Method get_block_by_number

chain/src/blockchain.rs:52–60

(&self, block_number: U64)

    }

    pub(crate) fn get_block_by_number(&self, block_number: U64) -> Result<Block> {
        let index = (block_number - 1).as_usize();
        let block = self
            .blocks
            .get(index)
            .ok_or_else(|| ChainError::BlockNotFound("current block".into()))?;

        Ok(block.to_owned())
    }

    pub(crate) fn parse_block_number(&self, block_number: &str) -> Result<BlockNumber> {
        if block_number == "latest" {