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: 1458
Hash: 16f76d98d4a8ab43d3c493779c4b022e016a3d2c8b7309fcce6d352e106047b8
Previous block: 0bc75b55dea20c56ab82510050d0e1d9039a83e7060cfd069883a11ce8ba1e15
Next block: 757e068848d64906bcf9a95f6ce48bb6acd198d72bcb8f0e1576a81e0e8a87e0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697650
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: f254d322d8fe62d399d505ef1ca6c544ec0c9f6d96c376583441f9c802bd9b43
Median time: 1718697650
Difficulty: 4.656542373906925e-10
Confirmations: 786
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b66
Bits: 207fffff