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: 936
Hash: 4257c4d43c7a8e0150488fd9e45627e79194de11e8bd787505d92dc5539dfcd0
Previous block: 508e752121bccb3e60c06c13410e7bb048d2ead3c66c3016f4be25f5e1cbef56
Next block: 6be6100476de5c020c5276430264c298cee5ef5e70a5b713ade2e0208adbbaae
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857824
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 253922f6e71d9f5519ed755774c776969649340013a376422ae2619afd97a391
Median time: 1707857824
Difficulty: 4.656542373906925e-10
Confirmations: 1308
Chainwork: 0000000000000000000000000000000000000000000000000000000000000752
Bits: 207fffff