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: 1401
Hash: 02cfff99334a170da6fb88d22505276e65dbc9d1a3520ede266ba1ad3cae92fd
Previous block: 227154cec7aaa83686c502ae8efc0f9ec22376f4637f08491c28addf376f2110
Next block: 0633e5bb9d3849d410e6c3d854bf4a8d7a3f29dc7d064852edad5ae626f4aa14
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697641
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 113031231a2fb80f667428cfc46d7f05fcfd43df6f8951239afb7e033e140de8
Median time: 1718697640
Difficulty: 4.656542373906925e-10
Confirmations: 843
Chainwork: 0000000000000000000000000000000000000000000000000000000000000af4
Bits: 207fffff