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: 910
Hash: 255181414f64d28d724a577a8d4014633b258e54cb2190d22647b20592a921f6
Previous block: 77201d65ba6d792ceb6381d302ff4fdb2f8d8f134a699f25818ce37fe39ac7c3
Next block: 2b147848d78bd3a2ead34690f120e7bd56c465d8ebdf043a286615799d0307fd
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857820
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9040f5eb10accd1de3c3e61da7db3e95703d7a91f08eb50c7bdad71a477b8b4e
Median time: 1707857819
Difficulty: 4.656542373906925e-10
Confirmations: 1334
Chainwork: 000000000000000000000000000000000000000000000000000000000000071e
Bits: 207fffff