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: 2451
Hash: 7fd51c7fc4d09194ba14be078854c76c8bfd50ebc28888683a265b87e72d5f2f
Previous block: 0aa80edfccc90726b466f39f43464a44d9c3a844705a74b51ce308318b094824
Next block: 08ff25d1cad4eaa8f5bbb89a647c62af6e7958f076be2924bff82dde9411173f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847295
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 7cceffa21ead707f8976459e56f8743dcc79ab2937d4efd94786486bd936214a
Median time: 1743847294
Difficulty: 4.656542373906925e-10
Confirmations: 192
Chainwork: 0000000000000000000000000000000000000000000000000000000000001328
Bits: 207fffff