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. mkrgsKuFE

Height: 192
Hash: 55a75137721698c3a803564162abf1c192576e45ed469ce84ea50d89270acea0
Previous block: 7ab664df17e13564256bb4fc886207b806dc6a96e60a7ad708febb5c6ac05ac0
Next block: 60add3f63845d47803b9e149a276f24d5ab0ddc785623f4460a173b0b42675c1
Weight: 912
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1544074765
Stripped size: 228
Size: 228
Nonce: 0
Merkle root: f70ae5c05bfbaa8c0d36db7f04d745e30963d40f016a73425c9b220fbcba5e0c
Median time: 1544074764
Difficulty: 4.656542373906925e-10
Confirmations: 10
Chainwork: 0000000000000000000000000000000000000000000000000000000000000182
Bits: 207fffff