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: 1115
Hash: 66b96b2beb56becaa2a10eb393d8afe2b15454ba026030bc87d0b79b7c550df5
Previous block: 36c3a121f3e7cce4fa5e39b56a3765857c1a3019827d0776348f72aa4c445416
Next block: 528d9c2d8fb730ab386914c3e057873c0c6021eb0bf92dc1ae54fdeb276150bb
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857854
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8ade36a40f96122f49a9bb4aa576f11320a9d60e5693bc29fe39166d1dcba09a
Median time: 1707857853
Difficulty: 4.656542373906925e-10
Confirmations: 1129
Chainwork: 00000000000000000000000000000000000000000000000000000000000008b8
Bits: 207fffff