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: 2133
Hash: 4080d957f1f44c75cbad64e3928d4240fb902496c398958970aae1dec44b64d0
Previous block: 226140c47e964153a37e7a31a516804d3562c4fdd6c249afb404d95d16f00c18
Next block: 32c39567ccad44a08fa75a2a3c714590d23f6120e7c6d16c04fd25b177b3b24c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964792
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 19064d55ea240a6b33b59d280c5b7f9e1690a40f8cf9a6199d827cf05166561d
Median time: 1728964791
Difficulty: 4.656542373906925e-10
Confirmations: 111
Chainwork: 00000000000000000000000000000000000000000000000000000000000010ac
Bits: 207fffff