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: 1780
Hash: 30c898c13dd7260a82b4e917281aa1552396bb3e1fa9b43a52787bc5c6c74f7b
Previous block: 5c9cbe8409c4607091c28c0d0ca0caaa6e4be69dcddf455c2f225d72f455c238
Next block: 1447f8ab8b1ad5d66ef8e34c20825b0f428dff5865fe0bbcc0b6f3561817d72f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159220
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 1cce2b38be72af958f28e8f9b6fdd39db10e9f6660d67ad130464dd044a63a5a
Median time: 1719159219
Difficulty: 4.656542373906925e-10
Confirmations: 464
Chainwork: 0000000000000000000000000000000000000000000000000000000000000dea
Bits: 207fffff