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: 1888
Hash: 787fc036020c1c1787282ed73727853f5528f2c3a33019591207be96d56e89ab
Previous block: 55c30ccb67908bdd721defb214f9573125a43111257945421bbba027915863c1
Next block: 0647c16788d5088d040e42cc50bdee5ef7084801bfcee2fbc026a97f8f134eee
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159238
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 3f6af9f0e13610b1c718f4c5fc49510783c8ad68a3a59c46bb93598272db71ae
Median time: 1719159237
Difficulty: 4.656542373906925e-10
Confirmations: 356
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ec2
Bits: 207fffff