MethodHow the figures are computed
Block numbers are exact. Everything with a date in the future is an estimate, and says so.
The countdown
- Era of block b
- ⌊(b − 1) ÷ 5,000,000⌋ + 1
- Reward of era n
- 5 ETC × 4^(n−1) ÷ 5^(n−1)
- Next cut
- first block of the next era: n × 5,000,000 + 1
- Blocks left
- next cut − current height
The rule is ECIP-1017. The current height is read from the chain; no date is typed in anywhere.
The estimated date
- Average block time
- (time of the latest block − time of the block 100 before it) ÷ 100
- Date of a future block
- time of the latest block + blocks left × average block time
A change of 0.1 s in the block time moves a cut that is four million blocks away by about four and a half days. The date therefore moves; the block number does not.
Chain readings
- Source
- public Ethereum Classic JSON-RPC nodes (chain id 61), read by a central collector once a minute
- Calls
- eth_blockNumber, eth_getBlockByNumber, eth_gasPrice
- Hashrate
- difficulty ÷ average block time
- Blocks in 24 h
- height now − height stored 24 hours earlier
- Era start dates
- timestamp of the first block of each era
- Miner shares, uncle rate
- counted over the newest blocks seen, up to 1,000
When a reading fails, the last good value is shown with its age, or the panel is left empty. Your browser never contacts a node.
Not measured
The exact circulating supply: it needs every uncle reward since 2015. The site shows genesis allocation plus block rewards, which follows from the height, and the range ECIP-1017 gives for the final supply.
Transactions and active addresses for the whole chain, the number of reachable nodes and pool names behind mining addresses are not shown, because they cannot be read from a block header.
Bitcoin in the comparison chart: past halving dates are historical; the curve after the last one assumes Bitcoin's ten-minute target and is an estimate.