# Bitcoin Core version 0.11.0 released

**URL:** <https://forums.counterparty.io/t/bitcoin-core-version-0-11-0-released/1332>\
**Category:** 3rd Party\
**Created:** [July 13, 2015, 1:26am UTC](https://forums.counterparty.io/t/bitcoin-core-version-0-11-0-released/1332 "2015-07-13T01:26:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [July 13, 2015, 1:26am UTC](https://forums.counterparty.io/t/bitcoin-core-version-0-11-0-released/1332/1 "2015-07-13T01:26:17Z")

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Major changes

- Protection from transaction flooding is easier
- Block file pruning
- Big endian support
- Memory usage optimization
- Fee estimation changes
- Privacy: Disable wallet transaction broadcast
- Privacy: Stream isolation for Tor

More: [https://bitcoin.org/en/release/v0.11.0](https://bitcoin.org/en/release/v0.11.0)

**NOTE:**

- Counterparty requires access to an address index, and for Bitcoin Core that is included in btcdrak’s release here: [https://github.com/btcdrak/bitcoin/releases/](https://github.com/btcdrak/bitcoin/releases/) (we may need to wait couple of days until btcdrak releases 0.11.0-addrindex.
- There’s a new feature called “block pruning” (disabled by default). It doesn’t seem Counterparty would support it because `getrawtransaction` and such can’t work when block pruning is enabled

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**Author:** ![noone](https://avatars.discourse-cdn.com/v4/letter/n/ecae2f/32.png) [@noone](https://forums.counterparty.io/u/noone)\
**Post date:** [July 13, 2015, 10:06am UTC](https://forums.counterparty.io/t/bitcoin-core-version-0-11-0-released/1332/2 "2015-07-13T10:06:59Z")

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Boom - #5286 fcf646c Change the default maximum OP\_RETURN size to 80 bytes

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**Author:** ![something](https://yyz2.discourse-cdn.com/flex004/user_avatar/forums.counterparty.io/something/32/240_2.png) [@something](https://forums.counterparty.io/u/something)\
**Post date:** [July 13, 2015, 1:56pm UTC](https://forums.counterparty.io/t/bitcoin-core-version-0-11-0-released/1332/3 "2015-07-13T13:56:49Z")

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Yep that too! 🙂