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: 2297
Hash: 420fde101dea22f61e458c20ce19d70045e6254ed1da55dbb75d609838a52ad4
Previous block: 780236e86331c84947d848e32c82d6cd85b811cac5651124fbdebfbc5a32236e
Next block: 749f6912467d712d7296c5a0fc10141f5dc3dd014355f6239c901616103ed948
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847269
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: a1e28906288e5ec4e73a7e1445d805ebeddffc5ce9f5a1e96005c111695396b4
Median time: 1743847269
Difficulty: 4.656542373906925e-10
Confirmations: 346
Chainwork: 00000000000000000000000000000000000000000000000000000000000011f4
Bits: 207fffff