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: 1857
Hash: 63ec1c9286cac86567b33a4b428edf49ca1ccd2650970541504ea0610232db11
Previous block: 6606403729da86d1d18bd2bc56dcae6cdb7591bff9d257bf9339e29bdfda9239
Next block: 58d33b215499462092b41359fc0e26a17bd4614fe623f1bb4943e67cc8ffb6ed
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159233
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: af62d77c81216542cd64394776c882a0e68147174cb4e6f327610ddffb6c7c34
Median time: 1719159232
Difficulty: 4.656542373906925e-10
Confirmations: 387
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e84
Bits: 207fffff