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

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mkrgsKuFE

Height: 1564
Hash: 427d34527224e7be5c236068c4f227015ea433c6da0e1a08f1b687d31f0108c5
Previous block: 7c0677383a503c159629d0d61353734a42e37bb29280babae32f65fbceb338a2
Next block: 62adad5bc09ad1fe06809d6720ba7ebd961e34f105998860af19181bb2e01b5d
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932130
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4792bd78fe9c5d4c01c66ef514ec0ce41d585e731fe28d982245e8aa538395ba
Median time: 1708932129
Difficulty: 4.656542373906925e-10
Confirmations: 45
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c3a
Bits: 207fffff