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: 892
Hash: 1b8f4febe118b8dfc2af53585cdf491a9490ec5141cd04cb0a823ef4476b3427
Previous block: 133143a83e841bca1b3826d42be50b6a89c7480a826766593c5a9a8ce81fb87f
Next block: 2c1d1f503b9640ec0a6220136a6c231d0bb88f286478313a46c47f8354800514
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857817
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 15df573066124994a80c19e3d4093064d9903e919d7ac2f9c202ef56ada06d4d
Median time: 1707857816
Difficulty: 4.656542373906925e-10
Confirmations: 1352
Chainwork: 00000000000000000000000000000000000000000000000000000000000006fa
Bits: 207fffff