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: 2234
Hash: 6ba425f46674ea24f144a1b3fd3559373502596668c77bd8d16216d0b5ef0c5a
Previous block: 38ceb31d77b9a11215c7e92517c006add7cde37fed63e8586f19e7ef29195149
Next block: 25e9322dd735d70647e02a8314d4c50143e4b0c12116a7e51f0356bd1202431e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480982
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a2b51fae78176ba2dfbd83abf3e0c28f9dbe5564393e7b79fa09afe02a316044
Median time: 1719480981
Difficulty: 4.656542373906925e-10
Confirmations: 58
Chainwork: 0000000000000000000000000000000000000000000000000000000000001176
Bits: 207fffff