bitcoin2 - athens university of economics and …bitfinexŽ btc/usd vol 130,654 btc low 8,801.0...
TRANSCRIPT
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BitCoin 2
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BITCOIN’SBLOCKCHAINSTRUCTURE
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BlocksoftransactionsBlockID:BlockAPrevious:-Nonce:XXXXXX
Signature:00…0XXX
Transaction ID Input Outputs Signatures
1 - 20->Alice Signed(Miner)
UnspentTransactions1[0]1[1]
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BlocksoftransactionsBlockID:BlockAPrevious:-Nonce:XXXXXX
Signature:00…0XXX
Transaction ID Input Outputs Signatures
1 - 20->Alice,5->Tom Signed(Miner)
BlockID:BlockBPrevious:BlockANonce:XXXXXX
Signature:00…0XXX
Transaction ID Input Outputs Signatures
2 1[0] 15->Bob,5->Alice Signed(Alice)
UnspentTransactions1[0]1[1]2[0]
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Transactionfees
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Transactionfees
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Transactionfees
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Tradingcoins
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Ethereum andsmartcontracts
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LifecycleofasmartcontractCreatecontract
Deploy
Execute
Kill
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Invokingacontract
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Invokingacontract
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Whatcontractscan(not)do?
• Performarithmeticandlogicaloperations• Loops• Verifyethereum signatures• Performtransactions(???)• InvokeothercontactsDon’ts• Storeprivateinformation• Communicatewithexternalservices
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TheDAOstory
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THANKYOU