BitDevs Meetup 11


NYC Bitcoin Center / Grand Central Ventures Cryptocurrency MHacks Hackathon

Core Dev:

Proof of Burn

• Proof of Bet

• Scripts, an Introduction

• Briefly profitable Litecoin Mining on an Amazon EC2 GPU instance

• Timelocked Transactions, a walk through

• python-obelisk

• NSA and ECC, a quick review of Koblitz curves

• Fair Two-Party Computations via Bitcoin Deposits

• Watch only addresses in QT (rebased)

• Smart (floating) fees for Qt

• Relay first-double-spend transactions

• Block download related improvements

• 'hdderive' RPC, a generic BIP32 calculator

• Stealth Addresses / Stealth Payments

• Syncing your SPV wallet, privacy leaks abound.

• BIP Proposal: Authenticated Prefix Trees

• DarkWallet Best Practices (Draft)

• Censorship-resistance via timelock crypto for embedded consensus systems

• Merge Avoidance


Minikey Generator (C)

• TP's Go Bitcoin Tests

• (Javascript)

• Chroma Wallet (Python)

• Cointrace

• CoinMessage (Python)

• CoinJoin (Rust)

• Paperwal (Python)

• Testnet Block Explorers Recover lost Bitcoin wallets from dead hdds (Shell)

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  • Steve B.


    Due to the snow, which would be getting very bad by the end of a meeting today, we are rescheduling to Friday at 6 PM; the Starbucks at 55 Liberty, corner of Nassau.

    As an added attraction, the virtual currency distro which was whiteboarded last Tuesday, with a user-friendly secured DNS, will also be previewed then...

    January 21, 2014

  • patrick c.

    pics are up! the panoramic shots kinda worked somewhat. another class for this friday is here:

    January 20, 2014

  • Steve B.

    Hey guys-

    This is a follow-up on what was mentioned at the discussion of the new Bitcoin distro last Tuesday about there being another meeting held on Monday to discuss a new developer community in New York. To insure that there was no conflict with Satoshi and the MLK holiday (and who likes meetings on Mondays anyway?), that meeting has been rescheduled to this Tuesday on January 21 at 6:00 PM.

    The new online community is to be for the constructive exchange of ideas about software for financial applications that take advantage of open source. It will primarily be forum-based (also an event calendar, among other things...), but with a few interesting twists thrown in. The goal is to have a community where members can showcase their knowledge and expertise -to get your talents and abilities known to the larger New York development community. It could even eventually prove beneficial to one's career options.

    (SEE NEXT POST...)

    January 19, 2014

    • Steve B.

      It will have sub-forums for meetup groups like BitDevs, but will certainly not be limited to virtual currencies. We are widening the scope on this to financial applications, seeing as how something you're doing with a virtual currency will eventually be interconnected with other aspects of financial affairs, be they for an investment bank or a small business owner.

      If you would like to not only take part in this community but to have some say about its future direction and functionality, we are holding a meeting to discuss the details on Tuesday at 6PM at the Starbucks in the financial district at 55 Liberty Street, corner of Nassau. Please take care to note the exact address, seeing as how there are a number of Starbucks in that neighborhood...

      January 19, 2014

  • Bojan S.

    It was nice meeting you guys last night. Check out if you can. I'd like to get your thoughts.

    January 15, 2014

  • devaang

    anyone interested in buying an 850W power source? I bought this but found I needed more power. This one was plugged in for 5 min only. I paid $166.97 and will sell for 30% discount if you pay in bitcoin.
    Cooler Master Silent Pro M - 850W 80 PLUS Bronze Power Supply with Modular Cables (RS850-AMBAJ3-US)

    January 15, 2014

    • devaang

      same discount for litecoin, anoncoin, or primecoin

      January 15, 2014

  • Ryan S.

    Yesterday we talked briefly about generating Bitcoin ECDSA keypairs (in hex and WIF) and b58check addresses as well as generating brain wallets w/ truly random passphrases.

    My co-founder and I made a pretty simple python library for doing all of this. There's also a very detailed in-line explanation of how conversion to and from b58check works.

    Also, address generation is supported for over 20 of the top cryptocurrencies.

    Here's the repo:

    Or you can just do "pip install coinkit".

    Maybe you will find this useful at the upcoming hackathon.

    Also, I'm going to ask Justin to do a presentation on this at the next meetup.

    January 15, 2014

  • patrick c.

    for those that asked for the links to this coming friday class, here it is:

    January 15, 2014

  • nick g.

    hey here is a tool/protocol example for finding trades on twitter. may be interesting:

    January 14, 2014

  • Bojan S.

    Look forward to it!

    January 14, 2014

  • A former member
    A former member


    January 9, 2014

  • A former member
    A former member

    Looks cool!

    January 3, 2014

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