Gulden is a collaboration between experienced developers and a supportive community. Together they are working on a user-friendly currency with advanced technology and a focus on security. This makes Gulden accessible for everyone. Send Gulden to each other, transfer it to any IBAN account, pay at Gulden Merchants and receive interest. Gulden functions without an account, all you need is the Gulden app.
Gulden develops a safe and independent payment currency
that is always accessible for everyone, now and in the future.
One of the safest blockchains
0.01% of the energy usage of Bitcoin
More than 100 merchants
More than 100,000 users
497 million Gulden in circulation
Direct transfer to IBAN
There is a Gulden app for every popular operating system. The mobile apps can be connected to the desktop app so you can manage your mobile balance on your desktop as well.
Climate friendly innovation
Blockchains like Bitcoin's are dependent on enormous computer power for its security. This costs a lot of energy and has a substantial impact on our environment. The Gulden blockchain doesn't need a lot of energy to be one of the safest blockchains in the world thanks to our Witness technology.
Save up with Gulden
If you have Gulden, then you can add to the security of the blockchain and earn Gulden in the process. You do this by participating in the Witness system available through your own desktop app, but also via a Plug-and-play Raspberry Pi or even in the cloud.
Our technology
PoW²
PoW / Witness Hybrid
PoW
Miners compete to bundle the latest valid transactions into a new block.
PoW
The winner generates a block.
Reward: 50 NLG
Witness
The block has to be signed by a Witness.
Reward: 30 NLG
PoW + Witness
Extends the blockchain.
150 seconds
The miner needs a Witness to verify the block before it becomes valid. Witnesses can only verify blocks that play according to the rules, so a miner has to share a block immediately to avoid losing money. This prevents miners from misbehaving. A Witness is anonymous and is selected at random.
A Witness is a Gulden user that has locked his or her Gulden (min. 5000 Gulden) for a certain period of time (min. 1 Month) and receives interest from the system itself.
Our development is efficient and future-oriented. All apps share the same Gulden core. New functionalities and improvements will be available on all apps. Every functionality has its own module and can be added per app.
SegSig
Extendable and efficient transaction format for better network capacity.
Sonic
Efficient utilization of your bandwidth to get up and running faster.
Link
Share accounts between multiple devices with one master device.
Delta
Difficulty algorithm for regular confirmation intervals.
Transactions/MB
Gulden
58% more
Bitcoin
Secure transaction speed
Gulden
1200% faster
Bitcoin
Initial wallet sync speed
Gulden
4800% faster
Bitcoin
Requirement to double spend 1 confirmation
Gulden
71% PoW
71% Witness
Bitcoin
50% PoW
Gulden core is decentralized and open source. This means that the code is accessible to everyone and can be verified by anyone. Contributions from experienced developers are welcomed. You can write code, solve bugs, discuss code or help us develop Gulden.
293 commits since 2018-10-18
90 million (18%) Gulden in Witness
Launched in 2014 without ICO
You receive the best support from real users
The Gulden project is a collaboration between an active community and experienced developers. The community helps new users, but also new merchants that want to accept Gulden. On the Gulden Slack anyone can ask questions or meet the people behind Gulden.
Ask your question directly
Sign up for Slack
Shortly after applying you’ll receive an invitation for Guldencom.slack.com. Channels are moderated and maintained by the Gulden Community. Click here for more information about Slack.
For merchants
Nocks makes accepting Gulden easy and risk-free with user-friendly apps and clear administration overview. Gulden payments can be instantly converted to EUR, so you don't have any exchange rate risk.
Useful tools
Advisory Board
Annemieke Eggink
Bart Hulshof
Harm Jan van Kammen
Marc Slagter
Matthias Bentein
Nick Toet
Paul Willen
Developers
Rijk Plasman
Founder / UX Designer
Founder / UX Designer
Malcolm MacLeod
Lead Developer
Lead Developer
Willem de Jonge
Core Developer
Core Developer
Rits Plasman
iOS Developer
iOS Developer
Matthias Bentein
UX Designer
UX Designer