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: 2164
Hash: 0017011954e859016bbcecce7b0958a19b9be5cc8acdb66efc5fe907654eeb1a
Previous block: 648d7c0b8edb2a2c8c27c20c618d499fb1beb5ac22cbacba9fa12da34678c95e
Next block: 5dff1f0ce7005de2f407c2c76e625cfdcd2614c0a9d91ff03dacf5bd0f53d8f1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964797
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 1834b5223b8b2a723efd036fec26241d6c74c4b3e0f58dffa655320c81ef0d6b
Median time: 1728964796
Difficulty: 4.656542373906925e-10
Confirmations: 80
Chainwork: 00000000000000000000000000000000000000000000000000000000000010ea
Bits: 207fffff