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: 844
Hash: 43adb6e1707405058864a622bfcdda7db8ca6c880e7376620b47fa7f37e21f3b
Previous block: 3eb7624bb5c9a5ade7414850327ce5df8ec91783dfe3503f85f7d066b1e64ef5
Next block: 4c1984adf7564a2e8fb49e6dca8c57177c6e2309194ab9bb327cde9aff7caede
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857809
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 4b1727299c8d60316c648f7ab4107e0d3854632660bd25c41a7e93f747f71bbf
Median time: 1707857808
Difficulty: 4.656542373906925e-10
Confirmations: 1400
Chainwork: 000000000000000000000000000000000000000000000000000000000000069a
Bits: 207fffff