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: 1589
Hash: 2b8453c6926b90d9d0127ef743d9282668204eeb6855d7a881910a78e5c799b7
Previous block: 4a022abe2b1ca7aabbc95a26c164f420f081e26cbc36a94d7a4eb8e4f5bc2bbd
Next block: 40db10512995df9ac64c9619a5667083ce8e4aa074103a1a39e8235ec4e165d3
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697672
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 6fffaac9358f57f7a2e1cde69fb235a07f1be8b8697b1aeeeecfc7109794ad84
Median time: 1718697671
Difficulty: 4.656542373906925e-10
Confirmations: 655
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c6c
Bits: 207fffff