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: 2389
Hash: 6eb377a5816dae51b365400d71c9f9cecdb061aab7d827a96aaeffaae63f33e4
Previous block: 61d61fc0523d72e6c614feb251d90c4346e055c2596f45dec4f0796137427f6b
Next block: 4e7f8930a31ced3176866403bf00bc1023a63d1e24e2a6420c6ae85fcc99f425
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847285
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 782899ab5ecbcc3466a1c423d8a2afe57a3c671bd2fecedb29eded41b734347f
Median time: 1743847284
Difficulty: 4.656542373906925e-10
Confirmations: 254
Chainwork: 00000000000000000000000000000000000000000000000000000000000012ac
Bits: 207fffff