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.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 281
Hash: 5b1fa858783469db04284a77a1b540e0096abab07b2fc9387aec0adc86f875a0
Previous block: 408e33cddfd1d9a52b9f92d017338474c58307d52396e9218841f92ef9620e0d
Next block: 2beb27c9c1e1305b054d4ca1d0f60b0584a96eb1e0e48246cef4a536c0bd5efe
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597914
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 35969795182d53e76b113484311b3248419d6f96c87641c9b95301dd72300f86
Median time: 1701597913
Difficulty: 4.656542373906925e-10
Confirmations: 1963
Chainwork: 0000000000000000000000000000000000000000000000000000000000000234
Bits: 207fffff