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: 2019
Hash: 50d74f8df23311ddefdda052832357d4aa4b503bed49bd783772550484748673
Previous block: 79540abe8b59cd486cb8d8216bcd3c31a8dfbd7e284a0ab446d0992bf223390e
Next block: 581fa6788ef6c8de716fe9cfceeedd8ebfac32c07fa2226b30e1e4992c55587e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964773
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 84d5f34fd3372c0d99ccb6d7e59fbddb52e9b93a5805d4564411682dbe1e58e0
Median time: 1728964772
Difficulty: 4.656542373906925e-10
Confirmations: 225
Chainwork: 0000000000000000000000000000000000000000000000000000000000000fc8
Bits: 207fffff