Case Study · Blockchain & Digital Asset Custody
MPC Custody: BLS Threshold-Signature Wallets
A distributed-key-generation wallet where no single machine, party, or administrator ever holds a complete private key — signatures are produced jointly, verified on-chain, and a lost or compromised share never puts funds at risk.
5-of-8
Threshold signing group
BLS12-381
EIP-2537 on-chain verification
Zero
Parties that ever see the full key
Sepolia
Live testnet deployment
The challenge
A single private key is a single point of failure — lose it and the funds are gone, leak it and they're stolen. Traditional multisig moves that risk around but still needs every signer to run compatible on-chain logic and pay for N separate signature checks. Real institutional custody needs the security of "no one person can move the funds alone" without a private key ever existing in one place, whole, at any point in time — during generation, signing, or recovery.
What we built
Distributed Key Generation
8 parties, one key, zero single point of failure
Eight independent parties jointly generate a group public key without any party ever computing the full private key — each holds only their own share, communicating over a secure channel built for the protocol.
On-Chain BLS Verification
One signature, one cheap check
A threshold signature aggregates into a single BLS12-381 signature the smart contract verifies directly using Ethereum's Prague-hardfork precompiles (EIP-2537) — no on-chain signer list, no per-signer gas cost, deployed and tested live on Sepolia.
Shamir-Split Key Import
Bring an existing key in, safely
An admin can migrate an existing private key into the threshold group by splitting it into shares across all 8 parties — the coordinator that orchestrates the split never reconstructs or sees the original secret at any point.
Part of a wider Web3 practice
MPC custody is one piece of TeleCanor's blockchain and digital-asset work.
Multisig Wallets
Traditional on-chain multi-signer approval flows for teams and treasuries that need transparent, auditable co-signing.
AMMs
Automated market maker mechanics — pool design, pricing curves, and liquidity incentives for decentralized exchanges.
DeFi Lending & Borrowing
Collateralized lending protocol design — interest models, liquidation logic, and risk parameters.
Crypto Futures Technology
Infrastructure for derivatives and futures markets in digital assets, from settlement logic to position management.
Need custody that survives a lost laptop?
Let's talk about threshold signatures, multisig, or the rest of your digital-asset infrastructure.