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: 1457
Hash: 0bc75b55dea20c56ab82510050d0e1d9039a83e7060cfd069883a11ce8ba1e15
Previous block: 5e63d6bf05cd658dc49c4981bc7435993b8c0c0c2f6b52e9ad52ae64cdabe567
Next block: 16f76d98d4a8ab43d3c493779c4b022e016a3d2c8b7309fcce6d352e106047b8
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697650
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 68e6a5bbfc56b536576e2179c21f65dc6f6d07bf05c2b9f590d21a4f6d3216f0
Median time: 1718697649
Difficulty: 4.656542373906925e-10
Confirmations: 787
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b64
Bits: 207fffff