###rchain钱包
- rpc接口：LastFinalizedBlock，获得最新验证成功的block信息，拿到blockNumber
- rpc接口：GetBlocksByHeights，指定blockNumber区间，获得区间内所有block信息
- http接口：http://observer-exch2.services.mainnet.rchain.coop:7070/getTransaction/{blockHash}, 获得交易信息
###github连不上问题
# connect github.com
52.74.223.119 github.com
203.208.39.99 gist.github.com
66.249.89.104 github.global.ssl.fastly.net
203.208.39.99 assets-cdn.github.com