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Searchers are entities that identify MEV opportunities with "Originator" transactions and execute on these opportunities via bundles.
Searching on Blink is very similar to them mempool, searchers will max bid to the builder. Blink then takes a percentage of the fee paid to the builder via the optional bundle param fields "refundPercent" & "refundRecipient". See eth_sendBundle here for more details on these fields.

Next Steps

Searchers looking to connect to Blink's open marketplace on Ethereum will need to understand the following sections.
  • How to connect to Blink's websocket which exposes all transactions in the marketplace.
  • How to bid on a transaction, how the winning bid is selected and any bundle requirements.
  • How to query a bundle to see if your bid was successful.