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: 1573
Hash: 2844bb00530cdd8bc6b0ac7ad5644b4c1d6e4a12bdf2794a335d191b19c9aa63
Previous block: 11b82c070ca46c5a4373bc938708f751d798b79940cb61252bc6f41f220335fe
Next block: 58d418ef6bb3c7e6e19c3413c83c0adf98d173337949ce41ed40c964d1b052e2
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932132
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 676ba4f68b1e2d81adff0e772e432d71fd5f10a50a376d27d2036bd4209542b8
Median time: 1708932131
Difficulty: 4.656542373906925e-10
Confirmations: 36
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c4c
Bits: 207fffff