FinTech Engineering
FinTech systems live at the intersection of correctness, security, and performance. Articles cover cryptographic building blocks, payment infrastructure, and the engineering decisions that matter when money is on the line.
How MPC/TSS Signs Blockchain Transactions Without Assembling the Private Key
An engineering explanation of MPC custody, threshold signatures, Schnorr, ECDSA, DKG, and why a blockchain signature can be produced without reconstructing the private key on one machine.
How to Split a Secret Among People
Shamir secret sharing explained with points and lines only — no polynomials required. Interactive quorum demo included.