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: 1700
Hash: 2469a836a7f4dd927e9acf1ccf5983e838031d980ae82fc3eea73b0fcd7c80d0
Previous block: 1fd41c09100bb71a539d2bf872eb00f99bacae8d8f74a00389e25e4da0a9e44f
Next block: 06bd60dfd47ac5aea23670040e69897dd58aaa97b5d062cea9897d3731c7e67c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159207
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1bfc12091ab77d8b824629f61e1cf815add998578dbe47f26c57d0ce09f29e44
Median time: 1719159206
Difficulty: 4.656542373906925e-10
Confirmations: 544
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d4a
Bits: 207fffff