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: 2337
Hash: 561918cd66a058eada4ea0155e094a642eb8dfac8e3c68c864e8f5a053d5fb06
Previous block: 087af6e60adf02bf7f0193ffd3fb3917fa37b52ab9a3b7cb35b041e2159aec71
Next block: 3c7497a6a166c6a982fd34edb783a59b24283ed37460d8ed0aca61bf1638bf42
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847276
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 32329a9ec958fb1a7a0d44da36aa97a198288d05278e0a427c13e6a38c6d6769
Median time: 1743847275
Difficulty: 4.656542373906925e-10
Confirmations: 306
Chainwork: 0000000000000000000000000000000000000000000000000000000000001244
Bits: 207fffff