1. Bitcoin: A peer-to-peer electronic cash system;Nakamoto,2008
2. Ethereum: A secure decentralised generalised transaction ledger;Wood;Ethereum Project Yellow Pap.,2014
3. Bloxberg whitepaper, the trusted research infrastructure, v1.1;Kleinfercher,2020
4. Ropsten Ethereum (RETH) faucet. URL https://faucet.dimensions.network/.
5. Rinkeby authenticated faucet. URL https://faucet.rinkeby.io/.