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. mgqFp9Dhy

Height: 2220
Hash: 1d502b0c906ab0de6ccc90733bb93001e2d331055b49a180e30af25aba47098f
Previous block: 4a74022ca078f98e29770d50c0167acf4f56df254f32d57aa5fdaae1b8f07b0d
Next block: 7d846c3695ad6669f132f358b90cba8417620ce51d39a278b6bb8cee6c22a1a8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964807
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 6993e84e21adc69a9b5c14cac913bef5b6196fd0ceadc8c808ec74f9c020f301
Median time: 1728964806
Difficulty: 4.656542373906925e-10
Confirmations: 24
Chainwork: 000000000000000000000000000000000000000000000000000000000000115a
Bits: 207fffff