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: 1822
Hash: 77d58557df02e63aa2e57193d3816bd22611016ccd7a83167b93d2fcc52e985b
Previous block: 61531cbca507c72c974a2c725eab11a74f2de54947c180b0dc8c71f442b081f2
Next block: 33d8c26a19312e96aa754a4e47308a3e0042a1f814f26d235ee22b0e29e2dea5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159227
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 91cf0ceb500108c7e4b963756f63f181e228f28232a42cf253ec3e9b2cf57c39
Median time: 1719159226
Difficulty: 4.656542373906925e-10
Confirmations: 422
Chainwork: 0000000000000000000000000000000000000000000000000000000000000e3e
Bits: 207fffff