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: 89
Hash: 2a9add10d422b5c32a4bf90b6186cda16e0a127e381503345ec370a7c77ed862
Previous block: 01e592b716c47352976ad08d97f4b152bc2c3c702ddfe48946db727970022b7a
Next block: 607657fd19c3ff54fbaf41a2a13dfd7b802d42bcd5550aa8560bf2540221a55d
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597882
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: 7ecc73ca72fb670723559121ebf39ba87ddce654440f6ee389fa3f706540a97d
Median time: 1701597881
Difficulty: 4.656542373906925e-10
Confirmations: 2155
Chainwork: 00000000000000000000000000000000000000000000000000000000000000b4
Bits: 207fffff