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Crypto Custody in 2026: How Institutions Are Actually Holding Digital Assets
@blockonomist
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2026-05-13 04:26:16
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- Three models: self-custody (MPC multisig), qualified custodians (Coinbase Prime, Fidelity Digital Assets, BitGo), exchange custody (highest risk, FTX lessons) - MPC wallets (Fireblocks, Copper, Anchorage): threshold signatures eliminate single private key — 2-of-3 or 3-of-5 signing without key reconstruction - SEC SAB 121 controversy: required banks to hold customer crypto as balance sheet liability — would have effectively prevented bank custody; SEC rescinded in 2025 - The institutional stack: Fireblocks for MPC + Coinbase Prime for liquidity + cold storage HSMs for long-term reserves — standard setup for >$100M holdings
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