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: 2252
Hash: 03fbd2cd7427f0827e8f72a04f496558a86ba08cafa25376a2d38847e91caf81
Previous block: 17a82520198fb67e90bb51d8fcd31dfd0b982768bf284e5a4a935d1d825f0775
Next block: 773f4e317a30b721d4a7909ea22e36354fa583360f810c805a526cd3e28fecb6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847262
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 31bc5c522a7be941b86ab3d78fc745c19b1969f68db67bd5277dc351ba506ea3
Median time: 1743847261
Difficulty: 4.656542373906925e-10
Confirmations: 391
Chainwork: 000000000000000000000000000000000000000000000000000000000000119a
Bits: 207fffff