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. mressCpnG

Height: 200
Hash: 2679d9cfe4a3cf7c589fa403f258b37cb315269b65eb8d104a7b3c1067b3640a
Previous block: 337e42ffa966003161b6c6aaf002f16d33e0ac3fcf18efbe14a885125cd67e02
Next block: 250e67e1fd78e9646d16faa8f9b55f6ac477ce7146b831e50f1c912af45ee824
Weight: 912
Versionhex: 30000003
Version: 805306371
Time: 1544074767
Stripped size: 228
Size: 228
Nonce: 1
Merkle root: 23387f90291ce9d566e4326655d987c164af277596980af1dbf050cc1cf302c6
Median time: 1544074766
Difficulty: 4.656542373906925e-10
Confirmations: 2
Chainwork: 0000000000000000000000000000000000000000000000000000000000000192
Bits: 207fffff