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: 1717
Hash: 382c8df48675a22300b1aca545313be9f2a9d505c8bb4f9b03c78177bd2215c6
Previous block: 3a33051adfc99f7a2f0bf249855ace65be74e8dcf076d4437e4dd1f4c871183c
Next block: 1d55f72febd2a239691ad906ad337d9c73e2a8373ad43ae76f27d717e87247ee
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159209
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 328c513234266831b9637b066b02f6bd1915e9485a904e0e3142fe9b8e2499b1
Median time: 1719159209
Difficulty: 4.656542373906925e-10
Confirmations: 527
Chainwork: 0000000000000000000000000000000000000000000000000000000000000d6c
Bits: 207fffff