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Bitcoin Core veteran Peter Todd joins MARA Foundation
Bitcoin Core veteran Peter Todd has joined the MARA Foundation as lead maintainer of Slipstream, a private mempool service that allows transactions to be submitted directly to MARA's mining pool. In 2024, HBO identified Todd as a possible creator of Bitcoin, Satoshi Nakamoto, although the developer rejected the claim.
In his new role, Todd will focus on developing Slipstream as a platform for experiments with Bitcoin. Areas of research include classical and post-quantum security, as well as testing new mechanisms without making changes to the base protocol.
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Todd has long been involved in Bitcoin Core development. He co-authored BIP 125, contributed to the development of the Replace-by-Fee mechanism and created OpenTimestamps, a system that uses Bitcoin to prove that data existed at a specific point in time.
Todd to experiment with Bitcoin
Slipstream allows transactions to be submitted directly to MARA Pool, bypassing the public peer-to-peer network until they are included in a block. The service also supports non-standard transactions that regular nodes may not relay.
One of Slipstream's earliest notable use cases was publishing large Ordinals inscriptions. MARA later began using the infrastructure for research, including Quantum Safe Bitcoin and Binohash, a method for emulating covenants without a soft fork.
Todd previously developed Libre Relay, a Bitcoin Core fork with less restrictive rules for relaying non-standard transactions. He argues that mempool policy should take into account miners' economic interests and market demand for different types of transactions.
The developer said he plans to use Slipstream as a testing ground for experimental development and protocol-level innovation. Transactions submitted through the service remain subject to MARA's terms of use and applicable laws.
Slipstream helped move more than 10,000 BTC
In 2026, the service received additional attention after a vulnerability was discovered in Coldcard hardware wallet firmware. Owners of affected multisignature wallets used Slipstream to reduce the exposure of public key information while moving their assets.
According to the MARA Foundation, more than 10,000 BTC were moved from affected wallets this way. The organization also views the ability to keep certain information private until a transaction is confirmed as a tool for Bitcoin security research.
Meanwhile, MARA is expanding its infrastructure business beyond traditional mining. The company unveiled plans for a 1,200-acre campus in Matagorda County, Texas, with up to 2 GW of capacity, including infrastructure designed for artificial intelligence.
Earlier, we reported that MARA sold $1.63 billion worth of Bitcoin as part of a shift in its reserve management strategy. The company has begun using its accumulated BTC more actively to fund operations and business development.
This material may contain third-party opinions, none of the data and information on this webpage constitutes investment advice according to our Disclaimer. While we adhere to strict Editorial Integrity, this post may contain references to products from our partners.
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