Re: [Bitcoin-development] Presenting a BIP for Shamir's Secret Sharing of Bitcoin private keys

2014-03-29 Thread Watson Ladd
On Sat, Mar 29, 2014 at 10:10 AM, Matt Whitlock wrote: > On Saturday, 29 March 2014, at 2:36 pm, Mike Hearn wrote: >> Right - the explanation in the BIP about the board of directors is IMO a >> little misleading. The problem is with splitting a private key is that at >> some point, *someone* has

Re: [Bitcoin-development] String-based Hierarchical Deterministic Keys - Alternative to BIP 32

2012-12-04 Thread Watson Ladd
On Tue, Dec 4, 2012 at 9:23 PM, Gregory Maxwell wrote: > On Tue, Dec 4, 2012 at 10:06 PM, Mike Koss wrote: >> I've implemented an alternative to the BIP 32 proposal. I wanted a system >> based on a hierarchical string representation (rather than hierarchy of >> integers as BIP 32 proposes). For

Re: [Bitcoin-development] Payment Protocol Proposal: Invoices/Payments/Receipts

2012-11-28 Thread Watson Ladd
After doing more thinking, what about letting a spend sign more information associated with the transaction, such as a transaction ID provided by the merchant? This seems to solve a lot of the problems being put forward, with much less complexity. ---

[Bitcoin-development] Fwd: Defeating the block withholding attack

2012-06-02 Thread Watson Ladd
On Sat, Jun 2, 2012 at 7:52 PM, Luke-Jr wrote: > Analysis, comments, constructive criticism, etc welcome for the following: > > ==Background== > At present, an attacker can harm a pool by intentionally NOT submitting shares > that are also valid blocks. All pools are vulnerable to this attack, whe

[Bitcoin-development] Proposal for a new opcode

2012-03-21 Thread Watson Ladd
On Wed, Mar 21, 2012 at 3:54 PM, Gregory Maxwell wrote: > On Fri, Mar 2, 2012 at 2:57 PM, Watson Ladd wrote: >> Dear all, >> I am proposing a new opcode for the purposes of anonymous >> transactions. This new opcode enables scripts to be given proof that >> the re

[Bitcoin-development] Paper up

2012-03-11 Thread Watson Ladd
Dear all, A draft of my paper is up at http://wbl.github.com/bitcoinanon.pdf Comments are welcome, as is discussion about implications I haven't thought of. Sincerely, Watson Ladd -- Virtualization & Cloud M

Re: [Bitcoin-development] Fwd: Proposal for a new opcode

2012-03-06 Thread Watson Ladd
On Tue, Mar 6, 2012 at 6:05 PM, Gregory Maxwell wrote: > On Fri, Mar 2, 2012 at 2:57 PM, Watson Ladd wrote: >> I am proposing a new opcode for the purposes of anonymous >> transactions. This new opcode enables scripts to be given proof that >> the receiver can carry out

[Bitcoin-development] Fwd: Proposal for a new opcode

2012-03-02 Thread Watson Ladd
Using OP_CHECKEXPSIG we can instead pass the script that gives the nth note value proof that the notes {1,...n-1} were turned in and are distinct. This enables a coupling of the strong double spend protection of Bitcoin with traditional digital cash's strong anonymity. Sincerely, W