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: 2212
Hash: 5abb784f6c19c9b86079cbe5eb3c60db3475ecfeb26d8d625c15945e8b749628
Previous block: 76e9aea8c1e3cce6cc460b8eace4b1bacf373280bcf316593fc25136d980530e
Next block: 09693b59d74b2134033da76d23e66856f71324b55e2ea77fa52476941c6dd309
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480978
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 517e37e5ebd97b85aa2f5df2252918b03443757253105e961ebccd0b0c7365a4
Median time: 1719480977
Difficulty: 4.656542373906925e-10
Confirmations: 80
Chainwork: 000000000000000000000000000000000000000000000000000000000000114a
Bits: 207fffff