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: 1524
Hash: 38c844d4414ab3fb7f95bd5a055497a10d8090ad61fa5224f5035f006c431c78
Previous block: 0ddb323dc01d6f19417d3817d6418d7de59b154259cfe9d38367db645a72d61f
Next block: 6a0dc9fe58e9e1cc64a549d860e454a18179721889eb9f3b8e03a704836d8034
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697661
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: bcd31a589587241964b187ea484825cfe18c3414d829cbc42f87370bfa335a4d
Median time: 1718697661
Difficulty: 4.656542373906925e-10
Confirmations: 720
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bea
Bits: 207fffff