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: 2283
Hash: 68229eeb1dc6f05229e28c7e96f03a11a8b68d0a843819fcf75aaba27585b82b
Previous block: 2f67f792796dbe102caeb0a1ffe593d8d3b383b886d04b516f9d9c0d10aa0ba2
Next block: 57b8d4f04919e9d961de0ffc23c648283902b341d0677a09c58fab1a024f6583
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719480990
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 1666bd2a8991dfc38b3cad31ccfb00ed623600927a26dd7b2691a67975da2d62
Median time: 1719480989
Difficulty: 4.656542373906925e-10
Confirmations: 9
Chainwork: 00000000000000000000000000000000000000000000000000000000000011d8
Bits: 207fffff