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: 2273
Hash: 5a1f39dbd6a8604249037fda1e1649cda80f704bdd500de09d6894b316a08a5a
Previous block: 1139300035f2a94fe3c3622e41c047e918eb3abbe397505da09e99dbe0c7931e
Next block: 593e333554fb04d4801a9f5bf12f70bdfca71e953cf75a79d06a826f3976aee2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847265
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: ee71923623875f0e47a25676c4760d80200de0aedf99e35a859c469a5b33985d
Median time: 1743847265
Difficulty: 4.656542373906925e-10
Confirmations: 370
Chainwork: 00000000000000000000000000000000000000000000000000000000000011c4
Bits: 207fffff