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: 1942
Hash: 2054883f57085de98d7c2baca75f63a7fd753ca74328ef3319e10880c4dba171
Previous block: 44cd98ddee6e182603616031ad0b16b64c7b89d2c180a383b3032451d9d70955
Next block: 164b0ce376e14eb6308b2d710fda2c9e8d4fef1433b5d79c2297937406ed732c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159247
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 72cd580d8f997588f05953e83fc7d8160d0707f4c407f428430902d1a705a8fb
Median time: 1719159246
Difficulty: 4.656542373906925e-10
Confirmations: 302
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f2e
Bits: 207fffff