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: 352
Hash: 35d14b0dd984070dbb51515150b46fbd2476cb89e6316da6d06c5b3205c45447
Previous block: 542e1d9d0acb367ee7ea984aa8fd8c4cc929dfc16303a43052d493fe6c863ef9
Next block: 173aa2ce690af5a904cee08395cbe234d1551396b82de2beb491a9e370423ae0
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597926
Stripped size: 218
Size: 218
Nonce: 2
Merkle root: fd1e8c8ad8b71790f6a97421f1780be63e70b287cb6243a1eb8202bdcece54a3
Median time: 1701597925
Difficulty: 4.656542373906925e-10
Confirmations: 1892
Chainwork: 00000000000000000000000000000000000000000000000000000000000002c2
Bits: 207fffff