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: 1845
Hash: 457fcc3556e2349c11b8bae2b14827ca083da0a68cadded55cc5d918d27b9894
Previous block: 644b3d56f1849d27b35b044801306f022a222dff46e9acfe7aa91dd813515a76
Next block: 1cda0bd3e8328dd78bc3e68ba3ace076aae8eba85461876c3fc35eb542672736
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159231
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 6dfa83b7adca474896ac92dbe2f5a864fedb0ae5a487e6e062fdb735f2d6e95b
Median time: 1719159230
Difficulty: 4.656542373906925e-10
Confirmations: 399
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e6c
Bits: 207fffff