William Entriken

William Entriken

Building product, developer communities and publishing zero-day research.

Lead author of ERC-721, the document that started NFTs as we know them.

Developer communities

How to build a developer community?

The critical step for attracting and exciting developers in your community is helping them compile the code. Here's the simple test: If an end user is slightly interested, but not religious, about your project could they contribute something useful within 7 minutes?

If so, great! Your project is growing!

Case study: In the Ethereum community, we:

  • Helped to standardize how NFTs work
  • Evangelized and onboarded developers
  • Built the standards process for new standards
  • Improved Solidity, the smart contracts language

And now today, NFTs are the primary onramp for new developers to blockchain. And it is the only legal use case in China.

My work was sponsored in part by Ethereum Foundation and Microsoft/GitHub.

The seven-minute test is easy to say and hard to pass.

How to make hackathons and community events

Like any great party, you need a great theme. Don't pick the theme "a bunch of college kids showing up to learn about your product and do your work without pay," that's so 2010's! Instead, try "career development," "apprenticeship," "serene getaway" and nothing wrong with "performative," "experimental," or "turnt."

I build communities for technology events and products. This includes hackathons like the TRON DAO Hackatron and exciting, interactive workshops to explain what is NFT/blockchain.

Usually these events are public, see some past appearances.

Here is a paid promotional video I did for TRON vs. Ethereum.

Client list

(With permission)

Airbus A³ TRON DAO Arianee EY Dream Syndicate TreasureDAO Aleph Crypto Fund NFT.nyc BananaConf

EY, Arianee, Airbus A³, TRON DAO, Light.art, Origins NFT, Lucid Sight (MLB Champions), Dream Syndicate (Rawlings NFT), a checkout processor in the sports/events industry, TreasureDAO, Nebula Revelation, Aleph Crypto Fund, a hedge fund, expert witness for investor lawsuit BananaConf, NFT.nyc, Fog Works, Namefi.io, Kred, EPIK Prime, DLT.education, GenoBank.io, ---, SOMOS Bustamante Labs,

Client brand projects

Xbox Breitling Lacoste Merck Animal Health Moncler Quintana Roo SOMOS Ancestria

Let's work together

Join a cohort of successful teams & projects and get the help you need.

💪 Building yourself?

1 hr/week

Public X Space call

Do open source every week with me on the Community Service Hour live call and podcast.


  • 30–60 minutes every week
  • Live on X and Twitch
  • Published to YouTube, TikTok, podcast
  • Open source only, no private code
  • No in-depth code review
Apply to Speak

🚀 Building a company?

2+ hrs/week

Private call advisory

I work with promising projects to launch their creator community. See my advisory services.


  • 2 hours per week or more
  • Private calls with your CEO and CTO
  • Publicly associated as "technical advisor"
  • Open source and closed source projects
  • Code-level review and auditing
Enroll

On stage, travel

Learn about emerging tech, public policy and entrepreneurship at my workshops and speeches.

NFT NYC 10 year plan
NFT 10-year plan gives the three phases of NFTs: tech artists, traditional artists, physical products
Emerging Technologies for the Enterprise
Architecture design for blockchain projects is a blueprint for scaling your blockchain project and its infrastructure
Funding science research
Funding science research inspired from the the first data DAO in the 1900s
Estonian regulatory climate
Baltic regulatory climate, and the end of money laundering
Innovation in Estonia and leading EU
Innovation in Estonia and leading EU, how this one country has successfully deployed online voting, citizen services all using decentralized systems
Bled Strategic Forum
Initiatives in the Balkans, and the future of government transparency

This work was sponsored in part by Ethereum Foundation and Microsoft.

On stage
William interviewing ministry officials, Estonia, 2022

Press coverage

Self portraits for media

Shipped

Here are some products I brought from idea to market. Includes commercial successes and failures.

Foggie is a backup device that comes in pairs. All your files, always backed up, to two places.

physical device

19 Questions is a machine learning game that asks you questions about the world.

open source bayesian statistics

Nineteen Eighty-Five is a modern printing of the classic George Orwell book. Orwell’s protagonist battles with his own incriminating #searchhistory, the prying eye of the Social Justice Warriors watching him through his smart device

open source Amazon KDP

SEPTA OTP is my recommended changes to Philadelphia rail schedules which the transit authority has incorporated. It also documents late trains, which you can use to excuse work lateness.

open source patent

Who's the Impostor (谁是卧底) is a party word game for 3–12 players. Ranked in top 100 charts for MX, CN, RU.

open source iOS

Light.art NFT drop is a series of NFTs published by high-profile professional photographers. Sold out for 100 Ether in hours.

open source

Echo lets you hear yourself and native speakers to improve pronunciation. This helps with language practice, speech pathology and accent reduction.

open source iOS

23andMe privacy kit by GenoBank anonymizes your DNA collection using physical shuffling and end-to-end encryption.

open source packaging design Ethereum Rinkeby

Formant Analyzer helped my wife improve vowel pronunciation (born in China living in USA) and is useful for speech pathologists.

open source iOS

Su Squares is the first NFT using the ERC-721 standard. This ushered in an era of new applications and enormous media coverage.

open source Ethereum Mainnet

Scribe Academy is one of several online training program launched through Pacific Medical Training and accredited through American Medical Association.

Anasquare is a word puzzle published nationally in GAMES magazine.

open source

System Bus Radio implements an AM radio on computers and phones that do not have radio transmitting hardware. Unclassified implementation of TEMPEST data exfiltration.

open source

π

Extra stuff for stalkers

Math

Active projects you can join

Photography

  • My wife and I run a boudoir photography studio. Check out https://glamourphilly.com/

Things I made that you can buy:

More music:

  • Only (and music video)-- my award winning remix of Nine Inch Nails's song. I was a winner in WYSP's First NIN Remix content (2005) and got to meet the band. My track was runner up and the other guy was published on NIN's next album.
  • Air the first track my wife and I made together. Based on Air by Dzeko & Torres.

Civic projects:

  • EMCCC, PA Eastern Montgomery County Chamber of Commerce, PA, co-chair government affairs committee board. We work with local, state and federal government representatives to connect local businesses with elected officials.
  • SEPTA rail scheduling I consult with SEPTA to help set their rail schedules. Also, I independently measure On-Time Performance of all SEPTA trains. If you are ever late for work because of a late train, use my website as proof so you have an excuse. Patent application.
  • Philadelphia Traffic Court Philadelphia Traffic Court made national headlines throughout 2014 as its offices were raided by the FBI and 9 current and former judges face indictments on 77 counts. I successfully petitioned the Philadelphia government to make public their entire database of traffic violations. Now lawyers use it to appeal old tickets and some people have used the data to find evidence of wrongdoing.

Civic projects:

Contributions / big projects

Zero-day research, code review

👀 Crypto projects lose all their money immediately when they get hacked. Don't get hacked. See my white paper review & code review services.

White paper review and business planning

Including technical and business review. Weekly cadence with CEO and CTO working on execution. See achieved outcomes on my advisory page.

Open source every week. For yourself, for your career, and for fun!

Personal

My sizes

  • 39L/40L suit
  • 33 slack / 33 inseam
  • 15 1/2 - 34/35 shirt

Best marathon time: 9h : 13m

Birthday: 1985-07-01

NFT gallery

My art collaborations, 2018–2021

Pixels:

Su Squares

3,000+ minted

Art (all 1 of 1):

NFT HYPEMAN × WILLIAM ENTRIKEN

0.4 ETH

Genesis: Commemorating the First ERC-721 NFT

Sold 15 ETH

The Birth of an Idea w/ @conwellsclub

1,000 NEAR

All Kindsa Media w/ Julio Slim, Indigo Cowherd, Will Gaines

1 ETH

On the road to El Chalten w/ Elia Locardi

Sold 0.1 ETH

Golden Landscape w/ Heidi von Son de Fernex

0.1 ETH

Ella's Dreams w/ VjDeliria

1 ETH