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: 1572
Hash: 11b82c070ca46c5a4373bc938708f751d798b79940cb61252bc6f41f220335fe
Previous block: 2cbc5df5abdbf556d3dc728bc08924fbb91dcc40f798044a2a2d3732d7d594d0
Next block: 2844bb00530cdd8bc6b0ac7ad5644b4c1d6e4a12bdf2794a335d191b19c9aa63
Weight: 908
Versionhex: 20000000
Version: 536870912
Time: 1708932131
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 62d4d3af53af1bd69a4463d68287321e50cd5dac971c619212cceb974f0e8f35
Median time: 1708932131
Difficulty: 4.656542373906925e-10
Confirmations: 37
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c4a
Bits: 207fffff