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. mgqFp9Dhy

Height: 2170
Hash: 0b6c9d6cf37bdcf4617e49ab90046d731887969ae5a4e95aa85e9c547203b580
Previous block: 39aaf3e21158b15e3bfc7b69bdd390f3b06cfdfcf857d412c33bd2b9b21b8577
Next block: 5bda53167835e210007f5ad0c00c9fa9725b901f3000f349a96308758a4dd6f5
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964798
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5d7e4939670b9a90718f82d36c5d3f4c35823f24b622569304e258af04c6bd92
Median time: 1728964797
Difficulty: 4.656542373906925e-10
Confirmations: 74
Chainwork: 00000000000000000000000000000000000000000000000000000000000010f6
Bits: 207fffff