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. mxMfLjAez

Height: 1592
Hash: 189a3b397bde9739bf9570dc6bf5a38edf283c5c4cab6aa6d5a34b86b434aaa3
Previous block: 3097cb1b6eeec1dc484e01207a90ed9b8410b6583be1ffc44f22d70e12077482
Next block: 2336de3e25cca1fa9aa7a7c78af59ab1c1abc1bc897bec0bf6fabaef5d5d6d23
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697673
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: cb58d79cb34eabfdfe77cfa52013c1e9d01f4dc6e04c5b8530f9f34c9acf0517
Median time: 1718697672
Difficulty: 4.656542373906925e-10
Confirmations: 652
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c72
Bits: 207fffff