đź“… Original date posted:2014-10-06
đź“ť Original message:Sergio,
you can call this an ORBS attack or an attempt of ad-hoc coalition forming for a fork.
Preparation Step:
Include a transaction sending a sizable amount between two of your own addresses in every block.
Miner can do this at zero cost in their own blocks.
Execution:
Embed into the preferred fork a transaction double spending the regular do-nothing transaction with one that offers a sufficiently high fee. This offers inceptive to rational miner to join the ad-hoc coalition for that fork.
Attempting to form an ad-hoc coalition using above steps is open to anyone, just cheaper and easier to execute for a miner.
Fortunately cost for (cumulative) proof-of-work creates a lower bound to the incentive that need to be offered. So your worry
of times where block subsidy is low is unwarranted as cost of POW will be high.
I do not think “disallowing” the implementation of rational mining is a viable option, since no one needs permission to implement whatever optimization he thinks is profitable and within the rules.
Tamas Blummer
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Tamas Blummer [ARCHIVE] /
npub1cc…ex8m8
2023-06-07 15:26:17
in reply to nevent1q…z88q
Author Public Key
npub1ccegg9n9lnx6huppxg43m95488yur7pfemkn3pz0agjws5ffvtts0ex8m8Published at
2023-06-07 15:26:17Event JSON
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"content": "📅 Original date posted:2014-10-06\n📝 Original message:Sergio,\n\nyou can call this an ORBS attack or an attempt of ad-hoc coalition forming for a fork.\n\nPreparation Step:\nInclude a transaction sending a sizable amount between two of your own addresses in every block.\nMiner can do this at zero cost in their own blocks.\n\nExecution:\nEmbed into the preferred fork a transaction double spending the regular do-nothing transaction with one that offers a sufficiently high fee. This offers inceptive to rational miner to join the ad-hoc coalition for that fork.\n\nAttempting to form an ad-hoc coalition using above steps is open to anyone, just cheaper and easier to execute for a miner. \n\nFortunately cost for (cumulative) proof-of-work creates a lower bound to the incentive that need to be offered. So your worry\nof times where block subsidy is low is unwarranted as cost of POW will be high.\n\nI do not think “disallowing” the implementation of rational mining is a viable option, since no one needs permission to implement whatever optimization he thinks is profitable and within the rules.\n\nTamas Blummer\n-------------- next part --------------\nA non-text attachment was scrubbed...\nName: signature.asc\nType: application/pgp-signature\nSize: 496 bytes\nDesc: Message signed with OpenPGP using GPGMail\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20141006/c0751957/attachment.sig\u003e",
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