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: 351
Hash: 542e1d9d0acb367ee7ea984aa8fd8c4cc929dfc16303a43052d493fe6c863ef9
Previous block: 1bb2337b4eb772d8630b3893ffd9a27cc0e324fb5a1280522928c36af5626fbe
Next block: 35d14b0dd984070dbb51515150b46fbd2476cb89e6316da6d06c5b3205c45447
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597926
Stripped size: 218
Size: 218
Nonce: 4
Merkle root: 25f04ef57dfe724240c05ab4561b519e619d26f36558b6372cf8f2b60e5e7396
Median time: 1701597925
Difficulty: 4.656542373906925e-10
Confirmations: 1893
Chainwork: 00000000000000000000000000000000000000000000000000000000000002c0
Bits: 207fffff