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: 1562
Hash: 673131224af1af9353fa5906f340025ff1af98ff8a63f6bdf907a7a8b5777af0
Previous block: 2cbe95369340c805dd203bd7e3beba1cb33487345ec0601930652966d70114dd
Next block: 7c0677383a503c159629d0d61353734a42e37bb29280babae32f65fbceb338a2
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932130
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 6d5e9fec5e26f7c025b234535ec1e7e96c7261981d4d54e4db936ac8ec001b01
Median time: 1708932129
Difficulty: 4.656542373906925e-10
Confirmations: 47
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c36
Bits: 207fffff