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: 1630
Hash: 1e8fd93b87f3ef3645478fa7556e97956127e068ccaa86a1035576eb20209742
Previous block: 26c7b7112f10f1c61620297bb24d063fee90e72f9a82071ce8de325ed77bdf13
Next block: 7c1df0894d112fa2c5292cba83ff392f9c4162e4ef7499a46aebd6130f02c8f9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159195
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: c51ca8ce6d13ff62254fe7237e463ee4be4ebc989df41ef1b33773f809bbf18e
Median time: 1719159194
Difficulty: 4.656542373906925e-10
Confirmations: 614
Chainwork: 0000000000000000000000000000000000000000000000000000000000000cbe
Bits: 207fffff