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: 2109
Hash: 00ce899ca67a54a67954eaed06e73c6ad26eab971db33d1ce76c9aa837b289f7
Previous block: 4779799cf8b7bc3024877e74ba228b0e086ef86280331b66404832d41752821a
Next block: 1a10af1a68410f50e843c665143371d5ca79c002e09dea787217ab5b9dd74ef3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964788
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 25941ca28a3db788aa83906b5ed048d95d36c53c3502f9da1183074ba85263ed
Median time: 1728964787
Difficulty: 4.656542373906925e-10
Confirmations: 135
Chainwork: 000000000000000000000000000000000000000000000000000000000000107c
Bits: 207fffff