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: 292
Hash: 305e7f087394541424b3b9400f7884d4fd844887f2ead8d202bd82fa23b47331
Previous block: 624f2f3eb747ee4a4f06ea913e7b0aaf497f352b03f17d32a2f6c41dda4d2b60
Next block: 15f6642f0ad35ac00c8e49712a23b472254e2cd9968435e1d12fcd1711da8b07
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597916
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 993696307950dec65577644dec99c36fef28c5032f0e3fdb69f33989aecaba14
Median time: 1701597915
Difficulty: 4.656542373906925e-10
Confirmations: 1952
Chainwork: 000000000000000000000000000000000000000000000000000000000000024a
Bits: 207fffff