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: 1513
Hash: 2848ab8200f43188fd78343a9b3b325e6f881285f0daa4dc517658da91f48f2f
Previous block: 2f3d75d6ae3ab1e7154a262fddd9c93ed4cf335dc35ecfa212684abf369bcec1
Next block: 06377da1213de07ce465254175d1f79b975785a70da5c9b1708f4bc973f4d4b0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697660
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: acb9c2650cb6de4897cd57c69b0e5ea3e87b1f06e34cba161031c9552c74d450
Median time: 1718697659
Difficulty: 4.656542373906925e-10
Confirmations: 731
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bd4
Bits: 207fffff