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: 2604
Hash: 4534a326c79e9568b4351790290dae913e0c153793685ca5985af8bbe1b3bfd7
Previous block: 47b38f15cf6bdee95e16972b0e71c2ad4b2abff6958d1cbd62c152cbaff7fd17
Next block: 6d4c41419861e18deaef544efb10af070510fbbcc75eeaadc865414bd3f0acc4
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847321
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: e1c7967c00fb77f3f832ec90fdb57d523ceda44a382da3a684ef12f2da84402c
Median time: 1743847320
Difficulty: 4.656542373906925e-10
Confirmations: 39
Chainwork: 000000000000000000000000000000000000000000000000000000000000145a
Bits: 207fffff