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: 674
Hash: 1399ce3b714ff5d63cc936d592c2a67ab19085a00d972145979a62ff7155f65e
Previous block: 56d3ef977b6d2bc5ef77ed34f3262d6557e2a9bf303d228b04bba3e43841e175
Next block: 7e0a46ea552a09f4a95f5c0e4f6a8b058b075e5960b5fdbb0a3ec9b829c3dafa
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864256
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: c7c9d7c09c8cf82c07a271baecd855eeb2505b0806e13373c9349ec2af1d2894
Median time: 1701864255
Difficulty: 4.656542373906925e-10
Confirmations: 1570
Chainwork: 0000000000000000000000000000000000000000000000000000000000000546
Bits: 207fffff