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.

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

Height: 1858
Hash: 58d33b215499462092b41359fc0e26a17bd4614fe623f1bb4943e67cc8ffb6ed
Previous block: 63ec1c9286cac86567b33a4b428edf49ca1ccd2650970541504ea0610232db11
Next block: 10084fac3b8b2d6dcda154c94c9471676ba907a6a32c5c07480bbc539d6cdd92
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159233
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 6f30bc3e37af66dceab0ab4bc982afa84b8287830e7b38563a0132071cf00b3e
Median time: 1719159232
Difficulty: 4.656542373906925e-10
Confirmations: 386
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e86
Bits: 207fffff