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: 111
Hash: 60a4211a0a161ae2a5697382b9110320241d17fe92b799c8abcf4f1ab5668508
Previous block: 54ec41a69b6d13314ab14551b6aa36107e90559eb6cdf50a4fff03ab0c1d2066
Next block: 4268d743e5d98d77e87e436139b49889e986981efa45e19401072e365457f127
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597886
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 74a69b5564588fc4b4ffd47bad9297bf6ed1d583fb8cac839937b3bb7886508a
Median time: 1701597885
Difficulty: 4.656542373906925e-10
Confirmations: 2133
Chainwork: 00000000000000000000000000000000000000000000000000000000000000e0
Bits: 207fffff