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: 2113
Hash: 3a5a0d53731e604d67160f0844c78d632d7942dbbeb6e9bbceb98c10ac5d5286
Previous block: 35a72aa022baa9c941d3db432bbec25e3641392076fe95fde83d54c64255f4ba
Next block: 26f9547a3fff09e2bc34c709d3148ce5a089ac069e61496f114c12978a34127f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964789
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 19befb898f29a8675d6446d8de9adc1e4a3f75fb425476871d7320f11e2e27db
Median time: 1728964788
Difficulty: 4.656542373906925e-10
Confirmations: 131
Chainwork: 0000000000000000000000000000000000000000000000000000000000001084
Bits: 207fffff