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: 1597
Hash: 03733eab65e907bbdcce5237214dfd90443d43107c11fb0fbf65b213d15e9fb4
Previous block: 7daba2d416a0d31c0a6243e471ffb76a0bbd0850b7d78fe5eed74d879e46176a
Next block: 1974ec04513d1b51769ad0a1d015e5887e7eb96f14b34888f813db17b99dde6d
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932136
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 71d3e1ccd76ec1f68cbbc8f93efc7caa9dc55033e23070b235d6d8ff1bb3850f
Median time: 1708932135
Difficulty: 4.656542373906925e-10
Confirmations: 12
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c7c
Bits: 207fffff