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: 680
Hash: 1152e6f751610a135fdd0fc1018bfc12538df06f01e680a44078203c464beb42
Previous block: 1960513359556388278b0178f7d73d3e555442f246bdb7753f72676e746fd343
Next block: 19b441ffa85fb2c10ac731dd795e68bf2f52568f34d15e3fa14ffd218fd22ebe
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864257
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4f31b17a41e766a4a5cdb29775329a403593136b090ada47a8e8e6b974fe8706
Median time: 1701864256
Difficulty: 4.656542373906925e-10
Confirmations: 1564
Chainwork: 0000000000000000000000000000000000000000000000000000000000000552
Bits: 207fffff