_version` | TEXT | NULLABLE | The Solidity compiler version used to compile the contract. | |
| | `evm_version` | TEXT | NULLABLE | The targeted Ethereum Virtual Machine (EVM) version. | |
| | `optimization_used` | BOOLEAN | NULLABLE | Indicates whether compiler optimizations were enabled. | |
| | `runs` | INTEGER | NULLABLE | Number of optimization runs used during compilation. | |
| | `constructor_args` | TEXT | NULLABLE | Encoded constructor arguments passed during deployment. | |
| | `library` | TEXT | NULLABLE | Linked library information, if any. | |
| | `license` | TEXT | NULLABLE | License type of the source code (e.g., MIT, GPL-3.0). | |
| | `is_proxy` | BOOLEAN | NULLABLE | Flag indicating whether the contract is a proxy. | |
| | `implementation` | TEXT | NULLABLE | Address of the implementation contract, if this is a proxy. | |
| | `swarm_source` | TEXT | NULLABLE | Swarm hash / metadata URL pointing to the source code bundle. | |
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| 📝 Notes: |
| - The **primary key** `address` ensures uniqueness for each deployed contract in the corresponding chain. |
| - `creation_tx`, `creation_time`, and `creation_block` stores contract’s deployment information, i.e. transaction id, timestamp, and block number. |
| - `source_code`, `abi`, and `compiler_version` are typically available when the contract has been verified. |
| - Proxy patterns are identified through `is_proxy` and `implementation`. |
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| ## 🧱 Table Definition |
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| ```sql |
| CREATE TABLE IF NOT EXISTS contracts ( |
| address TEXT PRIMARY KEY, |
| creator TEXT NOT NULL, |
| creation_tx TEXT NOT NULL, |
| creation_time TIMESTAMP NOT NULL, |
| creation_block INTEGER NOT NULL, |
| name TEXT, |
| source_code TEXT, |
| abi TEXT, |
| compiler_version TEXT, |
| evm_version TEXT, |
| optimization_used BOOLEAN, |
| runs INTEGER, |
| constructor_args TEXT, |
| library TEXT, |
| license TEXT, |
| is_proxy BOOLEAN, |
| implementation TEXT, |
| swarm_source TEXT |
| ); |
| ``` |
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| ## 🧭 Usage Example |
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| ```sql |
| SELECT address, name, compiler_version, source_code |
| FROM contracts |
| WHERE source_code IS NOT NULL AND source_code != "" |
| ORDER BY creation_block DESC |
| LIMIT 10; |
| ``` |
| This query returns the 10 most recently deployed contracts with available **source code** along with their addresses, names and compiler versions. |
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| --- |
| license: mit |
| --- |
