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: 1028
Hash: 06c0b5e15b7c98fca4061c8b71b4bc419aad3f7ef8d49542d1fe970e8db0ced3
Previous block: 5a9d056a6fb51f298961b7aa2f9c8b672e1305d524321ac8d5baf605026a577d
Next block: 579e30feedb5298c9cef712454ebe6251625885236ca164ed36b9899974ca16e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857840
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: e616283eef3e6faca2a5f346a2d62eeb56ec95145ccc9c5c926c299681ebdb2e
Median time: 1707857839
Difficulty: 4.656542373906925e-10
Confirmations: 1216
Chainwork: 000000000000000000000000000000000000000000000000000000000000080a
Bits: 207fffff