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: 326
Hash: 33bd331f5bdfa01d33f87e30b9e5442247471149330940e15fa672e961e98214
Previous block: 7f56653ef64ae9871cd1399b48d6bd82772482d5ea67da0a60b9d87cf7d650ec
Next block: 4e94fdd236dd120b71b575c65efa97f2f3d3c447a9eab416e4d6a4add1c3b12e
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597922
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 76ce20e18dee5044acf33ca09e2ac6196da35a627f171d254f86f9fe0644c337
Median time: 1701597921
Difficulty: 4.656542373906925e-10
Confirmations: 1918
Chainwork: 000000000000000000000000000000000000000000000000000000000000028e
Bits: 207fffff