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: 2271
Hash: 5bbd5019c198250c27cdf91113be942d545cf228028b753a6e5db6ee1e7f2a5c
Previous block: 1349d0b7d08c93e4d0fc9e5f70b3db062d1c9195e2ac0ed1d5e1da32c9a7b1e0
Next block: 693775a7fcbc309f8e66e7f57af3e3f48fb5a6bd97a937ec77ead83c849845d3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480988
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: ed90098b5d1e57e497acc35b445819fe410db1b2db549c186b5090e863276401
Median time: 1719480987
Difficulty: 4.656542373906925e-10
Confirmations: 21
Chainwork: 00000000000000000000000000000000000000000000000000000000000011c0
Bits: 207fffff