Quote from: Otoh on March 26, 2013, 10:28:03 PM

Ah interesting, I see many unusual happenings regarding Tarot which I use in my day to day life/living for many years, please to excuse my minimal fees offered recently, this is because the requested addresses are really just for fun or like as you enjoy solving some even though it may not be the most cost effective use of resources - I have a couple of drinks & think that would be cool to have that one out there in the block chain, at least my public key has some earlier quite fat fees offered to hopefully make it worth mining at once in a while & in the past ppl have pulled in quite decent btc rewards from it, my favorite to date being 1ELiZABETH that I requested for my niece - a cool 9 chars after the 1 & of the harder initial A to P variety even I learn now = all the better.

@Otoh: Thanks for the info. But, I think 1ELiZABETH would be among the lower-difficulty 9-letter vanity addresses. Compare "1NewYork1" (8 letters) to "1p2pCoin" (7 letters) in the table, below.

@all: The table below shows what is on vanitypool.appspot.com, sorted in descending order of Satoshis per gigakey. The raw data came from the oclvanityminer with the verbose option, and with the printf tweaked to show Satoshis instead of uBtc. oclvanityminer always takes the top item from the sorted list and works on it. "1Douglas" would take about a day on my hardware and would pay 0.008 BTC. Next, oclvanityminjer would pick up the 2 patterns submitted by 04262ADA. (1andreas and 1aantonon). "1andreas" is more likely to be found first, it would take about 2 months on my hardware and would pay 0.40 BTC. Then 2 more months to find "1JohnGalt". Then 2 more months to find "1gSILVER". But this is my hardware. Let's consider a serious miner...

Using the data from here, and taking the best AMD hardware for vanity mining currently on the Wiki (a Radeon HD 5870), and the highest paying pattern on vanityminer.appspot.com, a Vanity Miner will be paid about 916 Satoshi/Gkey * 30 Mkey/sec * 86400 sec/day = 2374272 Satoshi/day = 0.02374272 BTC/day.

Using data from the same table, and current block difficulty, a Bitcoin miner with the same hardware could expect to earn about 400 Mhash/sec * 86400 sec/day / 2^32hashes/share * 25 BTC/block * 1 block/6695826shares = 0.03004344 BTC/day.

(I hope somebody will check my arithmetic, but I think this explains why your vanity addresses aren't being mined. As I said before, I'm experimenting, I'm very far from profitability. @Otoh: You've been lucky. Of course, you have also benefited by having 30 to 40 address being mined concurrently.)

@gyverlb: Are these numbers in line with your choice of vanity mining versus Bitcoin mining?

Code:

Satoshis
per Gkey Pattern Reward
-------- --------- --------
  916 1Doug1as 0.008
  796 Sum over 2 patterns submitted for 04262ADA...
  776 1andreas 0.40
  758 1JohnGALT 0.384
  433 1gSiLVER 0.2232
  395 Sum over 32 patterns submitted for 04C13D9C...
  233 1burrito 0.12
  230 123456789 0.118493
  175 1DanieLRH 0.08868
  168 1swhitt7 0.0864
  158 1Coinbets 0.08
  155 1Satoshi 0.08
  126 17Strykes 0.064
  109 1Casascius 3.20
   63 1Lebanon1 0.032
   54 1kArLMaRx 1.60
   47 1AuGramAu 0.024
   47 1NewYork1 0.024
   47 1p2pCoin 0.024
   31 1TeraVPS 0.016
   29 1tigereye 0.88
   25 1AUSTRALiA 0.72
   25 1Casascius 0.72
   23 1bitpoin 0.012
   21 1EstradaC 0.0104
   20 1aantonop 0.60
   17 1LoveLTCs 0.0088
   16 1ZhouTong 0.48
   11 1111Wish 0.32
   5 1MrCoinMan 0.16
   5 1SkRRJyTC 0.16
   4 1MoLeCuLaR 0.12
   3 1ALiCECiLA 0.08
   3 1Anonymous 0.08
   3 1Fizzisist 0.08
   3 1Konichiwa 0.08
   3 1RedCross 0.08
   3 1RedQueen 0.08
   3 1STEELERS 0.08
   3 1STEQUALD 0.08
   3 1Satan666 0.08
   3 1Saturday 0.08
   3 1SiLkRoAd 0.08
   3 1SoDesuNe 0.08
   3 1ThankYou 0.08
   3 1Thousand 0.08
   3 1Thursday 0.08
   3 1Universe 0.08
   3 1Washing1 0.08
   3 1currency 0.08
   1 1BitSnitch 0.04
   0 1Rastafari 0.48
   0 1TheDoctor 0.40
   0 1ThePiachu 0.80
   0 1Wednesday 0.08
   0 1WiKiLEAKS 0.08
   0 1SatoshiNak 0.08
   0 1qwertyuiop 1.20

Update: Correction to formula for bitcoin mining