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: 1541
Hash: 57bd747c9dcd1c54b90d694e24435f3517ceeeb3cb9437a16b9f2352124ffbd2
Previous block: 2cb0e0a2b7e673f98ed62fc6c542a06d0df27b84f78f82a2d3fcd850d9700d90
Next block: 3ff504ad1f6df4a47e460f22c20104561b64b046338bf056a22adaa47c7a04ab
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697664
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: b5bc49dd6d65dbe6bb5cbaedf2794c0b312fac20e46ac8136151af94909db747
Median time: 1718697663
Difficulty: 4.656542373906925e-10
Confirmations: 703
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c0c
Bits: 207fffff