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: 235
Hash: 4d433cd5a5715e5cdfc18d2d3cbb7ac656c710a62a06df6c42a8683c3184c0a4
Previous block: 3beb8d7cd471e64e05bef3b7afe17af0e6c1b1252523401a6fdaa1fea8797331
Next block: 03e60d36af90e3163568cf91dfb76c207f8467282522b7eb37dac68a457c9765
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597906
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 5a68f96d7dea95f04c90ca29ea34b8b8ba739b94a7be2a13bf46a95146865250
Median time: 1701597906
Difficulty: 4.656542373906925e-10
Confirmations: 2009
Chainwork: 00000000000000000000000000000000000000000000000000000000000001d8
Bits: 207fffff