📅 Original date posted:2013-07-14
📝 Original message:-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
On Sun, Jul 14, 2013 at 7:42 PM, Pieter Wuille <pieter.wuille at gmail.com> wrote:
> On Sun, Jul 14, 2013 at 07:33:06PM +0000, Luke-Jr wrote:
>> Invalid blocks are rejected by validating clients in all circumstances.
>
> I don't think that's what John means.
>
> If you have hash power for the parent chain, mining invalid blocks for the
> merge-mined chain costs you nothing. Yes, they will be invalid, but you've
> lost nothing.
>
> The basic assumption underlying mining security is that it is more profitable
> to collaborate with mining a chain (and profit from the block payout) than to
> attack it. In the case of merged mining, this assumption is not valid.
You said it better than I did.
Essentially I am worried about the chain being strangled at birth, merge-mining
makes doing so cost nothing for the attacker. With zerocoin this is a
particularly dangerous possibility due to those in the Bitcoin community who
would like to see Bitcoin continue to have poor privacy properties.
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John Dillon [ARCHIVE] /
npub15z…kn0zr
2023-06-07 15:04:17
in reply to nevent1q…lcv4
Author Public Key
npub15z6e9t07ugx267aj3s3c487pln852ydytzlgu0vkkqxfznyvx4jq4kn0zrPublished at
2023-06-07 15:04:17Event JSON
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"content": "📅 Original date posted:2013-07-14\n📝 Original message:-----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\nOn Sun, Jul 14, 2013 at 7:42 PM, Pieter Wuille \u003cpieter.wuille at gmail.com\u003e wrote:\n\u003e On Sun, Jul 14, 2013 at 07:33:06PM +0000, Luke-Jr wrote:\n\u003e\u003e Invalid blocks are rejected by validating clients in all circumstances.\n\u003e\n\u003e I don't think that's what John means.\n\u003e\n\u003e If you have hash power for the parent chain, mining invalid blocks for the\n\u003e merge-mined chain costs you nothing. Yes, they will be invalid, but you've\n\u003e lost nothing.\n\u003e\n\u003e The basic assumption underlying mining security is that it is more profitable\n\u003e to collaborate with mining a chain (and profit from the block payout) than to\n\u003e attack it. In the case of merged mining, this assumption is not valid.\n\nYou said it better than I did.\n\nEssentially I am worried about the chain being strangled at birth, merge-mining\nmakes doing so cost nothing for the attacker. With zerocoin this is a\nparticularly dangerous possibility due to those in the Bitcoin community who\nwould like to see Bitcoin continue to have poor privacy properties.\n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1.4.11 (GNU/Linux)\n\niQEcBAEBCAAGBQJR4wF9AAoJEEWCsU4mNhiPtCgH/3QLvFer3QHNU7AP+nehwcgK\nQS3xLv60lvm+pYLVAp9xFyJ5SCHVGTPvWRBmoldk8xxh9ORHlNEsnrcx9ZONTJ4F\nja4Alp9MLZK5S8dKk2juJNdKziyRkQci/nNwuqepX5JjCIRNZq1lcW4Be4W7InPt\nLtrvp7lA03uNuAXxtlYnko4mEY5l1NiBp4BvhGZ6+GRdCltPeIk2m0NwLDHWd31t\nqFLnnPSw0/9FGVs7lOaWuxbMGwPzGrIu6TXm17dqgBsl+8JuP6zHFE1ccqIxKyb6\nTdf4yNvhsvE+qlTnmcQNxM9nMHL4uqBZqJR174fAKQzcNGzVLloqbmRqKzuw5o4=\n=leUJ\n-----END PGP SIGNATURE-----",
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