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: 497
Hash: 65c71f5abf08d5265436e6427de58c6d06f67ca50707a15b9ac76d29ec535767
Previous block: 69fdcd3f831451552f2df14abb630b03cbc2cbc30f76dc14a44e6d156f1d9965
Next block: 648c538a36b073d460a85b576b0bb872d305a64d9ddbda2f24ca25e693e28753
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864226
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: dc53d53ce608269b1f34f2f53cca8fbc4dafafab1e0bedcb2e82bcafc5e2e723
Median time: 1701864225
Difficulty: 4.656542373906925e-10
Confirmations: 1747
Chainwork: 00000000000000000000000000000000000000000000000000000000000003e4
Bits: 207fffff