This article was first published on: Litecoin Project - Medium --

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This release of Litecoin Core is an important update, featuring the BIP65 (CLTV) consensus change and bug fixes. The most notable changes are outlined below.

BIP65 soft fork to enforce OP_CHECKLOCKTIMEVERIFY opcode
This release includes several changes related to the BIP65 soft fork which redefines the existing OP_NOP2 opcode as OP_CHECKLOCKTIMEVERIFY (CLTV) so that a transaction output can be made unspendable until a specified point in the future. This change paves the way for many new exciting features such as payment channels, time-locked refunds, escrow, two-factor wallets and is a major requirement for technologies like the lightning network.

  • This release will only relay and mine transactions spending a CLTV output if they comply with the BIP65 rules as provided in code.
  • This release will produce version 4 blocks by default. Please see the notice to miners below.
  • Once 951 out of a sequence of 1,001 blocks on the local no...

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