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: 2251
Hash: 17a82520198fb67e90bb51d8fcd31dfd0b982768bf284e5a4a935d1d825f0775
Previous block: 414d0fddcda123007e3e18c17d4ebeba6c79c0e1c652056cb97902f8246308be
Next block: 03fbd2cd7427f0827e8f72a04f496558a86ba08cafa25376a2d38847e91caf81
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847262
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 38dee0fc52368ba5d3151c299c1311d0bfea7b88e763638d7d7039c208abc1eb
Median time: 1743847261
Difficulty: 4.656542373906925e-10
Confirmations: 392
Chainwork: 0000000000000000000000000000000000000000000000000000000000001198
Bits: 207fffff