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: 214
Hash: 710ccbc1a38c6f0deb45a21dd674af35fd1c8c80a205936aae92fceefe25458c
Previous block: 204b1728b72d87737f4c1ae8fb3b04a92f0d2ef6924b93973ef58ef6ab614d40
Next block: 0e136713823bf281a2328cfd3d1efc1d1ab58a1bbec8441c50323ff70d89b0bb
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597903
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: cdee9e4cb723c001efeec022a7d02225ebf5471b45f704c42e0ccd642d4790e3
Median time: 1701597902
Difficulty: 4.656542373906925e-10
Confirmations: 2030
Chainwork: 00000000000000000000000000000000000000000000000000000000000001ae
Bits: 207fffff