📅 Original date posted:2014-03-12
📝 Original message:This is purely a MultiBit HD thing. Nothing to do with the BIP, unless the
wider community felt that it would be generally useful.
It has nothing to do with internal word list checking and is purely an
additional check to reduce the blockchain search load for SPV clients when
restoring wallets.
On 12 March 2014 19:35, Jean-Paul Kogelman <jeanpaulkogelman at me.com> wrote:
>
>
> On Mar 12, 2014, at 09:49 AM, Gary Rowe <g.rowe at froot.co.uk> wrote:
>
> Jean-Paul, it may be worth noting that the BIP39 word list is integrated
> into Bitcoinj so will likely become the de facto standard for Android,
> Trezor web and several desktop wallets. Anyone deviating from that word
> list would likely find themselves in an isolated pocket.
>
> Regarding the timestamp, MultiBit HD uses a simple timestamp of "number of
> days since midnight of Bitcoin genesis block in UTC with modulo 97 checksum
> appended". Thus a new seed generated on 27 January 2014 would have
> "1850/01" as its checksum.
>
>
> I'm a bit confused, are you changing the way the checksum is calculated,
> or fudging the input seed to produce a specific checksum? Or is checksum in
> this case another value calculated over the mnemonic list?
>
>
> When creating a new wallet the users are tested that they have written the
> timestamp down along with the associated 12/18/24 words.
>
>
> So this is specific to MultiBit HD? Wouldn't it be better to include this
> into the BIP?
>
>
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Gary Rowe [ARCHIVE] /
npub1j8…wpach
2023-06-07 15:15:14
in reply to nevent1q…wp7l
Author Public Key
npub1j8mfekhmgtne6ptzxptudrcpwd6wtyxk64qdn3swy2nv46zuledskwpachPublished at
2023-06-07 15:15:14Event JSON
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"created_at": 1686150914,
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"content": "📅 Original date posted:2014-03-12\n📝 Original message:This is purely a MultiBit HD thing. Nothing to do with the BIP, unless the\nwider community felt that it would be generally useful.\n\nIt has nothing to do with internal word list checking and is purely an\nadditional check to reduce the blockchain search load for SPV clients when\nrestoring wallets.\n\n\nOn 12 March 2014 19:35, Jean-Paul Kogelman \u003cjeanpaulkogelman at me.com\u003e wrote:\n\n\u003e\n\u003e\n\u003e On Mar 12, 2014, at 09:49 AM, Gary Rowe \u003cg.rowe at froot.co.uk\u003e wrote:\n\u003e\n\u003e Jean-Paul, it may be worth noting that the BIP39 word list is integrated\n\u003e into Bitcoinj so will likely become the de facto standard for Android,\n\u003e Trezor web and several desktop wallets. Anyone deviating from that word\n\u003e list would likely find themselves in an isolated pocket.\n\u003e\n\u003e Regarding the timestamp, MultiBit HD uses a simple timestamp of \"number of\n\u003e days since midnight of Bitcoin genesis block in UTC with modulo 97 checksum\n\u003e appended\". Thus a new seed generated on 27 January 2014 would have\n\u003e \"1850/01\" as its checksum.\n\u003e\n\u003e\n\u003e I'm a bit confused, are you changing the way the checksum is calculated,\n\u003e or fudging the input seed to produce a specific checksum? Or is checksum in\n\u003e this case another value calculated over the mnemonic list?\n\u003e\n\u003e\n\u003e When creating a new wallet the users are tested that they have written the\n\u003e timestamp down along with the associated 12/18/24 words.\n\u003e\n\u003e\n\u003e So this is specific to MultiBit HD? Wouldn't it be better to include this\n\u003e into the BIP?\n\u003e\n\u003e\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20140312/389055f9/attachment.html\u003e",
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}