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: 1877
Hash: 0756f92097cf53fb85a1d1c384caeb4f2fdbdc7385fc4b8a96de43ece2e4f73b
Previous block: 7cab6c7b1210b4f28d07977b8ab87c4db6d527ca47008c337bb47b3115f3522d
Next block: 48f26cd67c48eaedd161c398d5eca0607d24f48d62d0b5bf8e7283eaa1718055
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159236
Stripped size: 218
Size: 254
Nonce: 5
Merkle root: 06029eb39cb627c6aefa352c0a1b25f34df53b1fa3c95935d2222a7e11bf8505
Median time: 1719159235
Difficulty: 4.656542373906925e-10
Confirmations: 367
Chainwork: 0000000000000000000000000000000000000000000000000000000000000eac
Bits: 207fffff