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. mupBAc74k

Height: 2226
Hash: 1c70ee099b7e5d46b8f012a400a4f8fedace0c44d10b04a8018b1374c338b3ca
Previous block: 286373f618cdf311c14698ab73906ba4c90dd98bbc703545e10becb6d907a120
Next block: 7cac91beaf181a4e0428b7c99c40427a85a95b2fdcdd771eeaac3389d9bcfeea
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480980
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 86a8d273c8eea6d95035fceab023180a452da11128158221f790bfc18f3f5a8a
Median time: 1719480979
Difficulty: 4.656542373906925e-10
Confirmations: 66
Chainwork: 0000000000000000000000000000000000000000000000000000000000001166
Bits: 207fffff