jackjack (OP)
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May Bitcoin be touched by his Noodly Appendage
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May 11, 2013, 01:10:25 PM
Last edit: May 11, 2013, 08:26:59 PM by jackjack |
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Knowing that calculating a block hash takes ~0.5s, a new node would validate the entire blockchain in more than 48 hours...
I'm sure it's not the case, so how does the client can validate those blocks?
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Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2 Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc. |
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jackjack (OP)
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May Bitcoin be touched by his Noodly Appendage
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May 11, 2013, 07:31:41 PM |
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Can someone with an account on a litecoin forum post that question there?
Thanks
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Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2 Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc. |
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arjay45
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May 11, 2013, 07:42:52 PM |
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Scrypt is adjustable in difficulty. In litecoin it's only scrypt(1024,1,1) which is really low and very fast to calculate. Most CPUs can at least do 20,000 scrypt calculations per second, and many new processors can do much better.
So that said, it validates the blockchain exactly how you suggested: by hashing each block and making sure the hash is correct given the inputs.
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jackjack (OP)
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May Bitcoin be touched by his Noodly Appendage
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May 11, 2013, 08:26:45 PM |
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Scrypt is adjustable in difficulty. In litecoin it's only scrypt(1024,1,1) which is really low and very fast to calculate. Most CPUs can at least do 20,000 scrypt calculations per second, and many new processors can do much better.
That's where my problem is: I'm at 2 scrypt calculations per second Thanks |
Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2 Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc. |
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kokjo
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You are WRONG!
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May 11, 2013, 08:28:14 PM |
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Scrypt is adjustable in difficulty. In litecoin it's only scrypt(1024,1,1) which is really low and very fast to calculate. Most CPUs can at least do 20,000 scrypt calculations per second, and many new processors can do much better.
That's where my problem is: I'm at 2 scrypt calculations per second Thanks do you calculate them by hand? |
"The whole problem with the world is that fools and fanatics are always so certain of themselves and wiser people so full of doubts." -Bertrand Russell
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jackjack (OP)
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May Bitcoin be touched by his Noodly Appendage
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May 11, 2013, 10:20:10 PM |
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Nope, I'm using a Game Boy miner
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Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2 Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc. |
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jackjack (OP)
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May Bitcoin be touched by his Noodly Appendage
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May 11, 2013, 11:15:35 PM |
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I'll stay with sha256 then  |
Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2 Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc. |
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kokjo
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You are WRONG!
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May 12, 2013, 09:49:43 AM |
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Nope, I'm using a Game Boy miner
cool! Can i have source? please please please! |
"The whole problem with the world is that fools and fanatics are always so certain of themselves and wiser people so full of doubts." -Bertrand Russell
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jackjack (OP)
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Activity: 1176
Merit: 1255
May Bitcoin be touched by his Noodly Appendage
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May 21, 2013, 09:24:54 AM |
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Far too buggy for now
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Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2 Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc. |
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