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: 87
Hash: 15a7446d7e4779f55f6b611e09af628a13e4fd821cd9e1e2961f454c10f939d0
Previous block: 676ccfac183b80d400d19bc53233ba3489be1074570a30327a7102866b7ec9d2
Next block: 01e592b716c47352976ad08d97f4b152bc2c3c702ddfe48946db727970022b7a
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597882
Stripped size: 217
Size: 217
Nonce: 0
Merkle root: 277a1b72d82e58efb45639cf307136c2cf3c6666980798c213f4eec92ac1e53a
Median time: 1701597881
Difficulty: 4.656542373906925e-10
Confirmations: 2157
Chainwork: 00000000000000000000000000000000000000000000000000000000000000b0
Bits: 207fffff