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: 1519
Hash: 6a6cfb48b545c96983685a44b61ffc8511fb6048a11f04753b04c3ee47b51ad1
Previous block: 3778c00137d7b8cefc73ad4ab344ecb922109676b8a271becbd18a8998a0a172
Next block: 5e5f50d28b69664382effb6c927a3b89a544d3548476950bc38cb596831b63da
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697661
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 62d576454bc91aca8c2930a9cfc5e92fe6f4cc8177b0380af9dde1e29123d0f1
Median time: 1718697660
Difficulty: 4.656542373906925e-10
Confirmations: 725
Chainwork: 0000000000000000000000000000000000000000000000000000000000000be0
Bits: 207fffff