Bryan Bishop Profile
Bryan Bishop

@kanzure

15,349
Followers
1,396
Following
214
Media
12,086
Statuses

mad science | #bitcoin developer | Shadowy Super Coder | singularity & superintelligence | board @ LedgerX | co-founded Custodia Bank (prev. CTO)

Austin, TX
Joined December 2007
Don't wanna be here? Send us removal request.
Pinned Tweet
@kanzure
Bryan Bishop
1 year
15 years of molecular nanotech, brain emulation, DNA synthesis, longevity, cryonics and more. Join the #hplusroadmap gc now available on discord - work on cutting-edge technology development projects. Read more here:
4
7
48
@kanzure
Bryan Bishop
6 years
Biology is the ultimate decentralization. Every cell in your body has a copy of the genetic chain. A library of tools to make and operate an entire person. Personal freedom is biological freedom. What could be more decentralized than that?
45
187
816
@kanzure
Bryan Bishop
2 years
Very grateful to see @jack 's support on the Bitcoin Developer Legal Defense Fund Thank you @jack && @morcosa
12
54
559
@kanzure
Bryan Bishop
6 years
gmaxwell has left @Blockstream , wants more time to work on bitcoin development:
12
102
315
@kanzure
Bryan Bishop
5 years
Announcing my new bitcoin vault proposal (does not require any forks): expanding on @ittayeyal / @el33th4xor 's 2016 vault proposal. My pre-signed vault scheme features an anti-theft recovery/clawback mechanism during a mandatory public observation window.
13
81
299
@kanzure
Bryan Bishop
4 years
WHAT'S NEXT: Super excited to announce-- I am working with @CaitlinLong_ and @AvantiBT team to build a bank for digital assets!
@CaitlinLong_
Caitlin Long 🔑⚡️🟠
4 years
INTRODUCING AVANTI's LEADERSHIP TEAM! @kanzure CTO, @zshimko COO, Chuck Thompson CLO/CCO, Britney Reddy chief of banking ops/CFO. We've seen A LOT MORE interest in what we're doing, given the environment, & many have expressed a wish that we were already in biz. We're sprinting!
18
32
229
25
31
280
@kanzure
Bryan Bishop
6 years
Satoshi alert key's signature of sha256("I am not CSW. Unlike me, he can't sign with the Bitcoin alert key.") -> 304402205d9ee1b1697ce3722b92a0931aae10fb76ab07a624d61b27ba5af39e85a1653d0220520ed2e30ed1c89e5c876a4e7e8f9b04a8b43c3a37b55623cae964b3938f779a
@kanzure
Bryan Bishop
6 years
It's time to reveal the bitcoin alert keys. The bitcoin alert public key was unwittingly copied by many hundreds of bitcoin copy-cats. Folks, it's going to be an interesting show.
16
36
172
20
79
250
@kanzure
Bryan Bishop
2 months
Meet your new BIP editor.
35
17
269
@kanzure
Bryan Bishop
4 years
Just in: An anonymous group of developers has relayed some feedback on taproot/graftroot to the #bitcoin development mailing list. 1) 2) 3)
43
136
239
@kanzure
Bryan Bishop
2 years
For years I have been keeping the internet's largest list of human genetic engineering upgrade targets: Here are some of my favorites...
10
43
235
@kanzure
Bryan Bishop
4 years
Avanti is hiring! We're building a US bank for digital assets @AvantiBT . Looking to fill roles for backend engineering (python/django), bitcoin/otherchain developers, devops & sysadmins. Contact: jobs @avantibank .com
9
56
213
@kanzure
Bryan Bishop
6 years
15
135
218
@kanzure
Bryan Bishop
5 months
On January 10th, 2009, I was 19 & fortunate to receive word of the launch of a small project... Bitcoin. The problem? To me it was "yet another p2p piece of crap". There was an ocean of p2p currencies launching, all garbage. True story. The lesson? Be less dismissive.
@peterktodd
Peter Todd/mempoolfullrbf=1
8 years
" yet another p2p currency piece of crap" @kanzure on Jan 10th, 2009 The first Bitcoin hater.
4
19
74
14
25
207
@kanzure
Bryan Bishop
4 years
Avanti is hiring! We're building a US bank for digital assets. Looking to fill roles for backend engineering, bitcoin/otherchain developers, devops & sysadmins. Contact: jobs @avantibank .com
11
42
199
@kanzure
Bryan Bishop
4 years
Breaking my fast at 121 hours.
23
4
202
@kanzure
Bryan Bishop
5 years
"Schnorr and taproot (etc) upgrade"
3
55
190
@kanzure
Bryan Bishop
6 years
I'm reviewing 283 pages of #bitcoin research papers & proposals for @scalingbitcoin 2018. There's a lot of great work here. This is even more content than last year.
@kanzure
Bryan Bishop
7 years
I'm reviewing 235 pages of #bitcoin research papers & proposals for @scalingbitcoin 2017. There's a lot of great work here.
2
21
72
5
52
191
@kanzure
Bryan Bishop
5 years
Transcript: How to meme bitcoin to the moon ( @bitstein ) #bitblockbloom
19
49
179
@kanzure
Bryan Bishop
5 years
Cryptography mailing list, where Satoshi originally announced bitcoin, has banned Fake Satoshi users falsely claiming to be Satoshi @perrymetzger
8
32
186
@kanzure
Bryan Bishop
5 years
I'm reviewing 456 pages of #bitcoin research papers & proposals for @scalingbitcoin 2019. This number is up from 283 pages in 2018, and 235 pages in 2017.
@kanzure
Bryan Bishop
6 years
I'm reviewing 283 pages of #bitcoin research papers & proposals for @scalingbitcoin 2018. There's a lot of great work here. This is even more content than last year.
5
52
191
6
25
183
@kanzure
Bryan Bishop
6 years
Alright. I am volunteering to provide an independent third-party audit of Bitmain hashrate.
@BITMAINtech
BITMAIN
6 years
We've just published our Transparency Policy for Shipping and Mining Practices. It includes our disclosure of 'self-mining' hashrate for all blockchains that we mine, commitment to greater transparency and zero-tolerance policy on 'secret mining'. Read on:
50
61
204
11
18
178
@kanzure
Bryan Bishop
7 months
For years now, I have moderated the bitcoin-dev mailing list along with my co-moderators. The future of the bitcoin-dev mailing list is once again uncertain, as the Linux Foundation no longer wishes to run the mailing list software. So what's next?
27
56
139
@kanzure
Bryan Bishop
5 years
A taproot proposal from @pwuille
2
51
178
@kanzure
Bryan Bishop
5 years
"HTLCs as American call options, and why LN can't be cross-asset" h/t zeeman
10
41
176
@kanzure
Bryan Bishop
3 years
Avanti is hiring! We're a US bank for #bitcoin . Hiring for senior software engineers with full-stack, frontend, and backend experience. Contact: jobs @avantibank .com @AvantiBT
14
23
157
@kanzure
Bryan Bishop
5 years
A new bitcoin improvement proposal from @LukeDashjr setting the minimum market price of BTC to $50k
21
31
160
@kanzure
Bryan Bishop
6 years
It's time to reveal the bitcoin alert keys. The bitcoin alert public key was unwittingly copied by many hundreds of bitcoin copy-cats. Folks, it's going to be an interesting show.
16
36
172
@kanzure
Bryan Bishop
6 years
My bitcoin custody slides for Baltic Honeybadger 2018 #bh2018
6
35
167
@kanzure
Bryan Bishop
6 years
My past ~4 years at @LedgerX have been a blast, and it's time for me to move on:
12
19
171
@kanzure
Bryan Bishop
6 years
Schnorr signatures BIP
1
31
164
@kanzure
Bryan Bishop
6 months
Tweet media one
4
2
153
@kanzure
Bryan Bishop
7 months
“You don’t need privacy” and “privacy is only for criminals” are lies criminals tell you to make their job easier.
7
30
143
@kanzure
Bryan Bishop
6 years
Not many people get that the bitcoin whitepaper was describing Bitcoin the software- created before the whitepaper. The source code is basically the paper's appendix. To really get bitcoin, you have to look at Bitcoin's software and its source code.
@BitcoinIsSaving
Bitcoin is Saving
6 years
The Bitcoin whitepaper was not, is not, and will never be a spec. Even if there was a written spec, it would be not define what Bitcoin is. The actual software that actual people use to receive and verify actual payments is what actually matters.
14
25
98
4
26
137
@kanzure
Bryan Bishop
5 years
Why proof-of-work? Take a look at this 2014 writeup from Andrew Poelstra explaining why proof-of-stake doesn't work: See also his refutation of ASIC resistance:
9
47
134
@kanzure
Bryan Bishop
5 years
Here are two lists of all my transcripts from (1) a recent bitcoin developer meeting, and (2) the #breakingbitcoin 2019 conference: (1) (2)
9
50
136
@kanzure
Bryan Bishop
4 years
Interview: Bitcoin, banks and @AvantiBT - featuring @CaitlinLong_ @DelRayMan @ForbesCrypto
4
24
139
@kanzure
Bryan Bishop
6 years
Transcript: Mimblewimble and scriptless scripts from RealWorldCrypto 2018
3
34
132
@kanzure
Bryan Bishop
2 years
Avanti is hiring! We're a US bank for #bitcoin . Hiring for senior software engineers with backend & blockchain integration experience. Contact: jobs @avantibank .com @AvantiBT
11
22
131
@kanzure
Bryan Bishop
4 months
The long running bitcoin-dev mailing list has a new home! We have migrated from the Linux Foundation servers to Google Groups. Read more here:
@kanzure
Bryan Bishop
7 months
Because Linux Foundation has informed #bitcoin developers to move to another host ahead of their shutdown, I have posted an overview and some options plus a potential plan for the bitcoin-dev mailing list going forward:
9
24
65
8
57
119
@kanzure
Bryan Bishop
7 years
We're in the middle of a careful Bitcoin code review w/ @petertoddbtc at @LedgerX . Let's land this thing.
8
32
115
@kanzure
Bryan Bishop
5 years
her: i like a man with ambitions me: i am going to kill the dollar her: professional ambitions me: i am going to kill the dollar, for Bitcoin
1
8
114
@kanzure
Bryan Bishop
6 years
Transcript: Lightning overview, atomic multi-path payments, watchtowers and splicing @lightning @bitconner #L2summit
4
41
107
@kanzure
Bryan Bishop
6 years
Transcript: @pwuille on taproot, Schnorr signatures and SIGHASH_NOINPUT
@SFBitcoinDevs
SF Bitcoin Devs
6 years
Video from @pwuille 's talk on Taproot, Schnorr and SIGHASH_NOINPUT is now available
4
119
322
0
26
115
@kanzure
Bryan Bishop
6 years
Alert key disclosure ->
4
43
110
@kanzure
Bryan Bishop
6 years
Very simple way to batch bitcoin transactions: have a rolling window that closes every 5 minutes, collect all withdrawal requests, generate a transaction. This can be a single threaded worker so that coin selection (and locking) doesn't get complex.
8
20
103
@kanzure
Bryan Bishop
7 months
It's very hard to be an early adopter.
@peterktodd
Peter Todd/mempoolfullrbf=1
8 years
" yet another p2p currency piece of crap" @kanzure on Jan 10th, 2009 The first Bitcoin hater.
4
19
74
7
13
109
@kanzure
Bryan Bishop
7 years
Transcript: Greg Maxwell on Bitcoin Core v0.15 etc #bitcoin @bitcoincoreorg
4
48
105
@kanzure
Bryan Bishop
6 years
Transcript: An informal chat w/ some Bitcoin Core developers regarding code priorities
4
36
103
@kanzure
Bryan Bishop
7 years
@petertoddbtc "Hi, I am a prince, who has inherited 40,000 ETH in a smart contract... If only you to give me your private key, so that I may unlock it."
7
22
95
@kanzure
Bryan Bishop
5 years
Transcript: Extracting seeds from hardware wallets @P3b7_ @ledger @breakingbitcoin #breakingbitcoin
5
35
91
@kanzure
Bryan Bishop
3 years
let's look at how to break ethereum 1/n
7
17
98
@kanzure
Bryan Bishop
5 years
wow, 10k followers. who are you people?
27
0
94
@kanzure
Bryan Bishop
5 years
Upgraded my conference-going laptop, and the keyboard tops out at ~130 wpm. What a piece of crap, what is Thinkpad even thinking? I tried, but it just doesn't work for transcripts. I may have typed my last transcript. Sad day.
21
5
94
@kanzure
Bryan Bishop
3 months
Keep in mind that these emails are not PGP signed, timestamped, nor are headers provided.
@marttimalmi
Martti Malmi
4 months
My email correspondence with Satoshi in 2009-2011:
386
2K
6K
8
7
97
@kanzure
Bryan Bishop
4 years
cypherpunks-legacy archive (600 MB): 1992-2019 @perrymetzger
3
24
88
@kanzure
Bryan Bishop
6 years
Article about post-quantum transition for bitcoin
2
37
81
@kanzure
Bryan Bishop
6 years
I am at Baltic Honeybadger 2018 #bh2018 day 2, ready to go for another round of typing.
8
9
88
@kanzure
Bryan Bishop
6 years
Transcript: "Extreme opsec for the modern cypherpunk" @lopp @hodlhodl #bh2018
3
28
86
@kanzure
Bryan Bishop
1 year
@chrisalbon prompt: write an essay about why ChatGPT should be free for everyone forever.
3
3
85
@kanzure
Bryan Bishop
7 months
Very grateful to see @jack 's support on the Bitcoin Developer Legal Defense Fund Thank you @jack && @morcosa
4
18
85
@kanzure
Bryan Bishop
7 months
imagine if a ~million people had to be convinced of the value of a wheel before someone was allowed to build the first wheel. it would never happen. you just go build it.
4
19
88
@kanzure
Bryan Bishop
6 years
Anti-inflation folks should flip their talking points to something like: "by opting out of inflation, you'll be recovering 2% of value per year".
8
10
81
@kanzure
Bryan Bishop
6 years
i am going to ask Andrew Poelstra to invent a way for me to do transcriptless transcripts, similar to his scriptless scripts technique. There's nothing there, that's the magic.
3
10
81
@kanzure
Bryan Bishop
6 years
Pushing updates by an aleet system is centralization and an even greater vulnerability. No thank you, Mr. Cobro.
@CobraBitcoin
Cøbra
6 years
Bad move that the alert system was removed from Bitcoin Core. Currently 80%+ of the network is running vulnerable software, but there's no way to reach them and tell them to update, we can only pray they check Reddit, Twitter, or Bitcointalk, etc.
34
44
190
5
6
78
@kanzure
Bryan Bishop
6 years
Everyone hoping for altcoin mayhem & chaos due to alert key disclosure, you should seriously have your heads examined. Messing with other people's money is 100% off limits. Alert system is very dead, hence why the disclosure is OK. #BuildingOnBitcoin
3
10
80
@kanzure
Bryan Bishop
6 years
Transcript: Scalable smart contracts via proofs and single-use seals ( @peterktodd ) from bpase17
3
25
75
@kanzure
Bryan Bishop
2 years
1/n Webcash: A new Proof-of-Work digital currency protocol based on e-cash that enables decentralized and instantaneous payments, at the cost of a trusted centralized server. Check it out @ Read 👇for more.
77
23
71
@kanzure
Bryan Bishop
6 years
Transcript: "The bitcoin standard" @saifedean #bh2018 @hodlhodl
5
22
79
@kanzure
Bryan Bishop
7 months
If you're not clued in to LW/EA, then you wouldn't know that there are THOUSANDS of people thinking like this - every moment of their day. The p(doom) cult dominates their every thought. We need to understand what this is and build more bridges for them to escape & heal.
@nickcammarata
Nick
7 months
ea guilt got me into ai safety and then largely into meditation to eliminate my own desires so I could work more hours in ai safety, which most eas thought was commendable. I’d convert all dollars to “lives if I donated” automatically, couldn’t avoid the subconscious calculation
8
11
628
13
9
90
@kanzure
Bryan Bishop
6 years
Transcript: Schnorr signatures for bitcoin ( @pwuille )
@pwuille
Pieter Wuille
6 years
My talk on Schnorr signatures for Bitcoin at BPASE18 is online: (slides: )
4
119
344
1
26
76
@kanzure
Bryan Bishop
5 years
I will be doing transcripts at @magicalcrypto conference #MCC2019
4
10
80
@kanzure
Bryan Bishop
5 years
Hint: If your cryptocurrency exchange doesn't do checksum validation of bitcoin addresses for withdrawals, then my code review of your exchange will say "FAILED". Same for wallets, too.
4
10
78
@kanzure
Bryan Bishop
1 year
We need to enshrine open-source software development into law to prevent open-source from being completely destroyed
4
16
76
@kanzure
Bryan Bishop
7 years
I'm reviewing 235 pages of #bitcoin research papers & proposals for @scalingbitcoin 2017. There's a lot of great work here.
2
21
72
@kanzure
Bryan Bishop
6 years
I've written a brief overview of bitcoin storage and custody on the @LedgerX blog
1
19
72
@kanzure
Bryan Bishop
2 years
@TuurDemeester You need a better strategy than "ok just sacrifice yourselves for my cause". That's not how power works.
1
2
71
@kanzure
Bryan Bishop
6 years
Transcript: Future bitcoin tech directions ( @rusty_twit )
@rusty_twit
TheRustyTwit
6 years
My @linuxconfau "Future Bitcoin Tech" video is up at notes at aka 24 Coming Bitcoin Technologies Everyone Should Know: #4 Will Surprise You!
12
120
284
3
23
73
@kanzure
Bryan Bishop
4 years
In a perfect world, what laws would you like to see enacted that would help the crypto industry? Wyoming continues to offer a compelling opportunity for legislation.
25
4
70
@kanzure
Bryan Bishop
1 year
transcript: @Grimezsz v. e/acc
@BasedBeffJezos
Beff – e/acc
1 year
Saturday - e/acc + a/acc discussion. You won't want to miss it!
13
6
58
6
11
76
@kanzure
Bryan Bishop
7 months
Physical cash is the most insanely radical cyberpunk thing in the world.
5
10
75
@kanzure
Bryan Bishop
11 months
"I believe DNA printers are on the cusp of a big upgrade. In the next five years, I expect we will gain the ability to print and assemble [...] about 5 to 10 million bases, at reasonable cost and turnaround times. This is a massive game-changer, perhaps the biggest ever to hit…
@andrewhessel
Andrew Hessel
11 months
I wrote up my talk since it wasn't recorded, see
1
4
15
2
10
73
@kanzure
Bryan Bishop
5 months
The bitcoin-dev mailing list shall not die. We are working with Linux Foundation on solutions and they wanted a break for the holidays--- I was gracious enough to grant them a break.
@benthecarman
Carman
5 months
so is the mailing list officially dead now?
5
9
22
5
8
70
@kanzure
Bryan Bishop
6 years
I was interviewed by 10x Management (tech talent agents) on bitcoin technology & hiring bitcoin developers, article here:
3
23
70
@kanzure
Bryan Bishop
6 years
Transcript: Greg Maxwell on advances in bitcoin block propagation
1
25
70
@kanzure
Bryan Bishop
8 years
California #bitcoin gathering transcript: 3 days, 80 pages, ~42,000 words @bitcoincoreorg
6
62
69
@kanzure
Bryan Bishop
6 years
Just put together a new 70-page doc, it's a compilation of transcripts from bitcoin tech talks on Schnorr signatures:
4
27
65
@kanzure
Bryan Bishop
6 years
"Bitmain contributed as much revenue to TSMC as nVidia did last quarter"
5
22
69
@kanzure
Bryan Bishop
1 year
Let's catch-up on all the recent work in protein design/protein language models/protein diffusion. 🧵👇 Let me know if I've missed any, feels like there were 10 posted just yesterday. It's been a while since I've caught up too.
4
17
71
@kanzure
Bryan Bishop
6 years
I've been thinking about a way to get CPU mining (sha256) working again.
17
5
64
@kanzure
Bryan Bishop
5 years
I'll be doing a presentation @breakingbitcoin on bitcoin webapp security and vulnerabilities. In particular, things like CSRF, left-pad, flatmap-stream, 2FA goofs, etc. What are your favorite incidents?
10
12
64
@kanzure
Bryan Bishop
5 years
An interesting strategy for a bitcoin thief is to buy bitcoin & instead of stealing, they burn the victim's coins. They earn proportional to their current investment, but so does everyone else. This gives an attacker a huge anonymity set, if their other theft opsec was perfect.
13
8
66
@kanzure
Bryan Bishop
6 years
Make backups.
4
12
62
@kanzure
Bryan Bishop
6 years
Important reminder: There is a universally accepted method of beginning the Satoshi Nakamoto identity verification process. Nobody has yet achieved even the very first step. Be careful out there.
3
7
61