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: 1612
Hash: 7e7d73ef1fccc1e2233b029fdabb1009a70fcd42cb7e54d955adfd424397e6ea
Previous block: 5953b60b93bdd91b9ffb2ccf9f58e2709ad132b6470378690913712f7eab0eb9
Next block: 59adc8826fee88ec6b259ec4d3f4ee1793c7baf41365a0a6819ff79c1b61f9c3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159192
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 72de0dd2054756770b4b997a462bc370cb32a2a4ac382e1dc29b698e14c34685
Median time: 1718697675
Difficulty: 4.656542373906925e-10
Confirmations: 632
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c9a
Bits: 207fffff