Hardfork
Revision as of 17:44, 22 March 2014 by Eldentyrell (talk | contribs) (Created page with "A Hardfork is a change to the bitcoin protocol that requires all users upgrade. Any alteration to bitcoin which increases the set of valid transactions is a hardfork. Howeve...")
A Hardfork is a change to the bitcoin protocol that requires all users upgrade.
Any alteration to bitcoin which increases the set of valid transactions is a hardfork. However, some of these changes can be implemented by having the new transaction appear to older clients as a pay-to-anybody transaction (of a special form), and getting the miners to agree to reject blocks including the pay-to-anybody transaction unless the transaction validates under the new rules. This is how P2SH was added to Bitcoin.
See also: Softfork
