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: 2567
Hash: 61e530c3183e3490c557152e121c8f89a8157aa05282acf4a5d3d79e6554fcf8
Previous block: 3048f8ec798dec53810e6d53cea1b125413048312cd23dd20ae84c76abfe6361
Next block: 0fbca0d85a5cb577938c2e071c8ed04e9668c471db00d1875bb7c63816918d8f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847314
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: c7bdae1327934c81611c0bb6a2f3383af4225908b9cb2a042b0f7d5074f44d19
Median time: 1743847314
Difficulty: 4.656542373906925e-10
Confirmations: 76
Chainwork: 0000000000000000000000000000000000000000000000000000000000001410
Bits: 207fffff