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: 1518
Hash: 3778c00137d7b8cefc73ad4ab344ecb922109676b8a271becbd18a8998a0a172
Previous block: 6d6bd5805ea1be23f630106c4d53fe08cf9faa805ab5d52a36b20dee64ac327f
Next block: 6a6cfb48b545c96983685a44b61ffc8511fb6048a11f04753b04c3ee47b51ad1
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697660
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8e90bd76aa2efd0803efb9163d84d8dff09ed6127c2651320aa4562145d4a506
Median time: 1718697660
Difficulty: 4.656542373906925e-10
Confirmations: 726
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bde
Bits: 207fffff