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0 sig1 sig2 OP_2 pubKey1 pubKey2 pubKey3 OP_3 OP_checkmultisig Only the scriptSig is used. Input, an input is a reference to an output from a previous transaction. Pay-to-Pubkey-hash addresses are similarly a 20-byte hash of the public key. In fact, they assign and transfer Bitcoins. If the input is worth 50 BTC but you only want to send 25 BTC, Bitcoin will create two outputs worth 25 BTC: one to the destination, and one back to you (known as " change though you send it to yourself). sig pubKey pubKey OP_hash160 pubKeyHash OP_equalverify OP_checksig Top stack item is duplicated. It is more convenient than copy-pasting or typing in the receivers address. True Empty Signatures validated in the order of the keys in the script. Sometimes multiple transactions are made under one txid.
The two keys are related, but theres no way that you can figure out my private key from my public key. Thats very hard to do, especially since by the time youve reached half way, theres probably another block on top of the current one. This number is how many bitcoins were transferred to/from this address ( ) as part of this transaction.
Through the scripting system, the sender can create very complex conditions that people have to meet in order to claim the output's value. Transactions are not encrypted, so it is possible to browse and view every transaction ever collected into a block. sig pubKey pubHashA pubKeyHash OP_equalverify OP_checksig Top stack item is hashed. Outputs can be anything, but Bitcoin creates one exactly like an IP address transaction. This is a very effective way to tell if something has been changed, and is how the blockchain can confirm that a transaction has not been tampered with. The script contains two components, a signature and a public key.
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