Total amount of supply is 18,400,000 XWP
Cuckaroo29s Cycle PoW algorithm with 15 second block time
Block timing is regulated using Monero DAA

CryptoNote protocol based privacy standards for transactions.


Cuckoo graphing improves verification speed substantially making block propagation much faster.

Decreases cryptographic proof sizes.

Faster confirmations and higher transaction throughput.

Improved network performance and stability.

Establishes a working economy discouraging the mining of empty blocks.

Encourages early adoption and early network security.

Born without governance fees and adheres to a feeless governance model. Swap uses miner fees to incentivize network security.

Equal, fair, and open community release.


Swap: When The Cuckoo Sang A CryptoNote

 Swap (XWP) is a privacy coin with as rigorous and determined an ambition for fair mining as any cryptocurrency I have encountered.. 

Project Overview 

HASHR8 Privacy Coin Reviews: Swap

 Privacy is a fundamental human right and requirement for freedom. We should be able to have privacy, not just in our own homes, but also in our financial transactions.. 

Community Interview 

Q&A — Sebastian Green, founder & developer of Swap XWP

 Swap is one of those projects with an active mining community which stood out to me the past months.. 

Developer Interview 

How to Mine SWAP (XWP): Complete Beginner’s Guide

 Welcome to Swap, the first CryptoNote coin securing their network by implementing mining with the Cuckaroo Cycle PoW.. 

Mining Overview 

Swap Micropool — Your definitive guide to soloing blocks like a pro!

 So how hard is it to setup and run your own Micropool? Not that hard at all and if you follow this guide.. 

Micropool Overview 

Swap XWP: The most fundamentals driven crypto coin yet?

 A fast, fair, efficient, peer-reviewed, privacy-oriented CN + C29s hybrid monster with a stable and secure blockchain.. 

Project Analysis 

A variety of wallets for a variety of users.

Swap is not associated with exchanges and will not pay fees to be listed. Exchanges have determined Swap deserving of listing.

Whether you're new and want to try out mining or you're a veteran looking for more hash, Mining Rig Rentals is the place to go.

HQ United States
Genesis April 3, 2014
XWP Listed February 20, 2019

The main hub for all CryptoNote currencies and a popular Swap exchange. A secure and straightforward choice for trading Swap.

HQ Bermuda
Genesis November 1, 2017
XWP Listed March 14, 2019
0.2% Trading Fee
Dynamic Withdrawal Fee

The goal at Graviex is to provide a comfortable trading process. That's why commissions on withdrawals are so low and placing funds into a trading account is so quick.

HQ Malta
Genesis October 30, 2018
XWP Listed April 11, 2019
0.2% Trading Fee
0.1% Trading Fee for GIO
Dynamic Withdrawal Fee

Mine Swap using your computers graphic card with as low as 4GB of dedicated GPU memory. Mining with 4GB of dedicated GPU memory requires GMiner on Windows 7 or Linux.

Mine Swap on lolMiner using CR29-32 as the algorithm parameter.

Minimum 5GB GPU Memory
2% Fee

Latest Release 

The only Swap miner to support 4GB GPU Memory. Mining with 4GB GPU memory is only supported on Windows 7 and Linux. For Windows 10 6GB of GPU memory is required. Latest version supporting Cuckaroo29s is v2.58

Minimum 4GB GPU Memory
2% Fee

Release v2.58  BitcoinTalk 

Windows 10 requires a minimum 6GB GPU Memory. Use Windows 7 or Linux for 5GB GPU Memory support. Includes remote web monitoring. Latest version supporting Cuckaroo29s is v35.2.

Minimum 5GB GPU Memory
2% Fee

Release v35.2  BitcoinTalk 

Supports remote web monitoring. Windows requires .NET Core Build apps.

Minimum 6GB GPU Memory
2% Fee

Latest Release  Official Homepage  .NET Core 

The first Swap miner and serves as an example for other miner developers. Windows requires .NET Core Build apps. This miner is inefficient and not recommended for mining.

Minimum 6GB GPU Memory
0% Fee

Latest Release  How to Guide  .NET Core 

The Swap Micropool delivers low latency and zero pool fees to miners. Mining solo is especially achievable with quick 15 second block times and Cuckoo, the simplest PoW algorithm on the planet.

Swap Micropool


App v1.5.5 

Pool together with other miners and share the block rewards. Use a pool that is geographically near the miner for the best efficiency.


Mining Pool Stats 

Project milestones and future goals.

November 16th 2018

FreeHaven is Born

Simply speaking, Haven added fees, so the community made a free coin. Thus the birth of FreeHaven (XFH).

Faster 15-second blocktime, no premine, no fees, and no BS.

December 11th 2018

Re-branding to Swap and BulletProof Transactions

Re-branding to Swap (XWP) wasn't only a name change, but it also removed any coding ties to Haven.

Swap is rebased from Monero adding BulletProof transactions.

December 16th 2018

Hardware Wallet Support

Store XWP physically with a Ledger Blue, Nano S, or Nano X.

February 15th 2019

Website Comes Online

First Swap splash page is born with links to pools, mining software, and wallet downloads.

Swap marketing starts assembling. Social media sites are established and community outreach begins to form.

February 20th 2019

Fork to Cuckaroo29s Cycle PoW

Successfully forked at block 555.555. Swap is the first CryptoNote coin to integrate Cuckaroo for fair mining.

This change brings the Swap blockchain superior security and stability.

March 4th 2019

Swap Micropool Created

The Swap Micropool brings low latency and zero pool fees to all miners.

March 14th 2019

Swap Listed on TradeOgre Exchange

TradeOgre is a long-time favorite in the CryptoNote space, making it a new friendly place to trade Swap.

April 11th 2019

Swap Listed on Graviex Exchange

Graviex is a beautiful exchange offering pairings in both BTC and ETH.

April 27th 2019

MyMonero Apps Now Easily Ported to Swap

With the addition of 4 new repos Swap is now compatible with MyMonero Apps.

The new repos are lightwallet-server, myswap-core-js, myswap-core-cpp, and swap-core-custom.

May 2nd 2019

Light Web Wallet Online

Send and receive Swap with ease using your favorite web browser.

November 18th 2019

Android Wallet Support

Users can now send and recieve Swap on Android compatible phones.

January 8th 2020

Electron Wallet Support

A user-friendly lightweight GUI option for sending and receiving Swap.

May 24th 2022

iOS Wallet Support

The capability to send and receive Swap on the iOS phone.

Future Goal

Smart Contract

Write and deploy smart contracts with optional privacy on the Swap Network.

Future Goal

Atomic Swaps to Bitcoin with Lightning Network

The newest technology heading into next year.

With atomic swaps comes the ability to directly send Swap between Bitcoin, Litecoin and any crypto coins on the Lightning Network.

The future of Swap is about remaining a robust blockchain, secure against outside attacks, flexible, and adapting to advancements in technology.

A community developed crypto coin with contributors from around the world.


Sebastian Green


Founder, Development

 Seb has insane amounts of experience, but he's kinda iffy when revealing. Knowing him, he'll probably just point you to his Github. 

Long Huynh


Founder, Network Ops

 Started mining in late 2017, and quickly became interested in CryptoNote technology.
 Using my past experience as Quality Assurance, I do code review and testing for Swap. This way no bugs go slipping by unnoticed. 




 Almost 12 years of experience in managing many kind of IT technical projects. Full and depth knowledge in the fields of wireless, network, and physical/virtualization server infrastructure.  



Hardware Developer

 Started out exploring crypto around 2018 and got into hardware development especially with ledger. Love for gaming and programming. 

Antonios Papadakis



 Started learning about crypto and quickly became interested in CryptoNote tech and community-driven coins like this one. I have since been contributing to FOSS crypto projects and have been loving every step of the way. 

Want to contribute? Join Discord! 

What is the current main objective for Swap?

The main objective is to remain an ethical, useful, and fair crypto coin. For Swap, this includes robust privacy, ecosystem fairness, full transparency, secure blockchain, and ease of use.

With Swap you can expect no compromises with governance fees, no premine, and no BS.

Is MimbleWimble Cuckoo?

No, MimbleWimble is the protocol (like CryptoNote). Cuckoo is the original algorithm Cuckatoo and Cuckaroo are based on. Cuckatoo is the ASIC friendly algorithm and Cuckaroo is the GPU friendly algorithm.

Swap uses the CryptoNote protocol for transactions and a Cuckaroo variant for mining.

Why is Swap going to fork and when?

CryptoNight is slow on GPUs because FPGAs can use embedded RAM. Further variants of CryptoNight will buy time but do not solve anything long-term.

Cuckaroo Cycle PoW brings superior protection and stability to the Swap network. The fork was on February 2nd, 2019 10:30 AM UTC.

What makes Swap different from other CryptoNote coins?

We use Moneros way of handling transactions (BulletProof) and a Grin-like way of mining (Cuckaroo Cycle PoW).

Swap will stay close to Monero technology-wise while using a different PoW algorithm.

How can someone without coding skills help the project?

Learn the technology. It's easier to explain things when you understand them better. Then you can form opinions about the technology's potential, or lack thereof.

Spread the word about Swap and bring all kinds of people in, regardless of coding skills. Even reach out to haters, because they help to make the community more robust.

Why do addresses start with "fh"?

The two letters are from the initials of FreeHaven. After re-branding to Swap, the address was kept to simplify compatibility with legacy addresses and to remember where the project originated from.

Swap is the first CryptoNote coin securing the network with Cuckoo.

Cuckoo Github  Cuckoo Whitepaper 

Simplest PoW algorithm

"With a 42-line complete specification, Cuckatoo Cycle is less than half the size of either SHA256 or Blake2b. While trivially verifiable, finding a 42-cycle, on the other hand, is far from trivial, requiring considerable resources."
  - John Tromp

The most efficient way to find cycles

Step one is removing edges that are not part of a cycle (99.9%). Step two is a backtracking graph traversal to find all cycles.

Swap uses 32 edge trimming cycles.

Lean and mean mining

Miners use 1 bit per edge and 1 bit per node. Finding node bits in random sequence causes a bottleneck which makes mining memory latency bound.

The majority of this form of mining is done in a very simple way.

Decreased hash confirmation time

Less server overhead making processing more efficient.

CryptoNote and Cuckaroo hybrid monster

Swap is keeping CryptoNote for transactions with anonymity features and user friendliness. Meanwhile, for mining, adopting Cuckaroo with superior network protection and stability.

CryptoNight mining is vulnerable to FPGA and ASIC network attacking.


Cuckaroo29s vs Cuckaroo29

Cuckaroo29s uses 32-cycles while Cuckaroo29 uses 42-cycles. Both cycling ratios produce similar performances.

For more details read the Cuckoo Whitepaper on Github.

Graph cycle performance

Find an improvement in mining and receive a bounty reward.

CPU speedup bounty $10,000, linear time-memory trade-off bounty $10,000, GPU speedup bounty $5,000, and Siphash bounty $5,000.

CryptoNote is a robust privacy protocol for blockchain.

CryptoNote Whitepaper  Whitepaper Review 

Transaction technology

CryptoNote uses ring signatures, a sophisticated scheme requiring several different public keys to verify a transaction.

The transaction is signed by multiple users anonymously. Only signing users have knowledge of sender and receiver.

Ring signatures restrict double-spending attempts by linking transactions with the same private key. The protocol uses the key image, derived from a private key through an unidirectional function.

Users store all images and verify them against new transactions. If there is a double key image, the transaction is rejected as a double-spending attempt. Meanwhile the identity of the sender remains unknown, it's not possible to get a private key from an image.

The protocol generates multiple unique one-time addresses for each payment from the unique public key. The sender uses random data and the receiver's public address to generate a one-time key.

The redeemable funds require the receivers private key. They are the only one who can receive the funds sent to the one-time address. A third party can't see the connection between the one-time key and the public address of the receiver.

Supply and emission

Genesis on November 16, 2018, at 09:06:03 (UTC).

Total supply is 18,400,000 XWP.

Emission Chart

Tail emission

When the block reward is below tail emission block reward, the tail emission phase will begin. Block reward will be constant at 0.075 Swap.

The kickoff will be year 8 from genesis block. This is after roughly 16,000,000 blocks found, or 18,085,000 into coin emission. During tail emission there will be 157,680 coins mined each year.