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: 327
Hash: 4e94fdd236dd120b71b575c65efa97f2f3d3c447a9eab416e4d6a4add1c3b12e
Previous block: 33bd331f5bdfa01d33f87e30b9e5442247471149330940e15fa672e961e98214
Next block: 4919e9b95181e7abf38530b9eb22136ca9865108281158216015a2a765acf473
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597922
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 390fdb8fbf5acc1617840b1d5a7eb3134dfae39acfaa586c90d157d3f3779ab3
Median time: 1701597921
Difficulty: 4.656542373906925e-10
Confirmations: 1917
Chainwork: 0000000000000000000000000000000000000000000000000000000000000290
Bits: 207fffff