Release notes 0.6.2

Bitcoin version 0.6.2 is now available for download at:

This is a bug-fix and code-cleanup release, with no major new features.

Please report bugs using the github issue tracker at:


Much faster shutdowns. However, the blkindex.dat file is no longer portable to different data directories by default. If you need a portable blkindex.dat file then run with the new -detachdb=1 option or the "Detach databases at shutdown" GUI preference.

Fixed, a bug that could cause long-running nodes to crash.

Mac and Windows binaries are compiled against OpenSSL 1.0.1b (Linux binaries are dynamically linked to the version of OpenSSL on the system).


Use 'git shortlog --no-merges v0.6.0..' for a summary of this release.

Source codebase changes: - Many source code cleanups and warnings fixes. Close to building with -Wall - Locking overhaul, and several minor locking fixes - Several source code portability fixes, e.g. FreeBSD

JSON-RPC interface changes: - addmultisigaddress enabled for mainnet (previously only enabled for testnet)

Network protocol changes: - protocol version 60001 - added nonce value to "ping" message (BIP 31) - added new "pong" message (BIP 31)

Backend storage changes: - Less redundant database flushing, especially during initial block download - Shutdown improvements (see above)

Qt user interface: - minor URI handling improvements - progressbar improvements - error handling improvements (show message box rather than console exception, etc.) - by popular request, make 4th bar of connection icon green