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: 2271
Hash: 689fe4b84ee035144df809022b892bdd4e30e23e1eeda5203817af24814ab221
Previous block: 72ac135183c9ed297291bc508125887dfb955bb54d83f637e0f11483d77e5b72
Next block: 1139300035f2a94fe3c3622e41c047e918eb3abbe397505da09e99dbe0c7931e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847265
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 31380cdecef39add596abaa8a2cafed2e021a758a27e2c3db2d2ff3faac67938
Median time: 1743847264
Difficulty: 4.656542373906925e-10
Confirmations: 372
Chainwork: 00000000000000000000000000000000000000000000000000000000000011c0
Bits: 207fffff