Threshold signatures are coming to Bitcoin, but getting them right is harder than it looks. Nadav Kohen of Chaincode Labs walks through his work proving nested MuSig is secure, the road toward FROST-style thresholds, and his upcoming scheme codenamed "Iceberg." He breaks down the famous Alice, Bob, and Carol 2-of-3 example and shows why the obvious approach actually leaks secrets.

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🔶 Shinobi — Bitcoin Magazine

🔶 Nadav Kohen — Chaincode Labs

Chapters:

1:25 — Proving Nested Multisig Is Actually Safe2:52 — Multisig on Top, Thresholds Underneath3:41 — One Schnorr Key Representing Many Signers5:09 — Ark, DLCs & Lightning Gossip7:05 — Privacy and Programmability Through Cryptography8:21 — Community Funds and Granular Approval Policies9:34 — The Alice, Bob & Carol 2-of-3 Example10:44 —Thresholds Nested Inside MuSig12:17 — Why Naive Nesting Breaks

#Bitcoin #Multisig #MuSig #ThresholdSignatures #Schnorr #Taproot #LightningNetwork #SelfCustody #BitcoinSecurity #Cryptography #FROST #ChaincodeLabs #BitcoinMagazine #BitcoinDev #DLC #Ark #BitcoinPrivacy #KeyManagement #SchnorrSignatures #BitcoinConference #NestedMultisig #BitcoinCustody

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