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: 520
Hash: 75e5d0c39ea6fd34610d63b6b1b7f5d3b049797cbb36838db540b39c23d5e35a
Previous block: 01c9ccfc5e32b8aca26369d5a71093990158f5da0960802824eb492c17563457
Next block: 70aa714251a394ca7599223e605416749a6484c41e8b84a5a86fa6dc83b5375e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864230
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a5a3f626a0b996374b2c969b2a71a5fcf6eb29f4e569be5e5b8822bdb3a34a99
Median time: 1701864229
Difficulty: 4.656542373906925e-10
Confirmations: 1724
Chainwork: 0000000000000000000000000000000000000000000000000000000000000412
Bits: 207fffff