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: 493
Hash: 592a097972c12f966bb23b873d1db845eeee325f6580dfa26f04bce1a7de755c
Previous block: 31072a0f281c8d98b5cf397304c6d40e0bbbf030ff4851846e3999d69621e2bd
Next block: 33ffafd3c6b0281bf96e99db9de2590bdfc46f60ca03f77576de0bb19493e0f1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864226
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 1ba7a1ab92983050c58b6ae2f5854f341408bff32b4c02f7d2011e29f06993dd
Median time: 1701864225
Difficulty: 4.656542373906925e-10
Confirmations: 1751
Chainwork: 00000000000000000000000000000000000000000000000000000000000003dc
Bits: 207fffff