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: 990
Hash: 34bba2fa80149ee4d8994341772644d5fc8f9bc1a472b4b68230a92d958a5029
Previous block: 6298ea0fdbcc4a491408fe645f28371b976885019053cb94034fb396f2c3c9c7
Next block: 3608c0a2a89d976744c79431fbe417abf21b2e37fcd266848ad5770628e16b1f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857833
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 237e84f1172cf13f2b59e44f6aa3e5ca31a9b4f60cd3ed9a116ee9646d2554e7
Median time: 1707857833
Difficulty: 4.656542373906925e-10
Confirmations: 1254
Chainwork: 00000000000000000000000000000000000000000000000000000000000007be
Bits: 207fffff