Merge pull request #398 from rsksmart/push0

RSKIP398 for push0 opcode

IPs/RSKIP398.md

@@ -0,0 +1,44 @@
+---
+rskip: 398
+title: PUSH0 instruction
+description: 
+status: Draft
+purpose: Sca
+author: VK
+layer: Core
+complexity: 2
+created: 2023/07/11
+---
+# PUSH0 instruction
+
+
+|RSKIP          | 398 |
+| :------------ |:-------------|
+|**Title**      |PUSH0 instruction|
+|**Created**    |JUL-2023 |
+|**Author**     |VK |
+|**Purpose**    |Sca |
+|**Layer**      |Core |
+|**Complexity** |2 |
+|**Status**     |Draft |
+
+
+## Abstract
+
+This improvement implements Ethereum [PUSH0 instruction](https://eips.ethereum.org/EIPS/eip-3855)
+
+## Motivation
+
+This change improves scalability (as this opcode requires less gas comparing to other PUSH* opcodes) and compatibility with EVM opcodes.
+
+## Backward Compatibility
+
+This change is a hard fork and therefore all full nodes must be updated.
+
+## References
+
+[1] [EIP-3855](https://eips.ethereum.org/EIPS/eip-3855)
+
+## Copyright
+
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).

README.md

@@ -219,6 +219,7 @@ You can find an easily browseable version of this information [here](https://ips
 | 385 |[Bridge method `getEstimatedFeesForNextPegOutEvent` improvement](IPs/RSKIP385.md)| 12-MAY-23 | MI | Usa | Core | 1 | Adopted |
 | 387 |[Support for Bridging Ordinals](IPs/RSKIP387.md)| 19-MAY-23 | SDL | Usa | Core | 2 | Draft |
 | 388 |[Network Upgrade: Fingerroot](IPs/RSKIP388.md)| 31-MAY-23 | AE | Usa,Sec | Core | 2 | Adopted |
+| 398 |[PUSH0 instruction](IPs/RSKIP398.md)| 11-JUL-23 | VK | Sca | Core | 2 | Draft |
 
 (*) Under evaluation to be implemented in the next reference client release