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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1568
Hash: 75d9db2e6b5a82245589e7a9c773012769f874580d8cc789f3c4326bfeb007e9
Previous block: 71b3b383534aeda1fb26c86e800b2eacd60fe4f8f4e5a621a08764bc57c85b43
Next block: 313f60d0451316a7d1238d6a0ee3ca5c393c2e0cb9db290ef15c7e005abcc5ab
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697669
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 3d3c34a35c843b26215f9f140fda0355bd140e54455b1f44d82ae54ae92c700c
Median time: 1718697668
Difficulty: 4.656542373906925e-10
Confirmations: 676
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c42
Bits: 207fffff