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: 2454
Hash: 06314d239c1c3e2efa14c0aab5f83cff0fecdf56c0d3ff0995dc036dfd44f925
Previous block: 6ebdf64f7dd0e5acdefad77774a09a07372eb48fd64944b441fc033e729b2d40
Next block: 5b3596744249094b15971bdcac64725cee24d0688c6d8c450ff2d398b3626215
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847296
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 7400ecad846c5494d1ee3042adbffc94d950d25b53e50bcb0c96027fae8eea43
Median time: 1743847295
Difficulty: 4.656542373906925e-10
Confirmations: 189
Chainwork: 000000000000000000000000000000000000000000000000000000000000132e
Bits: 207fffff