Next Meetup

Sustainable Energy Cryptocurrency Mining
RSVP without a ticket doesn't guarantee you a spot. See "tickets" section for details. TIME Doors Open: 18:00, including drinks and networking (cash bar). Program Begins: 19:00 PLACE ABN Amro Bank, Circl Pavilion, Gustave Mahlerplein 1 B PROGRAM Lefteris Kokoris-Kogias, lead developer of Calypso Calypso is a solution to one of the most intractable issues of the Internet era: securely sharing private data over blockchains. Bitcoin Mining With Renewable Energy Frans Kempen, who leads IBM’s Blockchain Practice for the supply chain industry in The Netherlands and Belgium, will be the session chair for this evening. The complete lineup will be announced as soon as possible. Or check here for the full program as soon as it is available. TICKETS In advance: 6,- with Bitcoin 10,- with IDEAL Only while supplies last. Tickets will go up soon. At the door: 20,- Both Euro and Bitcoin accepted. (All early bird tickets are sold out.) Entrance and seating is first come, first served. SOLD OUT? Not yet. When we do, we'll announce it here first. --- Bitcoin Wednesday One of the best and longest-running regular Bitcoin and Blockchain conferences in the Netherlands. Always held on the first Wednesday of every month. An open and informal program for anyone interested in digital currency and the blockchain. For Bitcoin novices and experts alike. Beginners, investors, entrepreneurs, developers, miners, traders, legal professionals -- all find value in this event. Brings together a diverse group of people from all levels and backgrounds without any barriers in order to give this important new technology a prominent role in Dutch society. One of the goals of Bitcoin Wednesday is to promote the industry, to spread the word about Bitcoin (and related technology) in the Netherlands by raising the overall level of awareness and knowledge.

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Past Meetups (73)

What we're about

The Longest-Running Monthly Bitcoin and Blockchain Conference in the Netherlands.

The next Bitcoin Wednesday will be held on 5 December. For this event we are proud to present:

"Calypso: Securely Sharing Private Data over Blockchains" by Lefteris Kokoris-Kogias

Lefteris is the lead developer and creator of Calypso, a solution to one of the greatest problems created by today's Internet: securely sharing personal data over blockchains is risky and still relies on centralized and semi-decentralized systems.

A panel discussion on Bitcoin Mining with Renewable Energy

at ABN Amro HQ, hosted by Circl, the bank's pavilion for sustainability.

And much more!

Frans Kempen, IBM's practice leader for the supply chain industry in The Netherlands and Belgium will be the session chair for this evening.

Please see for the complete program. Updated daily.

RSVP for this event here .


An impression from Amsterdam's CoinFest 2016 (


On 12 June, we held a Special Edition of Bitcoin Wednesday ( at the headquarters of The Central Bank of The Netherlands.

On 7 November, 2018, the conference was held at the Volkshotel with presentations by Martin Riedel, Product Manager of Civic, Eric Tang, CTO of Livepeer, Moritz Neto, Founder of Tenzorum, Michael Mainelli, Executive Chairman of Z/Yen, Olga Feldmeier, CEO of Smart Valor and Founding Member of Switzerland's Crypto Valley Association, and Orfeas Litos of the University of Edinburgh, who is the creator of the Trust is Risk Bitcoin wallet.


Bitcoin Wednesday's 5-Year Anniversary Edition ( was a 2-day event on 4-5 July 2018 that featured:

Bitcoin Pioneer Amir Taaki, MIT's Silvio Micali, PGP creator Phil Zimmermann and the creator of drive chains and blind merge mining, Paul Sztorc, among many others.


Coming on 2 January, 2019:

Bitcoin Wednesday's New Year's Reception:


Bitcoin Wednesday is Nederlands' maandelijkse conferentie voor zowel beginners als gevorderden.

Bitcoin Wednesday is a regular conference dedicated to the digital currency revolution that is always held in Amsterdam on the first Wednesday of every month.

It is organized by and for the Dutch community by some of the Bitcoin pioneers of the Netherlands and is the longest continuously running monthly event of its kind.

There is something for everyone at Bitcoin Wednesday. Whether you're an expert or just getting started, these meetings are for you.

The first Bitcoin Wednesday was held on 3 July 2013 by a few of The Netherlands' earliest Bitcoin pioneers.

Some of the many subjects discussed:

Getting Started, Blockchain, Bitcoin, Ethereum, Ethereum Classic, DAO, smart contracts, Litecoin, Ripple, NXT, Stellar, Counterparty, Zcash, Zcoin, Dash, Lisk, Etherparty, Blockstream, IOTA, Monero, Open Bazaar, Credits, Dogecoin, MaidSafe, Zerocoin, Mining, Trading, Omni, Namecoin, Bitshares, OpenCoin, Peercoin, Primecoin, Bitcoin wallets like Airbitz, Breadwallet and Mycelium, Bitmessage, Bitmask, BitCloud, Bitcoinproof and much more.

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