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: 921
Hash: 5079c843ec5f21cbb25f4c30a2bd05f93206fd253070cc2772da63ee30e353f3
Previous block: 65689bf95ff4b6f374fa75be3bfd048c8ab4e22c1613d5f796ac1fdd9d7e7300
Next block: 66d82931a8776791a3a173579c5f4aee3e532d3b2bdd9f1f0ecb6c38264847d2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857822
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: efa72f91e134e8162601b9608c66afb38f1950a44cd12a8c391ca0f01ca68d5f
Median time: 1707857821
Difficulty: 4.656542373906925e-10
Confirmations: 1323
Chainwork: 0000000000000000000000000000000000000000000000000000000000000734
Bits: 207fffff