Zcoin "French Drop" v0.13.5.7

Instructions

Mandatory upgrade with hard fork on block 78500 (roughly 14-15 March 2018). You are highly recommended to spend any unspent Zerocoin mints in your wallet so that they can be moved to the new Zerocoin scheme.

If you are already on13.5.5 or 13.5.6, it is still highly recommended to upgrade to 13.5.7 to avoid nodes getting stuck.

Before anything, backup your wallet.dat (File > Backup Wallet), ideally in a different drive.

When upgrading to this version from the 13.4 branch, it will prompt for a one time reindex (approximately 30-80 minutes). A typical 1 CPU VPS will take about 1 hour 15 minutes. If you are upgrading your Znodes, as long as upgrade is completed within 3 hours, you won't need to issue a znode start command and you won't lose your queue status.

If you are upgrading from 13.5, no reindex is required unless you are stuck on a block on which a reindex is required. Follow this guide on how to reindex.

Changelog

• Fixes Zerocoin flaw allowing doublespend
• Mandatory upgrade

Safety Precautions

Please note that once you have upgraded to 13.5 branch, your wallet.dat will have a different structure from 13.4 and below and will not be backward compatible.

You are highly recommended to spend any unspent Zerocoin mints in your wallet so that they can be moved to the new Zerocoin scheme.

Binaries

• Version: v0.13.5.7- SHA256 Hashes:
  • Windows: 4d93e329fe41380f93effd32c279815cb2f4bc7a0b7b97391e32751f77c4c6c1
  • Windows installer: 4a0061de266f67b55e5a003c6c0ad633ad9a8b291556a43de625f30cecdb8293
  • Linux: 26c74586e5fc0e520ed266d20748532917d2617d2e71a8497747398943eda87a
  • Mac: c40c1e6242044a7768f7e498db66f565c56c1e8363e67f53cc9c9ca974613d55