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 github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mgqFp9Dhy

Height: 2161
Hash: 51a58f953b4399dd1759ca72a41fe3f900d7358f63e65af6b4513492fb1ea479
Previous block: 6aa2ad10ae7d01b7c59e1e2ba194691aedad0a7511563869d9fa0ce524a82a4b
Next block: 1798b0e17a59017fd10b1b36b4564a4cf8d00581c41484b4b69110a6f45ac4f2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964797
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 6195b9c2b28c393d9d066404780287a4ba64f16a09bc3eb3e6fda70e6d38ea14
Median time: 1728964796
Difficulty: 4.656542373906925e-10
Confirmations: 83
Chainwork: 00000000000000000000000000000000000000000000000000000000000010e4
Bits: 207fffff