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On The Brink with Castle Island

Mar 30, 2022

Ben Gagnon, the Chief Mining Officer at Bitfarms, joins the show. In this episode we cover:

  • Bitfarms' journey to the public markets in the US
  • Ben's early efforts in flared gas mining
  • How immersion cooling could provide operational efficiencies 
  • Bitfarms' site selection methodology 
  • How Bitfarms secures power originally...

Mar 28, 2022

Michael Sonnenshein and Craig Salm of Grayscale Investments join the show. In this episode we discuss:

  • Grayscale’s filing to convert GBTC to an ETF and their advocacy campaign.
  • The comment process (details at:
  • Reactions to the Biden Executive Order.
  • Grayscale’s product lineup and the...

Mar 25, 2022

Matt and Nic return for more deals and news. In this episode: 

  • Brink Nation is officially moving to
  • Did blockchains 2.0 make fundamental scaling improvements?
  • Is ESG over?
  • Nic surrenders his eyeball sovereignty to Clear
  • A secret trick to get through the Miami airport
  • Bloomberg analysts think a spot ETF could be...

Mar 23, 2022

Jon Birnbaum, COO of Domain Money, a new investment platform, joins the show. In this episode, we discuss:

  • History and launch of Domain Money
  • Jon’s path into fintech and then the digital asset industry
  • Dimension of access to investing for the retail market
  • Domain’s product offering across crypto and equities

Mar 21, 2022

Celestia Labs COO, Nick White, joins us on the show to kick off our modular blockchain mini-series. Celestia is the first modular blockchain network, which decouples consensus and data availability from execution and settlement. Celestia implements a novel design to unlock key properties such as scalability,...