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: 732
Hash: 748373dc7e99796dc5ddd6f030fbcc7740ef9eab4d5720a991e19b11c36d5d00
Previous block: 2f375d57eb581b1a2417598c9e152fcb5b92349678858328e39bdd4d589e58ce
Next block: 58d2a982f12f67d7381121f75e5d310e63a9fcc88366b15c933651652dfc34d3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864265
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: c8dbede616a015faa5f51c1f28a94d5d723fe74be2570f5e4588342ccd5e932f
Median time: 1701864265
Difficulty: 4.656542373906925e-10
Confirmations: 1512
Chainwork: 00000000000000000000000000000000000000000000000000000000000005ba
Bits: 207fffff