ECDSA signature verification in Script
sCrypt has implemented ECDSA signature verification algorithm in Script to verify if an arbitrary message is signed by a private key corresponding to a given public key.
Articles By Xiaohui Liu:
Schnorr signatures on Bitcoin
In this article, sCrypt shows how to implement Schnorr Signatures using the original Bitcoin Protocol. Schnorr is an alternative algorithm to the ECDSA algorithm currently used for signatures in Bitcoin.
Introducing Learn sCrypt
Learn sCrypt is a series of lessons that split the development of an on-chain game Tic-tac-toe on the Bitcoin network into interactive chapters.
Access blockchain data from Bitcoin smart contracts: Part 5
sCrypt's Xiaohui Liu demonstrated how to implement relative locktime in Bitcoin without a new opcode in part 5 of accessing blockchain from Bitcoin smart contracts.
Non-custodial Bitcoin vaults
sCrypt has developed a smart contract-based vault, where Bitcoins locked inside can only be transferred after a user defined time delay.
Access blockchain data from Bitcoin smart contracts: Part 4
In part 4 of accessing blockchain from Bitcoin smart contracts, sCrypt’s Xiaohui Liu explained why the total number of transactions in a block is important and how to obtain it without a trusted third party.
Access blockchain data from Bitcoin Smart contracts: Part 3
sCrypt has devised a technique to fetch block height trustlessly, which is included in Coinbase transactions in this edition of how to access blockchain data from Bitcoin smart contracts.
Netflix over Bitcoin payment channels
In this post, sCrypt’s Xiaohui Liu demonstrates a cost-efficient way to provide movie streaming and other types of services on demand, based on payment channels.
Access blockchain data from Bitcoin smart contracts: Part 2
In this article, Xiaohui Liu further explained how to access blockchain data from Bitcoin smart contracts and how it could be extended to include a chain of blocks.
Access blockchain data from Bitcoin smart contracts without oracles
In this article, Xiaohui Liu shows how to access blockchain data in Bitcoin smart contracts with minimal trust and provides an example of how to use that data to generate pseudo-random numbers.
Zero-knowledge key-statement proof
In this article, Xiaohui Liu introduces nChain's white paper #0488 titled "Zero-knowledge key-statement proofs” a special ZKP where the secret is a private key corresponding to a known public key.
ECDSA-based oracles on Bitcoin: An alternative to Rabin signatures-based oracles
sCrypt has developed an algorithm to verify arbitrary data from a certain party in Bitcoin smart contracts; it is based on ECDSA and reuses native keys to generate and verify signatures directly.