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. mxMfLjAez

Height: 1239
Hash: 649495a7f146a1f11289acc68d7dc78407d155d38f40ffc2bbba8742c139d451
Previous block: 7a4686cf98d3a10468ba55b49a6815740db5bfd53affb72cd89a2cf298c2cfaa
Next block: 52988d66ccee40d0f3cc7660e493746ced0bc2e7d47a54346788093e1fb6b0f7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697614
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: b77a39efdff747501b42f4057fb80832233e589b3dc14fa8b9b315e6883368c0
Median time: 1718697613
Difficulty: 4.656542373906925e-10
Confirmations: 1005
Chainwork: 00000000000000000000000000000000000000000000000000000000000009b0
Bits: 207fffff