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: 1464
Hash: 1323ccd0bf2141124d4fa0c3ae67bc71d958e4623f896cbfa7b265d5fb7a8afc
Previous block: 4569dcc55248bc21af51b5c48c62674b2f0b45bf6737f8e1e8d77f2356e81cfc
Next block: 65ea94298c7c4e9672d7d5033014e09c3d61365d5120ca317f181e4ae5571794
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697651
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 5cca6ecfa6d50c73a244e17fea3ac4a418bfc5c446eafac1e317db51be5ca936
Median time: 1718697651
Difficulty: 4.656542373906925e-10
Confirmations: 780
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b72
Bits: 207fffff