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: 1773
Hash: 77600faa99eabe2b7a2adcd8a5922962ce853ed0a51b18f7d9bfffdae9b27a65
Previous block: 12742197df762a6611837439fa03afb17896375ad196f019626f8a6362eec2c2
Next block: 65d68d7221e5d6f7fb78a0a09eaf222a9e50ac719abd7e6b25b6dbefd4f66de9
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159219
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 178da606cbe3a9051a32a529abdf636ab7773790bb18d9860b71253525c220fc
Median time: 1719159218
Difficulty: 4.656542373906925e-10
Confirmations: 471
Chainwork: 0000000000000000000000000000000000000000000000000000000000000ddc
Bits: 207fffff