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: 1856
Hash: 6606403729da86d1d18bd2bc56dcae6cdb7591bff9d257bf9339e29bdfda9239
Previous block: 0797aed359e9188ddf88abcbb23bb0e57d6f1dbf41007e9e5b5b84b1202cc47b
Next block: 63ec1c9286cac86567b33a4b428edf49ca1ccd2650970541504ea0610232db11
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159233
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 83e71e6095172aae0ec239b1843f91f28ec67dfb1ab2ad70636577808dd23e84
Median time: 1719159232
Difficulty: 4.656542373906925e-10
Confirmations: 388
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e82
Bits: 207fffff