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: 2503
Hash: 6f1df86e88176712106c6bf322338cc211edc6a18ae3475e19b748bdc018ba77
Previous block: 01676fbfb648237f7806d60bb2071a30b68b66e14915d7b8144b6b1a0e75ceeb
Next block: 40ccf9a6a78a3a63ae15d8f3fbdffd5c33c604510c2f451fa8ea01407577108b
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847304
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: fe34faa38b44b07f30d3941dc54c50a552bbe233d0bc9aaf87ff44c135c0bc39
Median time: 1743847303
Difficulty: 4.656542373906925e-10
Confirmations: 140
Chainwork: 0000000000000000000000000000000000000000000000000000000000001390
Bits: 207fffff