> ## Documentation Index
> Fetch the complete documentation index at: https://docs.allium.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Track cross-chain asset movements and messages across 17+ blockchains with protocol-level precision.

Allium's bridges vertical covers three categories of cross-chain protocols, each with dedicated inbound and outbound tables unified across all supported chains.

## Protocol Categories

### Bridges

Application bridges that use their own liquidity or locking mechanisms to move assets between chains. Each transfer involves a token deposit on the source chain and a corresponding release or mint on the destination chain.

**Protocols covered:** Across (v2, v3), DeBridge (DLN + Gate), Gas Zip, Mayan (MCTP, Swift), Rhino, Stargate (v2), USDT0

### Messaging Protocols

General-purpose cross-chain communication layers that enable both token transfers and arbitrary message passing. Transfers are modeled as messages with optional token payloads.

**Protocols covered:** Axelar, Chainlink CCIP, Circle CCTP (v1, v2), Hyperlane, LayerZero (v2), Socket DL, Wormhole

### Bridge Aggregators

Routing protocols that aggregate across multiple underlying bridges to find optimal routes. Aggregator data is kept in separate tables to prevent double-counting when an aggregator interaction also emits a transfer from the underlying bridge.

**Protocols covered:** Bungee, Jumper, LiFi

## Blockchain Coverage

| **Category**        | **Chains**                                                                                                                                                                |
| ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Bridges             | Abstract, Arbitrum, Avalanche, Base, BSC, Ethereum, HyperEVM, Ink, Katana, Mantle, Optimism, Plasma, Polygon, Scroll, SEI, Unichain, WorldChain, Solana, Tron             |
| Messaging Protocols | Abstract, Arbitrum, Avalanche, Base, BSC, Ethereum, HyperEVM, Ink, Katana, Mantle, Optimism, Plasma, Polygon, Scroll, SEI, Unichain, WorldChain, Aptos, Solana, Sui, Tron |
| Bridge Aggregators  | Abstract, Arbitrum, Avalanche, Base, BSC, Ethereum, HyperEVM, Ink, Katana, Mantle, Optimism, Plasma, Polygon, Scroll, SEI, Unichain, WorldChain, Solana                   |

## Crosschain Tables

The crosschain views aggregate all chain-level bridge data into unified tables for easy cross-chain analysis. See the schema reference for each category:

<CardGroup cols={3}>
  <Card title="Bridges" icon="bridge" href="/historical-data/bridges/crosschain/bridge-transfers">
    Inbound and outbound transfers for application bridges (Across, DeBridge, Stargate, etc.)
  </Card>

  <Card title="Bridge Aggregators" icon="shuffle" href="/historical-data/bridges/crosschain/bridge-aggregator-transfers">
    Inbound and outbound transfers routed through aggregators (Bungee, Jumper, LiFi)
  </Card>

  <Card title="Messaging Protocols" icon="message-lines" href="/historical-data/bridges/crosschain/messaging-protocol-messages">
    Inbound and outbound messages from cross-chain communication layers (LayerZero, Wormhole, CCTP, etc.)
  </Card>
</CardGroup>

## Legacy Table

The `crosschain.bridges.transfers` table provides a unified, deduplication-safe view of bridge activity using a net-single-directional approach. See [Wormhole](/historical-data/bridges/wormhole) for the Wormhole-specific transfers table.

<Info>
  We are actively expanding bridge protocol and blockchain coverage. The new per-category inbound/outbound tables above supersede the legacy `crosschain.bridges.transfers` model for protocol-level analysis.
</Info>