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: 703
Hash: 408f63b728d3a110cb262aabf4be52f53d20d98d4c79448c9e38808e45cc1449
Previous block: 3979884f45473e50b1f44a3100bd4904f2d09c81b50212444020c98f2d21ac14
Next block: 4cbdebff741d9a3a0be0e1d611e4e470561c4c2ea9d0fcd71cb1b13d0c29f40e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864261
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 924cab14474d8cfd347ca9943a1ba47d4b7440fc27306328f6839cd7872c9d7f
Median time: 1701864260
Difficulty: 4.656542373906925e-10
Confirmations: 1541
Chainwork: 0000000000000000000000000000000000000000000000000000000000000580
Bits: 207fffff