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: 167
Hash: 3da36bbac4d84f85ae76d9429bcbaaa07c425a07062a445c68e7dd1ebbbdcce5
Previous block: 251708b46785251e1061c2db9d03e0f5b0e7b47166c2cc451904e507522087eb
Next block: 1d0ed7846ffd38e3ce1e5bfe0a26e363e5f1abe0b8f09ecaec4495acc6eb2e0b
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597895
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: ea445461be88433ef10bdf4fcc77df33fb0ed69853255056e8da2e083d7eeb20
Median time: 1701597894
Difficulty: 4.656542373906925e-10
Confirmations: 2077
Chainwork: 0000000000000000000000000000000000000000000000000000000000000150
Bits: 207fffff