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: 2575
Hash: 7ee0236ac2fd3ea3573a30d5aefacffa0e7f88f6c874b014684297457a94f746
Previous block: 7dd120ec780a9242e55b1e552732933dbddcab0df454c398773428798d0ccf77
Next block: 0c9a80c184028b187f72287ede26c11594b3a44dfd8941db8db9efc297edb34e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847316
Stripped size: 218
Size: 254
Nonce: 2
Merkle root: a564a3c8017160e8e74780a882250d988d60d22763b863a56e84fdcc406f4b44
Median time: 1743847315
Difficulty: 4.656542373906925e-10
Confirmations: 68
Chainwork: 0000000000000000000000000000000000000000000000000000000000001420
Bits: 207fffff