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. mupBAc74k

Height: 1608
Hash: 7bb49de1251221ed431671e9e3b0e4f67665d638f354268defca3cf07a69db9a
Previous block: 5c60b479ecff7c0d5cb296d2af5967194cbec63e859dd8e9463aecd4c5d1339b
Next block:
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932137
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 980c2e025b33e10a5c09f04bd80db3fa7cc6dcaa68831ba98abe158a3ead49c9
Median time: 1708932137
Difficulty: 4.656542373906925e-10
Confirmations: 1
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c92
Bits: 207fffff