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: 1236
Hash: 6544406f333aba516615de320323be33bc9a5dd4b7d7d114fd5d01b8ae20d5cb
Previous block: 22336f4036fb511d6d8eb8b464460fe26f3b33a74195482214ad9bdc4e677ac6
Next block: 3ceb35f1ec0b44974474bc025cdeaa71bd592fc31d1e6f6c43aa8f61e575cbf0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697613
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: daf08bbf7db09e1cc454e069ebbf4a7bf358c256e01c423c8ea8c568a0205e7f
Median time: 1718697613
Difficulty: 4.656542373906925e-10
Confirmations: 1008
Chainwork: 00000000000000000000000000000000000000000000000000000000000009aa
Bits: 207fffff