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. mzaGu

Height: 560
Hash: 3b47b7d077a8dccd5f428c0ed62865b3d9d933a167d4d2b04301b8eff702b35e
Previous block: 44831f74f62aae6eb772eb7448b00af6734dc1f1fab1fd6d38fc692cda003552
Next block: 1b110ff1e6d2bde25099fbf605f3f4668d4d3e1265f180824ccda9542d57a959
Weight: 948
Versionhex: 20000000
Version: 536870912
Time: 1564711422
Stripped size: 228
Size: 264
Nonce: 0
Merkle root: e6e84a68182eae41100a7f49b3e8d18946a65ab6d43303da6c72ca6e3e8246af
Median time: 1564711421
Difficulty: 4.656542373906925e-10
Confirmations: 44
Chainwork: 0000000000000000000000000000000000000000000000000000000000000462
Bits: 207fffff