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: 159
Hash: 1b404f970b1c1a1b2d4df9ca5fcc11166544ab5de1ed1b8847c5832b0ecaa95f
Previous block: 57e047a9c842fcf3d2cf9f95a68e0bdc91d53f2ebaf50e60732d5153b04e8ac7
Next block: 466dc2b1448b1b410f138f7204fe57d1764e61d4d2c498e591b6cfdd87be5466
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597894
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: f652fdf945bdc770a7786b7e8259b69bd9744ac4c65167ce8674d7f89cb114a6
Median time: 1701597893
Difficulty: 4.656542373906925e-10
Confirmations: 2085
Chainwork: 0000000000000000000000000000000000000000000000000000000000000140
Bits: 207fffff