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: 569
Hash: 4b753b434bbc2ad46bf12aa27613201f1e7fb5bce67faddd4054da9b1279ec12
Previous block: 0eee1105d2082584391b947be4b131255489a240aa27ae6cb7b64631eb1e80e0
Next block: 608512d3a95c01e6dfdbbfb282d4b220dfc1a9fff18ab61d5754a36de1d4b639
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864238
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 6d1510dac426088570082d632879266c23eba11374d3223a491ff7555da05099
Median time: 1701864237
Difficulty: 4.656542373906925e-10
Confirmations: 1675
Chainwork: 0000000000000000000000000000000000000000000000000000000000000474
Bits: 207fffff