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: 439
Hash: 6181b6538c4cccd75042b76de1a3612cc8f9d547120a794c7b1fbc00389f3759
Previous block: 59de32f08e9701c11c952773c8b7596e1325103c25a3e1553baca4c118184e6b
Next block: 51c9d3abda0a54d5c99680db13eadfa673ca1d788810edef4d090964c39ad9a5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864217
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9e045d795e79c04f43e3e768dbf724ab7c4a4142b1910e4b9f95c412e6561c8c
Median time: 1701864216
Difficulty: 4.656542373906925e-10
Confirmations: 1805
Chainwork: 0000000000000000000000000000000000000000000000000000000000000370
Bits: 207fffff