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: 1559
Hash: 681c2d1a8affcb63f4c1acdbded6054e93624e6a28b31cda77f93e8c1ee71d8e
Previous block: 2e8f39c031b058bb94460075432a3ae35da31e4b4e0b4a9ecaa23d0f61a37f0a
Next block: 792ec49f241230f1df22fa57bf50370b40201381d9cef9dc18ffc0082e27ad65
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697667
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 69fdcb608226c7f91b2551d019612167aa4618f3aee1c6163596e14da8868763
Median time: 1718697666
Difficulty: 4.656542373906925e-10
Confirmations: 685
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c30
Bits: 207fffff