rpc: sendrawtransaction help privacy note#16467
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laanwj merged 1 commit intobitcoin:masterfrom Jul 29, 2019
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unsigned ACK 1b41b1a78baa197daa6978095b8207a1f219a536 (only looked at the diff on GitHub for 5 seconds) |
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How does rebroadcasting a tx degrade privacy? |
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@Relaxo143: It can have the effect of announcing that it is your own txn, see discussion at http://www.erisian.com.au/bitcoin-core-dev/log-2019-07-25.html#l-389 |
In sendrawtransaction RPCHelpMan, mention unconditionality and privacy as per http://www.erisian.com.au/bitcoin-core-dev/log-2019-07-25.html#l-522 Thank you to MarcoFalke and laanwj for their review and suggestions.
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Updated PR and description to address @Relaxo143's (good) question and @MarcoFalke feedback. |
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Maybe a policy could be implemented so that nodes rebroadcast even transactions which are already in their mempools for let's say up to 10 times. That will prevent privacy leakages and also limit abuse. After the node hears the tx for the eleventh time it will no longer resend it. |
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ACK 07e01d6. (restarted appveyor) |
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ACK 07e01d6 |
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07e01d6 rpc: sendrawtransaction unconditionality/privacy note (Jon Atack) Pull request description: In sendrawtransaction RPCHelpMan, mention unconditionality and privacy as per http://www.erisian.com.au/bitcoin-core-dev/log-2019-07-25.html#l-522 before ``` $ bitcoin-cli help sendrawtransaction sendrawtransaction "hexstring" ( maxfeerate ) Submits raw transaction (serialized, hex-encoded) to local node and network. Also see createrawtransaction and signrawtransactionwithkey calls. (...) ``` after ``` $ bitcoin-cli help sendrawtransaction sendrawtransaction "hexstring" ( maxfeerate ) Submit a raw transaction (serialized, hex-encoded) to local node and network. Note that the transaction will be sent unconditionally to all peers, so using this for manual rebroadcast may degrade privacy by leaking the transaction's origin, as nodes will normally not rebroadcast non-wallet transactions already in their mempool. Also see createrawtransaction and signrawtransactionwithkey calls. (...) ``` ACKs for top commit: promag: ACK 07e01d6. laanwj: ACK 07e01d6 Tree-SHA512: 427b3ca29384eef271eb496b7b14e883220863543a536ddeb31940aaffd52ea0b607d929d50f2b7958514105ef7823fa05c1ee381d4a432808753c06bd97af58
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In sendrawtransaction RPCHelpMan, mention unconditionality and privacy as per http://www.erisian.com.au/bitcoin-core-dev/log-2019-07-25.html#l-522
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