Smart contract signatures
4 May 2017 Overall, the effect of UETA and ESIGN is to allow digital signatures to have the same effect as a physical signature. Congress wanted to allow Smart contracts, enabled by blockchain or distributed ledgers, have been held multi-signature payments, escrow services, and so on are already in place (see Invisible smart contracts on the bitcoin blockchain. Read the Its appearance on the blockchain will be no different than an ordinary multi signature output.