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: 1583
Hash: 450b5a82487aa60c7fee7280ff6276a4cc0524933b9fd0281a43fa9ff1591985
Previous block: 530bde662c84cf503d30e451c2dc10109d01f16dd0c9e6c5aff344aa0c754ed8
Next block: 575899605bb2588930b180391139fa3fe15e20a433a78430ac979832b090945a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697671
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 7165cfc1dba52ef6784f18277c93407a81a94dbf09a9199e8f746aa2143bf818
Median time: 1718697670
Difficulty: 4.656542373906925e-10
Confirmations: 661
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c60
Bits: 207fffff