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: 115
Hash: 54b6b2b82f57cc628b134a6f85858573391787c10fcf14a400947a02fbe32a8f
Previous block: 7b89de45abf92065fa90abf50c45debab1fb2f02abdccb373dd4e7f5079feb4d
Next block: 0908a5abd6b8181921aede39ac22299641efe826fa1c128c3a2406b0940c27ce
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597886
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 20d2ce87f4a5111900a8c1512b20a0e0f59a5cd4bd204cbc4001bdbecd51b180
Median time: 1701597886
Difficulty: 4.656542373906925e-10
Confirmations: 2129
Chainwork: 00000000000000000000000000000000000000000000000000000000000000e8
Bits: 207fffff