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: 1452
Hash: 37fc59206fe030c25637971e2345cdaa4eec51c0a207a4108bde57161dd7df16
Previous block: 611e0774b4c4ff8b6597756c759ec24ed6ed22cd44669729047bed48190e8bcf
Next block: 397903abc1a599fa302c304878e1a5b613419fd669d7e124a2ff74a21861b0a4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697649
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 131a44dd2d82b2147e801bd6726087e0d6e148c618702ed610c87239955118c9
Median time: 1718697649
Difficulty: 4.656542373906925e-10
Confirmations: 792
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b5a
Bits: 207fffff