What Is the Primary Difference between a Private Transaction and a Regular Mempool Transaction?
A regular mempool transaction is broadcast to the public network, where it sits in a transparent waiting pool for all nodes and bots to see before a validator includes it in a block. A private transaction is sent directly to a trusted party, such as a Flashbots relay or a private mempool service, bypassing the public waiting area entirely.
The private transaction is only revealed to the validator who includes it in the block, shielding it from front-running bots.
Glossar
Regular Mempool Transaction
Propagation ⎊ A regular mempool transaction represents an unconfirmed transfer of value within a cryptocurrency network, awaiting inclusion in a block; its initiation involves broadcasting transaction data to nodes, initiating a period of network-wide dissemination and validation before potential confirmation.
Private Transaction
Privacy ⎊ A Private Transaction is a cryptographic operation submitted directly to a block builder or validator, bypassing the public mempool where pending transactions are typically exposed to all network participants.
Private Mempool
Propagation ⎊ The private mempool represents a localized, unconfirmed transaction pool maintained by individual nodes within a cryptocurrency network, distinct from the globally broadcasted public mempool.
Flashbots Relay
Relay ⎊ A specialized infrastructure component that aggregates transaction bundles from searchers and forwards them to block builders, acting as a critical intermediary in the MEV supply chain.