# Searchers **URL:** https://collective.flashbots.net/c/searchers/12.md?page=2 [Latest](https://collective.flashbots.net/latest.md) · [Categories](https://collective.flashbots.net/categories.md) · [Tags](https://collective.flashbots.net/tags.md) **Page:** 3 --- ## [Coinbase transfers vs effective gas price help](https://collective.flashbots.net/t/coinbase-transfers-vs-effective-gas-price-help/988)
**Author:** [@dniks](https://collective.flashbots.net/u/dniks)\ **Replies:** 0\ **Last updated:** [January 5, 2023, 3:18pm UTC](https://collective.flashbots.net/t/coinbase-transfers-vs-effective-gas-price-help/988 "2023-01-05T15:18:56Z")
Hello guys, I’m little bit confused how coinbase transfers will impact on effective gas price or max priority fee… could you please help me? Let’s take this example… My competitor adds 100 gwei max priority, resulting … --- ## [Protect against uncle bandits](https://collective.flashbots.net/t/protect-against-uncle-bandits/772)
**Author:** [@krypston](https://collective.flashbots.net/u/krypston)\ **Replies:** 4\ **Last updated:** [December 15, 2022, 3:56pm UTC](https://collective.flashbots.net/t/protect-against-uncle-bandits/772 "2022-12-15T15:56:06Z")
In your docs it is stated that in order the get protection against uncled blocks, the following check should be included in the smart contratc function or transaction: require(blockhash(block.number - 1) == expectedPare… --- ## [Flashbots Bundle Relay API Upgrades](https://collective.flashbots.net/t/flashbots-bundle-relay-api-upgrades/896)
**Author:** [@angelfish](https://collective.flashbots.net/u/angelfish)\ **Replies:** 0\ **Last updated:** [December 7, 2022, 8:22pm UTC](https://collective.flashbots.net/t/flashbots-bundle-relay-api-upgrades/896 "2022-12-07T20:22:22Z")
We have a few important upgrades coming to the Flashbots Bundle Relay API! new methods with PoS related fields: flashbots\_getBundleStatsV2 and flashbots\_getUserStatsV2 bundle cancellations switch from HTTP to JSON-RPC s… --- ## [How do I get FLASHBOTS\_AUTH\_KEY?](https://collective.flashbots.net/t/how-do-i-get-flashbots-auth-key/587)
**Author:** [@0xgoku](https://collective.flashbots.net/u/0xgoku)\ **Replies:** 3\ **Last updated:** [November 22, 2022, 2:07am UTC](https://collective.flashbots.net/t/how-do-i-get-flashbots-auth-key/587 "2022-11-22T02:07:31Z")
I’m looking at subway/bot at master · libevm/subway · GitHub and I’m trying to figure out how do I get FLASHBOTS\_AUTH\_KEY that’s defined in the environment variable? I also checked GitHub - flashbots/simple-arbitrage: E… --- ## [getBundleStats has new POS related fields!](https://collective.flashbots.net/t/getbundlestats-has-new-pos-related-fields/741)
**Author:** [@angelfish](https://collective.flashbots.net/u/angelfish)\ **Replies:** 0\ **Last updated:** [November 16, 2022, 6:37pm UTC](https://collective.flashbots.net/t/getbundlestats-has-new-pos-related-fields/741 "2022-11-16T18:37:34Z")
We are updating the flashbots\_getBundleStats JSON-RPC method to include two new fields that are relevant in POS: consideredByBuildersAt contains timestamps indicating when a builder considered the bundle for the targe… --- ## [Bundle cancellations testing](https://collective.flashbots.net/t/bundle-cancellations-testing/605)
**Author:** [@mateusz](https://collective.flashbots.net/u/mateusz)\ **Replies:** 16\ **Last updated:** [November 10, 2022, 9:56am UTC](https://collective.flashbots.net/t/bundle-cancellations-testing/605 "2022-11-10T09:56:21Z")
We are now testing a frequently requested feature - bundle cancellations! Bundles can be cancelled explicitly through a new method - eth\_cancelBundle, or they can be replaced via eth\_sendBundle. If you wish to be able … --- ## [eth\_cancelPrivateTransaction not working](https://collective.flashbots.net/t/eth-cancelprivatetransaction-not-working/629)
**Author:** [@travis](https://collective.flashbots.net/u/travis)\ **Replies:** 1\ **Last updated:** [November 1, 2022, 4:43pm UTC](https://collective.flashbots.net/t/eth-cancelprivatetransaction-not-working/629 "2022-11-01T16:43:30Z")
self.w3.flashbots.cancel\_private\_transaction(tx\_hash) ==\> 502 Server Error: Bad Gateway for url: https://relay.flashbots.net/ --- ## [Quesitons about Flashbots getConflictingBundle function](https://collective.flashbots.net/t/quesitons-about-flashbots-getconflictingbundle-function/674)
**Author:** [@PB](https://collective.flashbots.net/u/PB)\ **Replies:** 0\ **Last updated:** [November 1, 2022, 1:26pm UTC](https://collective.flashbots.net/t/quesitons-about-flashbots-getconflictingbundle-function/674 "2022-11-01T13:26:33Z")
From my testing, getConflictingBundle only returns information on one bundle. Does getConflictingBundle only return one bundle, and if so which one if more than one conflicts? Does it get the last bundle that was include… --- ## [Error: 'out of gas' in simulation result](https://collective.flashbots.net/t/error-out-of-gas-in-simulation-result/667)
**Author:** [@PB](https://collective.flashbots.net/u/PB)\ **Replies:** 0\ **Last updated:** [October 31, 2022, 3:59pm UTC](https://collective.flashbots.net/t/error-out-of-gas-in-simulation-result/667 "2022-10-31T15:59:22Z")
When I sign and then simulate a transaction bundle, sometimes it will return the expected result with a gas used amount, while other times I would get a simulation error and it would have in the firstRevert field: error:… --- ## [Bundle scoring post merge](https://collective.flashbots.net/t/bundle-scoring-post-merge/660)
**Author:** [@Eru\_Iluvatar](https://collective.flashbots.net/u/Eru_Iluvatar)\ **Replies:** 0\ **Last updated:** [October 31, 2022, 1:47pm UTC](https://collective.flashbots.net/t/bundle-scoring-post-merge/660 "2022-10-31T13:47:37Z")
Hello, When building blocks from bundles, Flashbots is scoring each and every bundle and taking the ones that maximise the block’s profit. There are different ways of scoring a bundle, as described here, what is the cur… --- ## [Bookmarks relevant for searchers](https://collective.flashbots.net/t/bookmarks-relevant-for-searchers/402)
**Author:** [@guayabyte](https://collective.flashbots.net/u/guayabyte)\ **Replies:** 3\ **Last updated:** [October 25, 2022, 12:42pm UTC](https://collective.flashbots.net/t/bookmarks-relevant-for-searchers/402 "2022-10-25T12:42:54Z")
Share your links here :chains: . --- ## [How do I choose a good block builder?](https://collective.flashbots.net/t/how-do-i-choose-a-good-block-builder/150)
**Author:** [@brock](https://collective.flashbots.net/u/brock)\ **Replies:** 0\ **Last updated:** [August 24, 2022, 3:25am UTC](https://collective.flashbots.net/t/how-do-i-choose-a-good-block-builder/150 "2022-08-24T03:25:57Z")
There are a few criteria to look for in a block builder: Are they committed to fair and unbiased execution? A good builder will not front-run, sandwich or censor bundles, or otherwise engage in activities that abuse p… --- ## [How will sending bundles change in PoS Ethereum?](https://collective.flashbots.net/t/how-will-sending-bundles-change-in-pos-ethereum/147)
**Author:** [@brock](https://collective.flashbots.net/u/brock)\ **Replies:** 0\ **Last updated:** [August 24, 2022, 3:14am UTC](https://collective.flashbots.net/t/how-will-sending-bundles-change-in-pos-ethereum/147 "2022-08-24T03:14:00Z")
Sending bundles will feel very much the same as it does with Flashbots PoW Ethereum infrastructure. You’ll still be able to send & simulate atomic bundles, and use the same bidding strategies in the blockspace/MEV auctio… --- ## [What trust assumptions exist in proposer-builder separation (PBS)?](https://collective.flashbots.net/t/what-trust-assumptions-exist-in-proposer-builder-separation-pbs/151)
**Author:** [@brock](https://collective.flashbots.net/u/brock)\ **Replies:** 0\ **Last updated:** [August 24, 2022, 3:39am UTC](https://collective.flashbots.net/t/what-trust-assumptions-exist-in-proposer-builder-separation-pbs/151 "2022-08-24T03:39:56Z")
In this initial implementation of PBS (mev-boost), to prevent things like front-running, censorship, and unauthorized data sharing, each party has to trust the parties to which they connect. When PBS is built natively in… --- ## [Can I be a block builder? How?](https://collective.flashbots.net/t/can-i-be-a-block-builder-how/152)
**Author:** [@brock](https://collective.flashbots.net/u/brock)\ **Replies:** 0\ **Last updated:** [August 24, 2022, 3:40am UTC](https://collective.flashbots.net/t/can-i-be-a-block-builder-how/152 "2022-08-24T03:40:52Z")
mev-boost provides the foundation for a competitive market of block builders, each trying to provide the most profitable block to validators. Naturally, some searchers should want to become builders themselves. We expect… --- ## [Wintermute MEV Hackathon: Searching on Ethereum with Brock Smedley (Flashbots Product)](https://collective.flashbots.net/t/wintermute-mev-hackathon-searching-on-ethereum-with-brock-smedley-flashbots-product/134)
**Author:** [@guayabyte](https://collective.flashbots.net/u/guayabyte)\ **Replies:** 0\ **Last updated:** [August 23, 2022, 1:25pm UTC](https://collective.flashbots.net/t/wintermute-mev-hackathon-searching-on-ethereum-with-brock-smedley-flashbots-product/134 "2022-08-23T13:25:43Z")
As part of Encode x Wintermute MEV Hack with Flashbots --- ## [20% of total blocks is not enough! - Mempool as alternative?](https://collective.flashbots.net/t/20-of-total-blocks-is-not-enough-mempool-as-alternative/282)
**Author:** [@TimoC](https://collective.flashbots.net/u/TimoC)\ **Replies:** 2\ **Last updated:** [September 23, 2022, 8:36am UTC](https://collective.flashbots.net/t/20-of-total-blocks-is-not-enough-mempool-as-alternative/282 "2022-09-23T08:36:14Z")
I used to be a flashbots only kind of guy. No mempool submits for arbs, just FB bundles. However, the number of FB built blocks seems too low in the current situation. Initial research shows 20%, although more info on t… --- ## [Will the mempool change in PoS Ethereum?](https://collective.flashbots.net/t/will-the-mempool-change-in-pos-ethereum/149)
**Author:** [@brock](https://collective.flashbots.net/u/brock)\ **Replies:** 5\ **Last updated:** [September 16, 2022, 9:25pm UTC](https://collective.flashbots.net/t/will-the-mempool-change-in-pos-ethereum/149 "2022-09-16T21:25:00Z")
The public mempool works the same in PoS as in PoW — anyone running an execution client (e.g. geth) can read transactions from the mempool. It should be noted, however, that the post-merge public mempool may not see as … --- ## [Questions regarding the builder](https://collective.flashbots.net/t/questions-regarding-the-builder/226)
**Author:** [@bert](https://collective.flashbots.net/u/bert)\ **Replies:** 4\ **Last updated:** [September 14, 2022, 11:14am UTC](https://collective.flashbots.net/t/questions-regarding-the-builder/226 "2022-09-14T11:14:32Z")
A few people have reached out with questions regarding how our new builder’s algorithm works. Let’s post them here so others can see the questions and answers in the open. --- ## [Bundle not included](https://collective.flashbots.net/t/bundle-not-included/174)
**Author:** [@boi](https://collective.flashbots.net/u/boi)\ **Replies:** 1\ **Last updated:** [September 5, 2022, 6:40pm UTC](https://collective.flashbots.net/t/bundle-not-included/174 "2022-09-05T18:40:32Z")
is anyone else missing blocks with their bundles despite having higher gas than last tx in block? What might be the reasons? --- ## [Please open-source the official Flashbots builder, or document its algorithm](https://collective.flashbots.net/t/please-open-source-the-official-flashbots-builder-or-document-its-algorithm/210)
**Author:** [@zzh](https://collective.flashbots.net/u/zzh)\ **Replies:** 1\ **Last updated:** [September 5, 2022, 6:39pm UTC](https://collective.flashbots.net/t/please-open-source-the-official-flashbots-builder-or-document-its-algorithm/210 "2022-09-05T18:39:04Z")
Dear Flashbots team, According to this article, the Blockbuilding Algorithm will change after The Merge. Bundles are no longer ranked by effective gas price, and other transactions may land between bundles. The new algo… --- ## [How are “relays” defined in PoS Ethereum?](https://collective.flashbots.net/t/how-are-relays-defined-in-pos-ethereum/148)
**Author:** [@brock](https://collective.flashbots.net/u/brock)\ **Replies:** 2\ **Last updated:** [August 24, 2022, 8:50pm UTC](https://collective.flashbots.net/t/how-are-relays-defined-in-pos-ethereum/148 "2022-08-24T20:50:25Z")
Before the merge, mev-relay (commonly referred to as “the relay”) was responsible for accepting bundles from searchers and relaying them to miners. After the merge, the term “relay” will mean something entirely differe… [Previous page](https://collective.flashbots.net/c/searchers/12.md?page=1)