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

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mzaGu

Height: 570
Hash: 609c11d6a880bf5047b5a0674238ef416ea534c3ad8911950e46baa793cd622e
Previous block: 547f39a6352c753e5d17aaabdb63e0f64a86963ec53655ed97e3479f6fa4f48d
Next block: 34cb1aad43ba3a9d90ce0ce345846585e43474bb27186389153b15317ebbc789
Weight: 948
Versionhex: 20000000
Version: 536870912
Time: 1564711424
Stripped size: 228
Size: 264
Nonce: 0
Merkle root: aadb7c47eeb3475aa6527c37463e45b48b156836c82017ff0671efdf26e8e280
Median time: 1564711423
Difficulty: 4.656542373906925e-10
Confirmations: 34
Chainwork: 0000000000000000000000000000000000000000000000000000000000000476
Bits: 207fffff