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: 2140
Hash: 4c201105d66207c48eba27aa960a4368a1973fda2b2c3ecdca48a9ac33c4e785
Previous block: 7ed61e1cf8f5751b43c6ccd016c7e2fb861095d9df27d38c86001ba337343e5e
Next block: 763d5a38795b622dad3e361e5e4dd0f48563c4a3e4127b9a2161412281ba1e04
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964793
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 90a6e32fb40d27d86ea83c0e52ac81869cf90213e0030223798c572e92a6a8f4
Median time: 1728964792
Difficulty: 4.656542373906925e-10
Confirmations: 104
Chainwork: 00000000000000000000000000000000000000000000000000000000000010ba
Bits: 207fffff