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: 1539
Hash: 6a717fa1d519454d490df80b6d94216d279a14af0077f282ed4b06e54448bfdf
Previous block: 21789edbc45f5697ae5ae68f2f9eb94484766fa13ff3d4f9a089d8fe12f5002f
Next block: 2cb0e0a2b7e673f98ed62fc6c542a06d0df27b84f78f82a2d3fcd850d9700d90
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697664
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 97e73daf0740ed227de24b01c2188a22a9dd688cb2c9110203b0fa6b3728bc55
Median time: 1718697663
Difficulty: 4.656542373906925e-10
Confirmations: 705
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c08
Bits: 207fffff