Chainweb

This version replaces all previous versions. Any prior version will stop working
on **2023-09-07T00:00:00Z**. Node administrators must upgrade to this version before
that date.

This version will expire on **2023-10-19T00:00:00Z**.

To upgrade, pull the latest docker image or download the binary and restart the node.

Changes:

* A new chainwebVersion called fast-development, intended for use by Pact
developers. See 1627 for more details.
* Updated to Pact 4.8. (numerous, see [Pact

**NOTE: THIS VERSION SUPERSEDES 2.19.1. PLEASE UPDATE AS SOON AS POSSIBLE.**

This version replaces all previous versions.

This version will expire on 2023-09-07.

To upgrade, pull the latest docker image or download the binary and restart the node.

Changes:

* Add rewind support to /poll and /local. (1653, 1686)
* Add some leniency to mempool creation time checks. (1255)
* Return metadata from /local with preflight set to true. (1612)
* Optimize new block creation. (1691)

**NOTE: THIS VERSION SUPERSEDES 2.19. PLEASE UPDATE AS SOON AS POSSIBLE.**

This version replaces all previous versions. Node administrators must upgrade to
this version before 2023-06-01T00:00:00Z.

This version will expire on 2023-09-07.

To upgrade, pull the latest docker image or download the binary and restart the node.

Changes:

* Disable user function return value typechecking (1661)
* Add typechecking option to tx-sim. (1656)

**NOTE: THIS VERSION IS OBSOLETE. IT IS REPLACED BY 2.19.1. PLEASE UPDATE AS SOON
AS POSSIBLE.**

This version replaces all previous versions. Any prior version will stop working
on 2023-06-01T00:00:00Z. Node administrators must upgrade to this version before
that date.

This version will expire on 2023-09-07.

To upgrade, pull the latest docker image or download the binary and restart the node.

Changes:

* Support for Pact 4.7 (1649, 1645, 1633, 1639):
* Pact errors are now displayed to users of the Pact /poll endpoint. Some
Pact errors have changed and been made shorter.

Bug fixes:

* API endpoints now more strictly comply to the API specification at
api.chainweb.com. (1434)
* A small memory leak has been fixed. (1635)

This is a feature and bug-fix release. Upgrading is optional but recommended.

To upgrade, pull the latest docker image or download the binary and restart the
node.

All 2.18.* versions will expire on **2023-06-01T00:00:00Z**.

[Changes](https://github.com/kadena-io/chainweb-node/compare/2.18...2.18.1):

Performance Improvements:

* Optimize JSON+base64 encoding. (1611)
* Use `application/octet-stream` encoding for P2P header queries. (1619)

Miscellaneous:

* Remove unused rate limiting configuration settings. (1616)
* Remove CORS support from the P2P API. (1616)
* Remove unused hashes and SPV endpoints from the P2P API. (1616)
* Tighten default P2P rate limits. (1616)
* Add dedicated rate limiter for Mempool requests. (1616)
* Disable unused `application/json;blockheader-encoding=object` in responses
from the P2P API. (1619)

This version replaces all previous versions. Any prior version will stop working
on **2023-03-02T00:00:00Z**. Node administrators must upgrade to this version
before that date.

This version will expire on **2023-06-01T00:00:00Z**.

To upgrade, pull the latest docker image or download the binary and restart the
node.

[Changes](https://github.com/kadena-io/chainweb-node/compare/2.17.2...2.18):

* New /local endpoint preflight simulation API. (1585, 1600)
* Support for Pact 4.6: (1602)
* New ZK native function support.
* Better gas estimation.
* Warning deprecation system support in /local:
* Allows the node to provide warnings for upcoming feature deprecations in Pact.
* The same warnings are generated by the repl in Pact 4.6.
* Internal changes to support future chain database schema changes.
* Remove libtbb as a dependency.

Bug fixes:

* Filter Module Cache for just `coin` contract. (1548)
* Prevent table name clashes in module. (1556)
* Full chain replay is now possible on Intel Mac & Linux, and M1 Mac.
When upgrading directly from chainweb-node version 2.17, please, also take a look at the changes in versions 2.17.1 and 2.17.2 below.