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. mupBAc74k

Height: 2215
Hash: 01d3ef9eaf49103b251f07839f61d668a8f88c8d683bfedac90f1c88af36434b
Previous block: 7d4ec4a4bfea6233f1add3a0f121601336d5af3a47d416ba5e3f9bd6f5856583
Next block: 760b6741f7cb6e9b06a1ce0e86b84fc0c741e549b0dedbb41eba8a2e42f8604c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480978
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d508210b0fd6fd169966cf3979dcfc322093e4aab74067ecc79fdbfd78d5aa2b
Median time: 1719480978
Difficulty: 4.656542373906925e-10
Confirmations: 77
Chainwork: 0000000000000000000000000000000000000000000000000000000000001150
Bits: 207fffff