What are the attack vectors of rolling 100 dice?
stackernews-dice-attack-vectors
Latest reviewed change
source content difference between and
The Stacker News thread gained new comments about dice-based seed generation and its risks.
"text": "I see quite a number of people looking into this at the moment. I checked for a match using a coin flip within Blue Wallet & the bip39 site at iancoleman.io. They matched up with the exact 12 word seed which is good to know. \n\nI still think that even though it's a good practice to go through rolling dice or flipping coins, we still need to be able to trust the software generated wallets or Bitcoin just isn't going to work.",
"user": {
"name": "OT"
+ }
+ },
+ {
+ "createdAt": "2026-08-04T07:48:41.552Z",
+ "text": "This guide is good: https://armantheparman.com/dicev2/ and you can use offline Tails to check the math",
First lines only. The complete diff is in the timeline below.
- Organisation
- Stacker News
- Evidence role
- Community discussion
- Published
- 2026-08-04
- Source changes
- 3
- Detected differences
- 3
- Unreviewed
- 0
- Copies held
- 4
anon asking how 100 dice rolls could be attacked or botched, assuming verified seed phrases. Directly relevant to the dice-mitigation guidance the site carries. Captured through the site's public GraphQL API: the rendered pages crash the capture tab, and the API answers POST from this host. The query fixes the captured surface to the item's title, text and two levels of comments, each with author and absolute timestamp.
Every check is recorded, including checks that found no text change. A detected edit is therefore bounded between two checks. The publisher's exact save time is not observable from this record. Last checked .
This post is held twice: here, with this project's own note on why it matters, and again as part of the conversation captured at , which is polled for changes. Both copies are the same post; neither is a separate event.
Snapshot and diff bodies for this chain monitor are held in the local evidence archive but withheld from the public site because they can contain the addresses of people who published nothing themselves. Capture times and reviewed change summaries remain available below.
Held captures
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The Stacker News thread gained new comments about dice-based seed generation and its risks.
Recovered from the Internet Archive rather than captured by this project. The row records that third-party provenance separately from captures made by this project.
What changed from the previous capture 13 lines
"text": "I see quite a number of people looking into this at the moment. I checked for a match using a coin flip within Blue Wallet & the bip39 site at iancoleman.io. They matched up with the exact 12 word seed which is good to know. \n\nI still think that even though it's a good practice to go through rolling dice or flipping coins, we still need to be able to trust the software generated wallets or Bitcoin just isn't going to work.", "user": { "name": "OT" + } + }, + { + "createdAt": "2026-08-04T07:48:41.552Z", + "text": "This guide is good: https://armantheparman.com/dicev2/ and you can use offline Tails to check the math", + "user": { + "name": "SwapMarket" } }, { } }, { - "createdAt": "2026-08-04T07:48:41.552Z", - "text": "This guide is good: https://armantheparman.com/dicev2/ and you can use offline Tails to check the math", + "createdAt": "2026-08-04T18:05:54.287Z", + "text": "Real answer: rolling isn't the weak link, everything AFTER the roll is. Four ways 100 real rolls still end up compromised: 1) die bias — cheap dice aren't uniform, so your rolls lean toward certain faces, quietly cutting entropy below 256 bits. 2) miscounting rolls-to-bits during the base6-to-binary conversion. 3) off-by-one on the BIP39 wordlist index — silently gives you a DIFFERENT valid seed, no error thrown. 4) piping the conversion through some random tool instead of doing the math by hand. The dice were fine. The pipeline wasn't.", "user": { - "name": "SwapMarket" + "name": "RadVladdy21" } } ]Extracted text as captured
{ "data": { "item": { "comments": { "comments": [ { "createdAt": "2026-08-04T05:47:30.004Z", "text": "I see quite a number of people looking into this at the moment. I checked for a match using a coin flip within Blue Wallet & the bip39 site at iancoleman.io. They matched up with the exact 12 word seed which is good to know. \n\nI still think that even though it's a good practice to go through rolling dice or flipping coins, we still need to be able to trust the software generated wallets or Bitcoin just isn't going to work.", "user": { "name": "OT" } }, { "createdAt": "2026-08-04T07:48:41.552Z", "text": "This guide is good: https://armantheparman.com/dicev2/ and you can use offline Tails to check the math", "user": { "name": "SwapMarket" } }, { "createdAt": "2026-08-04T03:06:21.636Z", "text": "Just because the device shows you a valid seed after you input 100 dice rolls, doesn't guarantee the device actually used those rolls to generate the seed.", "user": { "name": "000w2" } }, { "createdAt": "2026-08-04T02:16:41.986Z", "text": "And obviously the devices you verify the seed phrase on are offline", "user": { "name": "anon" } }, { "createdAt": "2026-08-04T05:50:08.534Z", "text": "Assuming your setup is a HWW with an offline PC used for verification that the seed was generated correctly, I would add that:\n\n* The PC should be completely wiped afterwards, in case it silently saved the rolls somewhere and is later connected online.\n* One should also verify that the correct private key was generated from the seed. Theoretically a HWW could display the correct seed but fall back on a malicious hardcoded private key.\n\n__@_'-'", "user": { "name": "anon" } },Excerpt only. The complete copy is held offline and backs quotations on this site. The original publication remains the canonical public source.
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The Stacker News thread gained new comments about dice-based seed generation and its risks.
Recovered from the Internet Archive rather than captured by this project. The row records that third-party provenance separately from captures made by this project.
What changed from the previous capture 7 lines
} }, { + "createdAt": "2026-08-04T17:38:56.419Z", + "text": "Because of an entropy vulnerability in these wallets that the attacker knew about, he can bypass all the security and steal your funds... In the end, you did the right thing 👍, it's Coldcard's fault for not discovering that vulnerability, and in the end, we users pay the price!", + "user": { + "name": "mkmloom" + } + }, + { "createdAt": "2026-08-04T07:48:41.552Z", "text": "This guide is good: https://armantheparman.com/dicev2/ and you can use offline Tails to check the math", "user": {Extracted text as captured
{ "data": { "item": { "comments": { "comments": [ { "createdAt": "2026-08-04T05:47:30.004Z", "text": "I see quite a number of people looking into this at the moment. I checked for a match using a coin flip within Blue Wallet & the bip39 site at iancoleman.io. They matched up with the exact 12 word seed which is good to know. \n\nI still think that even though it's a good practice to go through rolling dice or flipping coins, we still need to be able to trust the software generated wallets or Bitcoin just isn't going to work.", "user": { "name": "OT" } }, { "createdAt": "2026-08-04T03:06:21.636Z", "text": "Just because the device shows you a valid seed after you input 100 dice rolls, doesn't guarantee the device actually used those rolls to generate the seed.", "user": { "name": "000w2" } }, { "createdAt": "2026-08-04T02:16:41.986Z", "text": "And obviously the devices you verify the seed phrase on are offline", "user": { "name": "anon" } }, { "createdAt": "2026-08-04T05:50:08.534Z", "text": "Assuming your setup is a HWW with an offline PC used for verification that the seed was generated correctly, I would add that:\n\n* The PC should be completely wiped afterwards, in case it silently saved the rolls somewhere and is later connected online.\n* One should also verify that the correct private key was generated from the seed. Theoretically a HWW could display the correct seed but fall back on a malicious hardcoded private key.\n\n__@_'-'", "user": { "name": "anon" } }, { "createdAt": "2026-08-04T17:38:56.419Z", "text": "Because of an entropy vulnerability in these wallets that the attacker knew about, he can bypass all the security and steal your funds... In the end, you did the right thing 👍, it's Coldcard's fault for not discovering that vulnerability, and in the end, we users pay the price!", "user": { "name": "mkmloom" } },Excerpt only. The complete copy is held offline and backs quotations on this site. The original publication remains the canonical public source.
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Three new comments were posted on dice-roll verification: OT (cross-checking a coin-flip seed against Blue Wallet and iancoleman.io), anon (wipe the verification PC and check the derived private key), and SwapMarket (linking arman.theparman dice guide with offline Tails). 000w2's existing comment was repositioned by ranking.
Recovered from the Internet Archive rather than captured by this project. The row records that third-party provenance separately from captures made by this project.
What changed from the previous capture 27 lines
"item": { "comments": { "comments": [ + { + "createdAt": "2026-08-04T05:47:30.004Z", + "text": "I see quite a number of people looking into this at the moment. I checked for a match using a coin flip within Blue Wallet & the bip39 site at iancoleman.io. They matched up with the exact 12 word seed which is good to know. \n\nI still think that even though it's a good practice to go through rolling dice or flipping coins, we still need to be able to trust the software generated wallets or Bitcoin just isn't going to work.", + "user": { + "name": "OT" + } + }, + { + "createdAt": "2026-08-04T03:06:21.636Z", + "text": "Just because the device shows you a valid seed after you input 100 dice rolls, doesn't guarantee the device actually used those rolls to generate the seed.", + "user": { + "name": "000w2" + } + }, { "createdAt": "2026-08-04T02:16:41.986Z", "text": "And obviously the devices you verify the seed phrase on are offline", } }, { - "createdAt": "2026-08-04T03:06:21.636Z", - "text": "Just because the device shows you a valid seed after you input 100 dice rolls, doesn't guarantee the device actually used those rolls to generate the seed.", + "createdAt": "2026-08-04T05:50:08.534Z", + "text": "Assuming your setup is a HWW with an offline PC used for verification that the seed was generated correctly, I would add that:\n\n* The PC should be completely wiped afterwards, in case it silently saved the rolls somewhere and is later connected online.\n* One should also verify that the correct private key was generated from the seed. Theoretically a HWW could display the correct seed but fall back on a malicious hardcoded private key.\n\n__@_'-'", "user": { - "name": "000w2" + "name": "anon" + } + }, + { + "createdAt": "2026-08-04T07:48:41.552Z", + "text": "This guide is good: https://armantheparman.com/dicev2/ and you can use offline Tails to check the math", + "user": { + "name": "SwapMarket" } } ]Extracted text as captured
{ "data": { "item": { "comments": { "comments": [ { "createdAt": "2026-08-04T05:47:30.004Z", "text": "I see quite a number of people looking into this at the moment. I checked for a match using a coin flip within Blue Wallet & the bip39 site at iancoleman.io. They matched up with the exact 12 word seed which is good to know. \n\nI still think that even though it's a good practice to go through rolling dice or flipping coins, we still need to be able to trust the software generated wallets or Bitcoin just isn't going to work.", "user": { "name": "OT" } }, { "createdAt": "2026-08-04T03:06:21.636Z", "text": "Just because the device shows you a valid seed after you input 100 dice rolls, doesn't guarantee the device actually used those rolls to generate the seed.", "user": { "name": "000w2" } }, { "createdAt": "2026-08-04T02:16:41.986Z", "text": "And obviously the devices you verify the seed phrase on are offline", "user": { "name": "anon" } }, { "createdAt": "2026-08-04T05:50:08.534Z", "text": "Assuming your setup is a HWW with an offline PC used for verification that the seed was generated correctly, I would add that:\n\n* The PC should be completely wiped afterwards, in case it silently saved the rolls somewhere and is later connected online.\n* One should also verify that the correct private key was generated from the seed. Theoretically a HWW could display the correct seed but fall back on a malicious hardcoded private key.\n\n__@_'-'", "user": { "name": "anon" } }, { "createdAt": "2026-08-04T07:48:41.552Z", "text": "This guide is good: https://armantheparman.com/dicev2/ and you can use offline Tails to check the math", "user": { "name": "SwapMarket" } }Excerpt only. The complete copy is held offline and backs quotations on this site. The original publication remains the canonical public source.
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Recovered from the Internet Archive rather than captured by this project. The row records that third-party provenance separately from captures made by this project.
What changed from the previous capture 0 lines
Extracted text as captured
{ "data": { "item": { "comments": { "comments": [ { "createdAt": "2026-08-04T02:16:41.986Z", "text": "And obviously the devices you verify the seed phrase on are offline", "user": { "name": "anon" } }, { "createdAt": "2026-08-04T03:06:21.636Z", "text": "Just because the device shows you a valid seed after you input 100 dice rolls, doesn't guarantee the device actually used those rolls to generate the seed.", "user": { "name": "000w2" } } ] }, "createdAt": "2026-08-04T02:03:03.197Z", "text": "I have seen multiple people talk about rolling dice but adding the caveat that you can mess those up too. My question is how?\n\nLets assume:\nYou actually rolled a dice or dice at least 100 times\nYou verified the seed phrase that you created on multiple devices\n\nHow is that setup insecure?", "title": "What are the attack vectors of rolling 100 dice?", "user": { "name": "anon" } } } }Excerpt only. The complete copy is held offline and backs quotations on this site. The original publication remains the canonical public source.
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