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nadams 2017-05-10 12:55:37 -07:00
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@ -158,7 +158,7 @@ If the redeem script hash matches, the unlocking script is executed on its own,
Almost all the scripts described in this chapter can only be implemented as P2SH scripts. They cannot be used directly in the locking script of a UTXO.
==== Pay-to-Script-Hash Addresses
==== P2SH Addresses
((("scripting", "Pay-to-Script-Hash", "addresses")))((("Pay-to-Script-Hash (P2SH)", "addresses")))((("bitcoin improvement proposals", "Address Format for P2SH (BIP-13)")))Another important part of the P2SH feature is the ability to encode a script hash as an address, as defined in BIP-13. P2SH addresses are Base58Check encodings of the 20-byte hash of a script, just like bitcoin addresses are Base58Check encodings of the 20-byte hash of a public key. P2SH addresses use the version prefix "5," which results in Base58Check-encoded addresses that start with a "3." For example, Mohammed's complex script, hashed and Base58Check-encoded as a P2SH address, becomes +39RF6JqABiHdYHkfChV6USGMe6Nsr66Gzw+. Now, Mohammed can give this "address" to his customers and they can use almost any bitcoin wallet to make a simple payment, as if it were a bitcoin address. The 3 prefix gives them a hint that this is a special type of address, one corresponding to a script instead of a public key, but otherwise it works in exactly the same way as a payment to a bitcoin address.