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. mgqFp9Dhy

Height: 2188
Hash: 686819fb835a683aef7ff4962c5a82ebb723a79f936c75f3060237955bd12c71
Previous block: 6d791255501ce86f2395372478743f9bc31af146dd31eb54a9a3bb298c83cbce
Next block: 6bb993e818e6f1283e092957bf13104b991ef96775c44b5dc40d73318d62ec71
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964801
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 39b91479a68f590694b33a775979a910a9b83e3c43b7733c94597af717deb8a3
Median time: 1728964800
Difficulty: 4.656542373906925e-10
Confirmations: 56
Chainwork: 000000000000000000000000000000000000000000000000000000000000111a
Bits: 207fffff