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: 1713
Hash: 215377a5117a948a97613fd46eebd11937e6c9e11fe131fcea9d88222f18de81
Previous block: 49cbcf805a7ebd524cc58461aa666d2e56e10fd8a271185fe308bfe0460ec3b7
Next block: 38389aecf7af3240a7a1903d885e9e1bbad5993305d99fb41293c8ed7a18b5e6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159209
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 3ebdc0a65f8d7a9081ab6af7306a8b3a8fe78cea2675ede6e40c723d723b34c0
Median time: 1719159208
Difficulty: 4.656542373906925e-10
Confirmations: 531
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d64
Bits: 207fffff