> ## 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. # Transfers > Track movement of assets across major blockchain networks. # Transfers The Bridge Transfers table aggregates transaction-level bridge transfers across multiple blockchains indexed by Allium. We are actively improving bridge protocol & blockchain coverage and data completeness for the bridges vertical. ### Columns Unique key: `unique_id` | Column Name | Data Type | Description | | ----------------------- | ----------------- | ----------------------------------------------------------------------------------------------------------------------- | | bridge | VARCHAR | The slug or name of the bridge. For canonical bridges, the bridge name corresponds to the destination chain name. | | protocol | VARCHAR | The protocol associated with the bridge transfer. Optimism stack bridge events will share the same bridge protocol, op. | | contract\_address | VARCHAR | The contract address of the bridge. | | sender\_address | VARCHAR | The address that initiated the transfer. | | recipient\_address | VARCHAR | The address that received the transfer on the destination chain, if applicable. | | direction | VARCHAR | The direction of the transfer (e.g., inbound or outbound), based on the chain. | | source\_chain\_id | VARCHAR | The ID of the source chain. Note that for non-EVM chains, there is typically no chainID. | | source\_chain | VARCHAR | The name of the source chain, i.e. the chain on which a token was originally deployed and minted. | | destination\_chain\_id | VARCHAR | The ID of the destination chain. Note that for non-EVM chains, there is typically no chainID. | | destination\_chain | VARCHAR | The name of the destination chain, i.e. the chain on which a bridge user wants to have their tokens. | | token\_in\_address | VARCHAR | The address of the token being transferred. | | token\_in\_name | VARCHAR | The name of the token being transferred. | | token\_in\_symbol | VARCHAR | The symbol of the token being transferred. | | token\_in\_amount\_raw | VARCHAR | The raw amount of the token being transferred. | | token\_in\_amount\_str | VARCHAR | The string representation of the token amount being transferred. | | token\_in\_amount | FLOAT | The normalized amount of the token being transferred. | | usd\_in\_amount | FLOAT | The USD equivalent of the token being transferred. | | token\_out\_address | VARCHAR | (Nullable) The address of the token being transferred out. | | token\_out\_name | VARCHAR | (Nullable) The name of the token being transferred out. | | token\_out\_symbol | VARCHAR | (Nullable) The symbol of the token being transferred out. | | token\_out\_amount\_raw | VARCHAR | (Nullable) The raw amount of the token being transferred out. | | token\_out\_amount\_str | VARCHAR | (Nullable) The string representation of the token amount being transferred out. | | token\_out\_amount | FLOAT | (Nullable) The normalized amount of the token being transferred out. | | usd\_out\_amount | FLOAT | (Nullable) The USD equivalent of the token being transferred out. | | usd\_amount | FLOAT | The USD equivalent of the transfer, capped at a maximum value. | | extra\_fields | VARIANT | Additional fields related to the transfer. | | transaction\_digest | VARCHAR | The digest hash of the transaction (Sui-specific). | | transaction\_index | NUMBER | The index of the transaction within the checkpoint. | | event\_sequence | NUMBER | The sequence number of the event within the transaction (Sui-specific). | | checkpoint | NUMBER | The checkpoint number containing the transaction (Sui-specific). | | checkpoint\_timestamp | TIMESTAMP\_NTZ(9) | The timestamp of the checkpoint containing the transaction. | | checkpoint\_digest | VARCHAR | The digest of the checkpoint containing the transaction (Sui-specific). | | unique\_id | VARCHAR | A unique identifier for the transfer. | | \_created\_at | TIMESTAMP\_NTZ(9) | The timestamp when the record was created. | | \_updated\_at | TIMESTAMP\_NTZ(9) | The timestamp when the record was last updated. |