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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 2134
Hash: 32c39567ccad44a08fa75a2a3c714590d23f6120e7c6d16c04fd25b177b3b24c
Previous block: 4080d957f1f44c75cbad64e3928d4240fb902496c398958970aae1dec44b64d0
Next block: 1ec1959b19fdc83a692ed829ea531a5aef9621ad1650936ae62f90712beee655
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964792
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 57840fd30f88b929a3b4a8faa83d481cbd64c2a2ae5013775bdd629d6c217ab6
Median time: 1728964791
Difficulty: 4.656542373906925e-10
Confirmations: 110
Chainwork: 00000000000000000000000000000000000000000000000000000000000010ae
Bits: 207fffff