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: 903
Hash: 5a0b2cc826f2b0749da53c574fe98f5eb833ded900a121fbd0ed733ef68c5c07
Previous block: 795e0162bcc7e7fdc252441e3006ff7a91a0b02d8570755c838553b47aa81ad3
Next block: 4cd7a415521f8347e88471a8c84c77b3ea65ba2b13c1b8f6e6ddc9a1852deb99
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857819
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 1be00001bc5381c2d601ba16ffe84cb46ad73734f0be384b9a065ea015deaceb
Median time: 1707857818
Difficulty: 4.656542373906925e-10
Confirmations: 1341
Chainwork: 0000000000000000000000000000000000000000000000000000000000000710
Bits: 207fffff