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: 494
Hash: 33ffafd3c6b0281bf96e99db9de2590bdfc46f60ca03f77576de0bb19493e0f1
Previous block: 592a097972c12f966bb23b873d1db845eeee325f6580dfa26f04bce1a7de755c
Next block: 523c552a00db85b7d5c997e7bee4e80ba2e829914b2df12614a08fcc9d66fd34
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864226
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a20a9414a12f3ad26133e26ac0c563f12e8235664a011f4e3dc92453a965a745
Median time: 1701864225
Difficulty: 4.656542373906925e-10
Confirmations: 1750
Chainwork: 00000000000000000000000000000000000000000000000000000000000003de
Bits: 207fffff