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: 1578
Hash: 202fc7f705c97ebbaaa56d8150f596234f3c7b705efb94b63330d06c2d946ba9
Previous block: 27256e538de5d8ffb64e3a0c20dd4e8d738b149feb1dccb4bea1beceaae7a5b4
Next block: 0157e6d0d4d058cf353912d7a3cf22e4d697c620583d9aa381da409722368a49
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932132
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: 85c0f254765d4ea99ec8de7bf7d45fcd3db2f336096d6271955908de7646859a
Median time: 1708932132
Difficulty: 4.656542373906925e-10
Confirmations: 31
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c56
Bits: 207fffff