Transfer Type

Integer codes stored in transfer_type on blockdb_evm.b0304_token_transfers_v1, indicating how the transfer was produced on-chain.

Value	Name	Description
`0`	`native_tx`	Native ETH (or chain gas token) moved as the value field of a top-level transaction.
`1`	`native_internal`	Native ETH moved via an internal call (trace), e.g. a `CALL` with non-zero value inside a contract.
`2`	`erc20`	ERC-20 `Transfer` log event from a recognised fungible token contract.
`3`	`erc721`	ERC-721 `Transfer` log event from a recognised NFT contract.
`4`	`erc1155`	ERC-1155 `TransferSingle` or `TransferBatch` log event from a recognised multi-token contract.

Only transfers involving contracts identified as ERC-20, ERC-721, ERC-1155, or native ETH are emitted; unrecognised contracts are skipped.
A single transaction may produce rows with different transfer_type values (e.g. a native ETH send that also triggers an ERC-20 transfer internally).
trace_address is populated only for native_internal rows; log_index is populated only for erc20, erc721, and erc1155 rows.

Last modified on March 31, 2026