TetzelCoin is a blockchain-based confessional that forgives you of your sins. Users confess their sin and pay what they believe their sin is worth in ether. In return, they receive SIN tokens in proportion to how much they gave, providing them with proof of their forgiveness. All sins are publicly and immutably recorded on the Ethereum blockchain. 85% of the proceeds from TetzelCoin went to RIP Medical Debt, a non-profit that buys and cancels medical debt. Named after Protestant Reformation-era figure Johann Tetzel, the project launched on October 31st, 2017 (the 500th anniversary of Reformation Day) and ran through December 31st, 2017.

TetzelCoin is an exploration on spirituality, technology and debt. You can read the full artist statement here.

The artifacts of the project included a website, blockchain confessional app, white paper, in person event, paper wallets, and a proposed installation for another live performance.

Credits: Leanne Luce (Designer), Shoshi (Legal Advisor), Mike Huff (Event Collaborator), Joshua Penman (Composer).


TetzelCoin In-Person Confessional, 2017
Installation and Event at The Convent, San Francisco

TetzelCoin in person event photograph with Will Doenlen
the artist issuing tokens
paper pamphlets from tetzelcoin

Confessional Booth, 2017
Installation and Event at The Convent, San Francisco

confession booth

TetzelCoin Paper Wallets, 2017
Inkjet on Paper, 4 x 6"

tetzelcoin paper wallets
paper wallets san francisco

TetzelCoin Event Performance, 2017
Music by Joshua Penman, Machine-spoken word written by Will Doenlen

event musical performance and speech
musical and wrtten word performance at tetzel coin

TetzelCoin White Paper, 2017

TetzelCoin White Paper

TetzelCoin Website and Confessional App, 2017
Website, viewable on tetzelcoin.com

tetzelcoin website and app mockups
Table of Sins
tetzelcoin confession app screenshots

TetzelCoin Installation Proposal, 2018
3D Render

proposed installation plans for tetzelcoin second confession event
confession booth installation proposal
Leanne Luce