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. mupBAc74k

Height: 2252
Hash: 77c7171448d9cae65385fa62859e481b262c9a0d0038c8633c172ae3d3737b99
Previous block: 294e695ff6d2548d2a529c9a7ccd64e7c3a1267eb53371e262608ae3b06b57a7
Next block: 05b5deca24dfe251df58e3dc2cfb5e7ade10680b6b139e2503c685c47beed9fe
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480985
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 50d24b26bb047a6df2c57cb7365bab17803cdc217a7b585e20cffff62b57014d
Median time: 1719480984
Difficulty: 4.656542373906925e-10
Confirmations: 40
Chainwork: 000000000000000000000000000000000000000000000000000000000000119a
Bits: 207fffff