Re: [Bitcoin-development] Identity protocol observation

2013-10-03 Thread Daniel Lidstrom
Names clearly solve a different problem than that, but we still use them, so they must be solving _some_ problem :p In this case they're a unique identifier humans can remember after a bit of use and easily communicate to each other with little room for error. Securely mapping them to public keys

Re: [Bitcoin-development] Identity protocol observation

2013-10-03 Thread Mike Hearn
1) Generate sacrifice proof file using an app 2) Load file into browser 3) Surf Where are the names in that design? I'm not sure where NameCoin comes into this. The point of a sacrifice is it's an anonymous identity, there's no point attaching a name to it. BTW I keep phone numbers in an address

Re: [Bitcoin-development] Identity protocol observation

2013-10-03 Thread Daniel Lidstrom
Fair enough, though people still manage okay with phone numbers. And a decentralized naming system seems to come at great cost - with namecoin you need the whole blockchain to resolve names without trust. Strip out a bell and whistle - meaningfulness and transferability of names - and you get a s

Re: [Bitcoin-development] Identity protocol observation

2013-10-03 Thread Mike Hearn
Interesting observation, thanks. I'd think any competent implementation of such an identity scheme would not involve end users directly handling randomized nonsense words, however. I always imagined a sacrifice as being a file that you make with a GUI tool and load into a browser extension. On T

Re: [Bitcoin-development] Identity protocol observation

2013-10-03 Thread Daniel Lidstrom
A couple more thoughts on this: 1) Both c and k can be kept if c is pronounced 'ch', giving ~10.9 bits per phoneme. 2) An extra phoneme (4 encode 43 bits total) gives room to put extra information into the name, e.g. the first 5 bits could be input as the key to a PRP that permutes the last 38 bac

[Bitcoin-development] Identity protocol observation

2013-10-03 Thread Daniel Lidstrom
The location of a tx in the blockchain can be encoded in n=log2(h)+log2(t) bits, where h is the block height, and t is the number of transactions in the block. Currently h~250,000 and t~500, so n~27. A CVC phoneme encodes ~10.7 bits *, so a transaction today can be located in the blockchain with