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: 692
Hash: 152fea46971cc20404c254f4e2158a0a1da461e109acdab8edbf1eb75893bc0c
Previous block: 28c9d3170344edc8cd103586405d3103b5f5895978927a5b524483bdf79c843d
Next block: 16fa440398094e0d82ca3ab387a821fd5b93fa5081ec569ef0a68e4dd467e299
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864259
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 784d67300fc777bbae06db011de900a536e0be639b5b50a1dd6e3f9df50944da
Median time: 1701864258
Difficulty: 4.656542373906925e-10
Confirmations: 1552
Chainwork: 000000000000000000000000000000000000000000000000000000000000056a
Bits: 207fffff