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: 808
Hash: 0dce52b340df4bcde2c0fcccb84d358da266a24592c2326aa3c062f1162b3a67
Previous block: 390ed67520f94c2fc326bb5865062ba2a53dff6f5595e67a9fc818a2d30443b3
Next block: 10edb9a98f4767757103a0ce7aff24c4330592ed5d8dc719ab544adb35fb2c40
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857803
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 94725cb7edd1a47ac5f50d4f008e9edbba37d1535d2da441df9f60664bdfb622
Median time: 1701864277
Difficulty: 4.656542373906925e-10
Confirmations: 1436
Chainwork: 0000000000000000000000000000000000000000000000000000000000000652
Bits: 207fffff