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: 1999
Hash: 4a0ad33b312f1d8ec9012f2b68f615c63bb81c62cb9888e91581fd3cdfd413c2
Previous block: 45f3ac733855db8077d21b1e511c8c210801be613f34d2096549f43bc6f1b1fa
Next block: 11f4c5a2fb9f564677acb1a126eec8685ec148f19783426bd1414d6deaee6390
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159256
Stripped size: 218
Size: 254
Nonce: 3
Merkle root: 62aaa427ff231790931afa9ddbee08b9231678fcfed9ce888c2cc48a649b2d5f
Median time: 1719159256
Difficulty: 4.656542373906925e-10
Confirmations: 245
Chainwork: 0000000000000000000000000000000000000000000000000000000000000fa0
Bits: 207fffff