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: 2605
Hash: 6d4c41419861e18deaef544efb10af070510fbbcc75eeaadc865414bd3f0acc4
Previous block: 4534a326c79e9568b4351790290dae913e0c153793685ca5985af8bbe1b3bfd7
Next block: 6aba59787bb9fc65d4012b770b6a5f7312d9ff31998cfc8c3955652b57f18875
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847321
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: a80bc4c93e3a9546c601ee7c048269a9f9b8bb2d90c545a0a1a6d393fc02c1dd
Median time: 1743847320
Difficulty: 4.656542373906925e-10
Confirmations: 38
Chainwork: 000000000000000000000000000000000000000000000000000000000000145c
Bits: 207fffff