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: 419
Hash: 722efb8466c271676290531d5aefefedb09c2df9e8b8ef58fa5168e582854533
Previous block: 5257966162a28030f0ff14f6c97c0e16832f63ebcab50ae7ec6844b229edeefc
Next block: 41876e61ea4da454581b76b7a7c969364d4e0032b3ff96de09949b22092fef4f
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864213
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 68e365b65b2a4931cfbb5f358e614af4218d834f8bc835afb42ef150907249a8
Median time: 1701864212
Difficulty: 4.656542373906925e-10
Confirmations: 1825
Chainwork: 0000000000000000000000000000000000000000000000000000000000000348
Bits: 207fffff