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 gmaxw...@gmail.com wrote: On Tue, Dec 4, 2012 at 10:06 PM, Mike Koss m...@coinlab.com 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

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 l...@dashjr.org 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

[Bitcoin-development] Proposal for a new opcode

2012-03-21 Thread Watson Ladd
On Wed, Mar 21, 2012 at 3:54 PM, Gregory Maxwell gmaxw...@gmail.com wrote: On Fri, Mar 2, 2012 at 2:57 PM, Watson Ladd w...@uchicago.edu 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 receiver

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

2012-03-02 Thread Watson Ladd
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, Watson Ladd