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: 2279
Hash: 575366fd94571d46cec72440bec6a30c4d753fe447612c97d049fa1a4d0ad9fc
Previous block: 62783f0fe4b7538ae381d65468dcce30ee2433e684d91184323c0f1f6c3894fa
Next block: 16f82ed4c93215e46b30462c732dfa41959a6b704535855f7cf939af0a3e73de
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480989
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 7c7c201d807e4f6f40e8948390d0292306f8bdeb9d787ad64d4e0b3bb2f06b15
Median time: 1719480988
Difficulty: 4.656542373906925e-10
Confirmations: 13
Chainwork: 00000000000000000000000000000000000000000000000000000000000011d0
Bits: 207fffff