$BTC custody update from Blockstream: 2FA-protected accounts relaunched in their app. Multisig structure they built in 2019 is back—email, SMS, and authenticator options for transaction signing.
Operational note for custodial risk management: This is self-custody infrastructure, not institutional grade. Relevant for retail flow and smaller treasury ops that can't justify HSM setups. Multisig reduces single-point-of-failure but SMS 2FA remains a known attack vector (SIM swaps).
No material market impact. Useful for teams needing lightweight treasury controls without full MPC or Fireblocks-level infrastructure.
Operational note for custodial risk management: This is self-custody infrastructure, not institutional grade. Relevant for retail flow and smaller treasury ops that can't justify HSM setups. Multisig reduces single-point-of-failure but SMS 2FA remains a known attack vector (SIM swaps).
No material market impact. Useful for teams needing lightweight treasury controls without full MPC or Fireblocks-level infrastructure.