# Blast

- **Chain ID:** `81457`
- **Tier:** docs-only
- **Contracts:** 7
- **Docs:** https://docs.blast.io/building/contracts

Blast's core bridge and token contracts on the L2.

> Indexed source, ABI, and contract references.

## Query via AI agent

- **MCP endpoint:** `https://smarts.md/mcp`
- **Reference:** `chains/blast`
- **Sample prompt:** "Show me the supported contracts on Blast and summarize the highest-signal ones."

## Contract breakdown

- **Bridge:** 4
- **Token:** 2
- **Infra:** 1

## Contracts

- **L2StandardBridge** (`Bridge`) - `0x4200000000000000000000000000000000000010`
- **L2BlastBridge** (`Bridge`) - `0x4300000000000000000000000000000000000005`
- **L2ERC721Bridge** (`Bridge`) - `0x4200000000000000000000000000000000000014`
- **L2CrossDomainMessenger** (`Bridge`) - `0x4200000000000000000000000000000000000007`
- **OptimismMintableERC20Factory** (`Infra`) - `0x4200000000000000000000000000000000000012`
- **WETH** (`Token`) - `0x4300000000000000000000000000000000000004`
- **USDB** (`Token`) - `0x4300000000000000000000000000000000000003`

## Links

- Canonical page: <https://smarts.md/tw/chains/blast>
- External docs: https://docs.blast.io/building/contracts