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: 1600
Hash: 266668af95e16736953f8084971e31b089972fbd0bbde22a68ec945b482de8a4
Previous block: 745b3901e58b3f7d01d1bdcbd34ddbb91c52795e6b058b1bd71c7a20d385e866
Next block: 511e16d15d8eee70303467ea01fba41582a129d20f1d4587e03f1a7590e11334
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932136
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 3b694bd4293cdf3491936f2256e5e319b3758b7742bddfd8ba63524b194447dd
Median time: 1708932135
Difficulty: 4.656542373906925e-10
Confirmations: 9
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c82
Bits: 207fffff