RSKIPs

This repository contains the RSK Improvement Proposals (RSKIPs).

You can find an easily browseable version of this information here.

RSKIP status terms

• Draft - an RSKIP that is open for consideration
• Accepted - an RSKIP planned for immediate adoption in the reference client, i.e., expected to be included in the following reference client release.
• Adopted - an RSKIP adopted in a previous reference client release.
• Deferred - an RSKIP not being considered for immediate adoption in the reference client. May be reconsidered in the future for a subsequent release of the reference client.
• Rejected - an RSKIP that was rejected

RSKIP purpose terms

• Sca - an RSKIP that improves scalability
• Usa - an RSKIP that improves usability
• Fair - an RSKIP that improves fairness
• Sec - an RSKIP that improves security
• ST - an RSKIP that proposes a standard track

Layer

• Core - Core, consensus related
• Node - Related to node manager interfaces, such as RPC
• UI - User Interface
• 2nd - Second-layer protocols, such as off-chain payment channels
• Net - Related to p2p networking
• DApp - Dapp application interfaces

Implementation Complexity

• 1 - Minimal
• 2 - Medium
• 3 - High

Index

Nr	Title	Creation Date	Author	Pur	Layer	C	Status
0	RSKIP Purpose and Guidelines	07-MAY-18	JL				Adopted
1	Distributed Memory	09-JUN-16	SDL	Sca	Core	2	Draft
2	Dynamic Contract Dependency	11-JUN-16	SDL	Sca	Core	2	Rejected
3	Parallel Execution using static contract dependencies	22-JUN-16	SDL	Sca	Core	2	Rejected
4	Parallel Execution using runtime contract dependencies	22-JUN-16	SDL	Sca	Core	2	Accepted
5	Shift Operations	22-JUN-16	SDL	Sca	Core	1	Rejected
6	Block Size Limit	22-JUN-16	SDL	Sca	Core	1	Adopted
7	Persistent Storage Rent Paid by Code	11-JUN-16	SDL	Sca	Core	3	Rejected
8	Verification-less mining	29-SEP-16	SDL	Fair	Core	2	Draft
9	Negotiated Minimum Gas Price	21-OCT-16	SDL	Sca	Core	2	Adopted
10	Transactions never invalidate blocks	21-OCT-16	SDL	Sca	Core	2	Accepted
11	TXINDEX Opcode	07-AUG-16	SDL	Sca	Core	1	Adopted
12	Contract Sleep	06-AUG-16	SDL	Sca	Core	1	Rejected
13	Support for stable assets & token issuance	08-AUG-16	SDL	Sca	Core	3	Draft
14	Reward Manager Smart Contract (REMASC)	10-NOV-16	SDL	Sca	Core	3	Rejected
15	Simplified Reward Manager Smart Contract (REMASC)	14-NOV-16	SDL	Sca	Core	3	Adopted
16	Combined State Tree	01-NOV-16	SDL	Sca	Core	3	Draft
17	Simpler Persistent Storage Rent	27-SEP-16	SDL	Sca	Core	3	Rejected
18	Fast Hibernation Wakeup using Trie	28-SEP-16	SDL	Sca	Core	2	Draft
19	RSK Address formats	24-NOV-16	SDL	Sca	Core	1	Draft*
20	Survive and Ephemeral Memory Spaces	25-NOV-16	SDL	Sca	Core	2	Draft
21	Efficient Persistent Storage Rent	02-DIC-16	SDL	Sca	Core	2	Draft*
22	Commit to number of Merkle tree elements	04-DIC-16	SDL	Sca	Core	1	Draft
23	Onchain PoUBS	05-DIC-16	SDL	Sca	Core	3	Draft*
24	New Binary Trie	23-DIC-16	SDL	Sca	Core	3	Adopted
25	Memory caches	27-DIC-16	SDL	Sca	Core	2	Draft
26	DUPN and SWAPN opcodes	27-DIC-16	SDL	Sca	Core	1	Adopted
27	Highly Efficient Storage Rent	29-DIC-16	SDL	Sca/Fair	Core	2	Draft
28	Ephemeral segwit	29-DIC-16	SDL	Sca	Core	1	Draft*
29	Change in Account creation cost	01-JAN-17	SDL	Sca	Core	1	Reject
30	Code Pagination	01-JAN-17	SDL	Sca	Core	2	Draft
31	Hibernation Compression	10-JAN-17	SDL	Sca	Core	3	Draft
32	Double-Hashed Addresses	10-JAN-17	SDL	Sca	Core	2	Draft*
33	CODEREPLACE opcode	17-JAN-17	SDL	Sec/Usa	Core	2	Adopted
34	Contract const DATA Sections	20-JAN-17	SDL	Sca	Core	1	Draft*
35	Managing BridgeMaster Federation Members	02-FEB-17	SDL	Sca	Core	3	Draft
36	Transaction Encapsulation	02-FEB-17	SDL	Sca	Core	2	Draft
37	Single Address Smart Wallets	18-FEB-17	SDL	Sca/Usa	Core	3	Draft
38	Signature Compression	21-FEB-17	SDL	Sca	Core	3	Draft
39	Multi-key Accounts	25-FEB-17	SDL	Sca	Core	2	Draft
40	Basic Bridge for two-way-peg to Bitcoin	25-APR-17	SDL	Usa	Core	2	Adopted
41	Extended Bitcoin Bridge Transactions	25-APR-17	SDL	Usa	Core	2	Draft*
42	Remove world midstates from receipts	22-JUN-17	SDL	Sca	Core	1	Adopted
43	Sequential Address format	23-JUN-17	SDL	Sca	Core	2	Draft
44	Remove the zero-byte discount in data	24-JUN-17	SDL	Sca	Core	1	Draft
45	New Event Tree and Extended LOG	26-JUN-17	SDL	Sca	Core	2	Adopted
46	Block Mining Fees Information Mechanism	04-OCT-17	MM	Usa	Node	1	Adopted
47	CALLNUM opcode	18-OCT-17	SDL	Sca	Core	1	Draft
48	Informing average free gas per block	28-NOV-17	SDL	Sca	Core	2	Draft
49	One-To-Many hub payment channels	01-DIC-17	SDL	Sca	Core	2	Draft
50	Script Versions using HEADER pesuo-opcode	07-DIC-17	SDL	Sca	Core	1	Adopted
51	Memory-Mapped configuration register	10-DIC-17	SDL	Usa	Core	1	Adopted
52	Cache Oriented Storage Rent	12-DIC-17	SDL	Sca	Core	2	Draft*
53	Lumino Transaction Compression (LTCP)	20-FEB-17	SDL	Sca	Core	3	Draft*
54	Transaction amount & destination privacy	07-MAR-17	SDL	Usa	Core	3	Draft
55	Native Probabilistic payments	11-MAR-17	SDL	Usa	Core	3	Draft*
56	Sporadic Verification-less mining	11-MAR-17	SDL	Fair	Core	3	Draft
57	Derivation Path for Hierarchical Deterministic Wallets	05-ABR-18	IO	Usa	Net	1	Draft
58	Handling Bitcoin Forks	14-NOV-17	SDL	Sca	Core	3	Draft
59	Child Contracts	11-JUN-16	SDL	Sca	Core	1	Accepted
60	Checksum Address Encoding	25-JUN-18	IO	ST	Net	1	Adopted
61	Cache Oriented Storage Rent (collect at EOT version)	03-MAY-18	SDL	Sca	Core	2	Draft*
62	Compressed block propagation using state trie update batch (COBLO)	07-MAY-18	SDL	Sca	Core	2	Draft*
63	Double Signing for Delayed Signature Aggregation	07-MAY-18	SDL	Sca	Core	2	Draft
64	Garbage Collector for State Pruning	29-MAY-18	SDL & MMa	Sca,Usa	Core	2	Draft
65	MINGASPRICE Opcode	18-MAY-18	JIO	Sec	CORE	1	DRAFT
70	Default TX Data	25-NOV-16	SDL	Sca	Core	2	Draft
71	Transfer 2300 gas units for code execution in external transactions	30-JAN-19	SDL	Usa	Core	1	Draft
75	Native Off-Chain Probabilistic payments	07-MAY-18	SDL	Sca	Core	2	Draft
77	Smoother Difficulty adjustment	2016	SDL	Sca, Fair	Core	2	Draft
85	Remasc native contract improvements	11-JUL-2018	LS	Sca	Core	2	Adopted
87	Whitelisting unlimited mode	12-JUL-18	JD	Usa	Core	2	Adopted
89	Add Bitcoin block query methods to the bridge contract	JULY-18	SDL	Usa	Core	2	Adopted
91	STATIC_CALL opcode	2018	AE	Usa	Core	2	Adopted
92	Merkle Proof serialization	2018	DLL & MC	Sca	Core	2	Adopted
95	DELEGATECALL as an instruction set extension	2018	SDL	Sca	Core	2	Draft
98	Deactivation of the federated fallback system for block production	2018	SDL	Sca	Core	1	Adopted
99	Orchid Network Upgrade	2018	AE	Scan,Sec,Usa	Core	3	Adopted
102	Efficient and Secure Fee Bumping	2018	SDL	Usa	Core	2	Draft
106	Precompiled contract for HDWallet utility functions	2019	AM	Usa	Core	1	Adopted
107	Smaller Unitrie Nodes for Higher Scalability	2019	SDL	Sca	Core	1	Draft
108	More Efficient Unitrie Key Mapping	2019	SDL & AL	Usa,Sca	Core	2	Draft
109	Lower Storage Gas Costs for Shorter Keys	2019	SDL	Usa,Sca	Core	2	Draft
110	Fork Detection Data in RSKBLOCK tags	2019	SDL	Sec	Core	1	Draft
112	Unitrie Node identifiers	2019	SDL	Sec,Sca	Core	1	Draft
113	Unified Cache Oriented Storage Rent for the Unitrie	2019	SDL	Sec,Sca	Core	2	Draft
115	Removal of Unused Headers from the Bridge Contract	2019	SDL	Sca	Core	2	Draft
116	Failure of SSTORE on Low-Gas Recursive CALLs	2019	SDL	Sec,Sca,Usa	Core	1	Draft
119	Precompiled contract for inspecting block headers	2019	DM	Usa	Core	1	Draft
120	Shifting opcodes	2019	SMS	Sca	Core	1	Adopted
122	New method GetBtcTransactionConfirmations for Bridge contract	2019	SMS	Usa	Core	2	Draft
123	Multikey federation members	2019	AM	Sca, Sec	Core	2	Adopted
125	Create2	2019	SMS	Sca	Core	1	Adopted
131	Preventing CREATE2-after-SUICIDE in the same block	2019	SMS & SDL	Sca,Usa	Core	1	Adopted
132	Bridge ReceiveHeaders Gas Cost increase	2019	JD & SDL	Fair	Core	1	Adopted
134	Locking cap	2019	JD	Sec,Sca,Usa	Core	2	Draft
135	Managing BridgeMaster Federation Members	25-NOV-16	SDL	Sca	Core	2	Draft
138	Multi-signed transactions supporting enveloping and multi-key accounts	10-SEP-19	SDL	Sca	Core	2	Draft
139	Precompile to get transaction refunds	10-SEP-19	SDL	Sca	Core	1	Draft
140	EXTCODEHASH opcode	04-SEP-19	JL	Usa	Core	2	Adopted
141	Network Upgrade: Papyrus	27-SEP-19	AE	Sca,Usa,Sec	Core	2	Adopted
144	Parallel Transaction Execution for Unitrie	13-OCT-19	SDL	Sca	Core	3	Draft
145	Struct Transaction Format	20-FEB-17	SDL	Sca	Core	2	Draft
146	Encode bridge events in Solidity format	25-OCT-19	MI & JD	Usa	Core	2	Adopted
148	ERC1820 Pseudo-introspection Registry Contract	6-NOV-19	PMP	Usa	DApp	1	Adopted
149	Improved Asset transfers	10-NOV-19	SDL	Sca	Core	2	Draft
152	CHAINID Opcode	19-NOV-19	SMS	Sec	Core	1	Draft
153	Add BLAKE2 Compression Function F Precompile	19-NOV-20	FJ	Usa	Core	2	Adopted
157	Cumulative Difficulty in JSON-RPC block responses	11-FEB-20	MP	Usa	Node	1	Accepted
159	Minimal Proxy Contract	19-FEB-20	PMP	Usa	DApp	1	Adopted
167	Install Code Precompile	07-JUL-20	SDL	Usa	Core	1	Draft
169	Rectify EXTCODEHASH implementation	31-JUL-20	NPS	Usa	Core	2	Adopted
170	Peg-in to any address	01-SEP-20	MI	Usa	Core	2	Adopted
171	Clean EVM Internal Buffer in Call-like Opcodes	02-SEP-20	FJ	Usa	Core	1	Adopted
172	Subroutines for EVM	01-SEP-20	AL	Usa	Core	2	Draft
173	Chunk-Based Code Merkleization using the Unitrie	10-SEP-20	SDL	Sca	Core	2	Draft
174	Preserve balance in contract creation	23-JUL-21	VK	Usa/Fair	Core	1	Adopted
176	Programmable Peg-in Addresses for faster peg-ins	15-SEP-20	SDL,GM	Usa	Core	2	Adopted
177	Universal Merged Mining Extension	APR-2020	SDL & MP	Usa	Node	1	Adopted
178	External Confirmation Hashrate	2-SEP-20	SDL	Sec	Core	2	Draft
179	BTC-RSK timestamp linking	16-OCT-20	SDL	Sec	Core	1	Adopted
180	Limit the RSK merged mining merkle proof	15-JUL-21	VK	Sec	Core	1	Adopted
181	Peg-in rejection events	03-NOV-20	JD	Usa	Core	2	Adopted
185	Peg-out refund and events	19-NOV-20	JD	Usa	Core	1	Adopted
186	Active Federation creation block height registration	19-NOV-20	JD	Sec	Core	2	Adopted
187	Network Upgrade: Iris	20-NOV-20	AE	Usa, Sec	Core	2	Adopted
190	Powpeg address change audit trail	21-NOV-20	SDL	Sec	Core	1	Draft
191	Remove opcodes incompatible with Ethereum	23-NOV-20	AL	Usa	Core	1	Adopted
192	getTransactionIndex Precompile method	24-NOV-20	SDL	Usa	Core	1	Draft
194	Bloom filter compression	28-NOV-20	SDL	Sca	Core	1	Draft
197	Fix Precompile Calls Not Conforming With CALL Semantics	15-DEC-20	FJ	Usa	Core	2	Adopted
198	Minpeg, a miners' multisig in the peg	JAN-21	SDL	Sec	Core	2	Draft
199	registerBtcTransaction Is Public	07-JAN-21	MI	Sca,USa,Sec	Core	2	Adoted
200	Receive headers limits	08-JAN-21	PGP & MI	Sec	Core	2	Adopted
201	Time-locked Emergency Multisignature	15-JAN-21	SDL	Sec	Core	2	Adopted
203	getCallStackDepth Precompile method	15-JAN-21	SDL	Usa	Core	1	Adopted
207	Emergency Time-locks Refresh	18-JAN-21	SDL	Sec	Core	2	Draft
208	checkEnvironment Precompile method	19-JAN-21	SDL	Usa	Core	1	Draft
209	Stack-overflow removal	21-JAN-21	SDL	Sec	Core	2	Draft
212	HW-compatible Transaction Versioning System	29-JAN-21	SDL	Sca	Core	1	Draft
213	Simple Transaction Versioning System	2-FEB-21	SDL	Sca	Core	1	Draft
214	Ephemeral Calldata using Precompile	29-JAN-21	SDL	Sca	Core	2	Draft
215	Ephemeral Blockchain	3-FEB-21	SDL	Sca	Core	2	Draft
218	New Fee Rewards Address for the RSK Core Developers Fund	25-MAR-21	FJ	Usa	Core	1	Adopted
219	New minimum values for peg-in and peg-outs	12-JUL-21	MI	Usa	Core	1	Adopted
220	Obtain block or block header by hash or height in bridge methods	26-MAR-21	PGP,SDL	Sca	Core	1	Adopted
223	Cumulative Work in Fork Detection Data	31-MAR-21	SDL	Sec	Core	2	Draft
224	Include Uncles in CPV in Fork Detection Data	1-APR-21	SDL	Sec	Core	2	Draft
225	Emergency Multisig public keys	1-APR-21	SDL	Sec	Core	1	Adopted
239	Reprice Trie Read Opcodes	20-APR-21	SDL & SM	Sec, Sca	Core	1	Draft
240	Implement Storage Rent in RSK	27-APR-21	SDL, SM & DM	Sec, Sca, Fair	Core	2	Draft
241	User-triggered peg-out tx fee-bumping	5-MAY-21	SDL	Usa,Sec	Core	2	Draft
242	Proxy code Incentive	14-MAY-21	SDL	Sca,Fair	Core	1	Draft
243	Intra-transaction Gas Refunds	16-MAY-21	SDL	Sca,Fair	Core	2	Draft
244	Variable Storage Costs	16-MAY-21	SDL	Sca,Fair	Core	2	Draft
252	Transaction Gas Price Cap	29-JUN-21	SDL	Sec,Fair	Core	1	Adopted
264	Simplified Emergency Time-locks Refresh	12-AUG-21	SDL	Sec	Core	2	Draft
265	Bridge UTXOs Coin Selection	13-AUG-21	SDL	Sec,Usa	Core	2	Draft
270	Bridge UTXO set size management	13-AUG-21	SDL	Sec,Usa	Core	2	Draft
271	Bridge peg-out Batching	13-AUG-21	SDL	Sec,Usa	Core	2	Adopted
272	Bridge UTXO Management Account	13-AUG-21	SDL	Sec,Usa	Core	2	Draft
281	Rollup-optimized Ephemeral Calldata	5-OCT-21	SDL	Sca	Core	2	Draft
284	New deserialization method for Flyover refund addresses	19-OCT-21	JD	Usa,Sec	Core	1	Adopted
285	Utility Methods to Make PPA safer	25-OCT-21	SDL	Usa,Sec	Core	1	Draft
290	Adjust Testnet block minimum difficulty	18-NOV-21	AE	Usa	Core	1	Adopted
291	Network Upgrade: Hop	14-DEC-21	AE	Sec,Usa	Core	3	Adopted
293	Add method getActivePowpegRedeemScript to the Bridge contract and perform additional Flyover peg-in validations	18-JAN-22	JD	Usa, Sec	Core	2	Adopted
294	Limit the number of inputs to include in a migration transaction	03-FEB-22	MI	Sca, Sec	Core	1	Adopted
297	Increase max timestamp difference between btc and rsk blocks for Testnet	13-APR-22	VK	Usa	Core	1	Adopted
298	Bridge peg-out creation index	18-APR-22	JD	Sca	Core	2	Draft
305	Peg-out efficiency improvement (Segwit)	01-JUN-22	PDG, RVF & NV	Sca, Usa, Sec	Core	2	Draft
326	Pegout events improvements	21-JUNE-22	KI & JT	Usa	Core	1	Adopted
336	Simple Parallelizable Semaphore	11-JUL-22	SDL	Sca	Core	2	Draft
351	Miniheader: block header compression	12-SEP-22	IO	Sca	Core	1	Draft
353	Align RSK P2SH redeem script with Bitcoin Core standard transactions checks	24-OCT-22	MI,AE	Usa,Sec	Core	2	Adopted
357	Adjust the number of block confirmations for a PowPeg migration period	25-OCT-22	AE	Usa,Sec	Core	1	Adopted
358	Network Upgrade (patch): Hop 4.0.1	26-OCT-22	AE	Usa,Sec	Core	2	Adopted
374	Reestablish the number of block confirmations for a PowPeg migration period	15-FEB-23	MI	Usa,Sec	Core	1	Adopted
375	Use the pegout creation transaction hash as the key in the map structure that stores the pegout transactions waiting for signatures	30-MAY-23	MI	Sca,Usa	Core	1	Adopted
376	Set version 2 to PowPeg migration transactions	12-DEC-23	MI	Usa	Core	1	Adopted
377	Store the last retired federation standard P2SH script	17-MAY-23	MI	Usa	Core	1	Adopted
379	Bridge peg-out and migration transactions index	12-DEC-23	MI	Sca,Sec	Core	2	Adopted
383	Increase POWpeg activation age	10-MAY-23	JD	Fair	Core	1	Adopted
385	Bridge method getEstimatedFeesForNextPegOutEvent improvement	12-MAY-23	MI	Usa	Core	1	Adopted
387	Support for Bridging Ordinals	19-MAY-23	SDL	Usa	Core	2	Draft
388	Network Upgrade: Fingerroot	31-MAY-23	AE	Usa,Sec	Core	2	Adopted
398	PUSH0 instruction	11-JUL-23	VK	Sca	Core	2	Adopted
400	Calldata gas cost reduction	12-JUL-23	VK	Sca	Core	2	Adopted
412	BASEFEE instruction	9-NOV-23	VK	Usa	Core	2	Adopted
414	Network Upgrade: Arrowhead	7-DEC-23	VK	Usa,Sec	Core	2	Adopted
415	Fix pegnatories address derivation from public keys	30-JAN-24	MI	Usa	Core	1	Adopted
417	Avoid transactions to be reverted when Bridge method calls from smart contracts return an empty response	28-FEB-24	MI	Usa	Core	1	Adopted
419	Powpeg Spendability Validation Protocol	31-AUG-23	JD, JZ	Sec	Core	2	Draft
427	Express the amount value in wei for peg-out related events	17-APR-24	MI	Usa	Core	1	Draft
428	New pegout creation event including UTXO outpoint values	23-APR-24	NC, MI	Sca, Sec	Core	1	Draft
434	Bridge Bitcoin block chainwork up to 12 unsigned bytes	26-Jun-24	JD,JZ,MI	Sec	Core	1	Adopted
435	Network Upgrade: Lovell	27-JUN-24	AE	Usa, Sec, Sca	Core	2	Draft
436	Network Upgrade (patch): Arrowhead 6.3.1	4-JUL-24	AE	Usa	Core	2	Adopted
438	Limit the maximum size of initcode and apply extra gas cost for every 32-byte chunk of initcode	16-JUL-24	FML	Fai	Core	2	Draft
445	MCOPY instruction	12-AUG-24	AE	Usa	Core	2	Draft
446	Transient storage opcodes	12-AUG-24	AE	Usa	Core	2	Draft
453	Prevent address creation on failed CREATE/CREATE2 operations	09-OCT-24	AS	Usa	Core	1	Draft
454	Support bitcoin blocks with chain work up to 32 unsigned bytes	25-OCT-24	NC	Sca	Core	1	Draft
459	Mark rejected peg-ins as processed	10-DEC-24	MI	Usa	Core	1	Draft
460	Ignore non-standard outputs when searching for the witness commitment hash	12-DEC-24	MI	Usa,Sec	Core	1	Draft

(*) Under evaluation to be implemented in the next reference client release

Author Index

Initials	Full name	Email
AE	Adrian Eidelman	[email protected]
AL	Angel Lopez
AS	Angel Soto	[email protected]
AM	Ariel Mendelzon	[email protected]
DLL	Diego López León
DM	Diego Masini
FJ	Federico Jinich	[email protected]
FML	Frederico M. Leal	[email protected]
GM	Guido Medina
IO	Ilan Olkies	[email protected]
JIO	Jose Ignacio Orlicki
JD	Jose Dahlquist	[email protected]
JL	Julian Len	[email protected]
JT	Jeremy Then	[email protected]
JZ	Julia Zack	[email protected]
KI	Kelvin Isievwore
LS	Lisandro Sebrie
MC	Martín Coll
MI	Marcos Irisarri	[email protected]
MM	Martin Medina
MMA	Matias Marquez
MP	Martin Picco
NC	Nathaniel Calderón	[email protected]
NPS	Nicolas Perez Santoro
NV	Nicolás Vescovo	[email protected]
PDG	Patricio Diego Gallardo	[email protected]
PGP	Pamela Gonzalez Perilli
PMP	Pedro Meulen Prete
RFV	Ramses Fernandez-Valencia
SDL	Sergio Demian Lerner	[email protected]
SM	Shreemoy Mishra	[email protected]
SMS	Sebastian Matias Sicardi
VK	Volodymyr Kravets	[email protected]

Build locally

Install prerequisites

1. Open Terminal.

2. Check whether you have Ruby 2.1.0 or higher installed:

   ruby --version

3. If you don't have Ruby installed, install Ruby 2.1.0 or higher.

4. Install Bundler:

   gem install bundler

5. Install dependencies:

   bundle install

Build your local Jekyll site

1. Bundle assets and start the server:

   bundle exec jekyll serve

2. Preview your local Jekyll site in your web browser at http://localhost:4000.