Peter Todd, a longtime Bitcoin developer, has joined MARA Foundation to lead Slipstream, a private transaction-submission service that sends transactions directly to MARA’s mining pool without first using Bitcoin’s public peer-to-peer relay network. The service handles transactions that may fall outside standard relay policies, including large Ordinals inscriptions and formats used in BitVM-related experiments. MARA has also positioned Slipstream as infrastructure for Bitcoin research, including quantum-resistant transactions and Binohash, a proposed covenant-like approach that would not require a Bitcoin soft fork. Slipstream drew attention during the response to a Coldcard firmware vulnerability because private submission can limit transaction-data exposure before confirmation. MARA said more than 10,000 BTC has been transferred from impacted wallets through the service, up from the more than 9,000 BTC previously reported in the existing account. Todd is known for Libre Relay, co-authoring BIP 125 and creating OpenTimestamps. He has advocated permissive relay policies and said Slipstream could serve as a proving ground for experimental Bitcoin development. Todd has also been publicly identified by HBO’s 2024 documentary as a possible Satoshi Nakamoto, an allegation he denies.