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: 1339
Hash: 6c00ab3b85e1008a454d825e8fb4f797e02dba5a2faa7351f6b2f57e2d5d0e19
Previous block: 13cf611e7bacde33624bd6ec963709f5601f69453f63a40d5239d91fea9821b3
Next block: 71f0e6f2282596d469211c2acaa57e011df37d60771b3274dd79ff72054a5c8d
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697631
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: c3e9fd0b3af54d8a2ee0cf938aa39c85e2dc980895b9ccb7ccdf12b7e5c1ae3f
Median time: 1718697630
Difficulty: 4.656542373906925e-10
Confirmations: 905
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a78
Bits: 207fffff