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: 2044
Hash: 2998ddcc2eb538338927a4888290c54f25e38fd6770c6bc339d3a070ba3033fb
Previous block: 31d6d28900f1b4e17b3ad5767e522d16720d77b47af88a0fc9b7ed4b54c4967d
Next block: 042f1de35379d3b694df275a70e7879bbd02e5024eab27b48523b77c953d95e1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964777
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 72144622460b10818315c848eb7aa1737d1f810f9695c07578835d953ad4a9e8
Median time: 1728964776
Difficulty: 4.656542373906925e-10
Confirmations: 200
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ffa
Bits: 207fffff