The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 2507
Hash: 6ee532258329b3053c5f1e7cb70858c0bfa590cdd41e611efadc9844aa4f52ee
Previous block: 71f145e476cbd937ba6315a65ea658967dbdb3aa50a1afac82221416651de2b6
Next block: 0db5757a35c6d459977a064585d5e6e2de4a014e94632758df529e79037ddfcb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847304
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 95d0a55740bc32aafa925b14ebbd1a66f396c1572fab80d7b57b118ac8df18dc
Median time: 1743847304
Difficulty: 4.656542373906925e-10
Confirmations: 136
Chainwork: 0000000000000000000000000000000000000000000000000000000000001398
Bits: 207fffff