Peter Todd
Bitcoin core developer and applied cryptography consultant
Peter Todd is a Canadian software developer and applied cryptography consultant who was an early contributor to Bitcoin development. He studied at the Ontario College of Art and Design in Toronto before pursuing a career in cryptocurrency development.
Bitcoin Development
Todd became involved in the cypherpunk community as a teenager, communicating with figures like Adam Back and Hal Finney. He became a Bitcoin Core contributor and was known for his work on transaction fee policies, replace-by-fee (RBF), and his advocacy for keeping Bitcoin's block size small during the scalability debates of 2015-2017.
OpenTimestamps
Todd created OpenTimestamps, an open-source project for creating provable timestamps using the Bitcoin blockchain. The system allows anyone to create a cryptographic proof that a piece of data existed at a certain point in time.
Early Ethereum Criticism
Todd was an early and vocal critic of Ethereum, raising concerns about the complexity of Turing-complete smart contracts and the security implications of the platform's design. His critiques contributed to broader debates in the cryptocurrency community about the trade-offs between Bitcoin's conservative approach and Ethereum's more ambitious scope.
Back-links
Other pages that reference this:
- Taylor Gerring Photos (Articles, January 25, 2014)
- CoinTalk 015 – BTCMiami Debate Featuring Ethereum, Mastercoin and Bitshares (Videos, February 06, 2014)
- The upcoming crypto-singularity - Coinscrum (Videos, March 10, 2014)
- Early Days of Ethereum - Episode 9 - Amir Taaki (Videos, December 31, 2025)