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: 47
Hash: 238161e17f5efb5bf6c05e148c36b29a6a863233124ef75056b6630b7486d463
Previous block: 67201aa38ca927201febaef31c1dbdd0a46ca3496730afdc4f727a40caa659ea
Next block: 5d6d5f1ec3879b123576462b5d57bda7b7d4fb66b6a561f1d57153f136c92dcb
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597875
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 0de1220722b147581c700cb60c80f62cab720082805ac42c6068c55f2505a4a3
Median time: 1701597874
Difficulty: 4.656542373906925e-10
Confirmations: 2197
Chainwork: 0000000000000000000000000000000000000000000000000000000000000060
Bits: 207fffff