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: 1601
Hash: 511e16d15d8eee70303467ea01fba41582a129d20f1d4587e03f1a7590e11334
Previous block: 266668af95e16736953f8084971e31b089972fbd0bbde22a68ec945b482de8a4
Next block: 7b219e039002f619805e61d0f81753a2ff2af88c222bb5b059f2abbd9790c6fe
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932136
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 7474e2a76824eb8f9f3216c684d0aed4d794c4a46dc9944c574d9cd7ad6ff786
Median time: 1708932135
Difficulty: 4.656542373906925e-10
Confirmations: 8
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c84
Bits: 207fffff