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: 2268
Hash: 27e7f4df62bf48a19cda532fe211ef2b241cf2124f87eef3d5cb73f935038c6e
Previous block: 3d9b95bf0516fe65fa0a23cf7a4742a646d522621b4fa787683084b0668b2425
Next block: 25762e2cdcb72ffeddd5865530c1980894aa7ec568811e13199a4bf14caaf60c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480987
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 730b7ccb06296f73f5db9a007b4f53cb0eb26492259adc94b21d5dbb68c28bf5
Median time: 1719480986
Difficulty: 4.656542373906925e-10
Confirmations: 24
Chainwork: 00000000000000000000000000000000000000000000000000000000000011ba
Bits: 207fffff