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: 1984
Hash: 31adb04136be8d7e2288f54bcc02cb08e6f30d2cd42ff0838d6ccb4ab40a7a51
Previous block: 5ee0b03d985e6328610ff708aba5644bcbc3c29aedafbbc51fbb309ffa3a2025
Next block: 6d2e25b852e4fb3de507198c47e790178c5404b5f0eaf7f3850370e3c7c9917a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1719159254
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 51374af1ba2031aca45fba218d211e0460c966d5258efcb3c8376b7056561aca
Median time: 1719159253
Difficulty: 4.656542373906925e-10
Confirmations: 260
Chainwork: 0000000000000000000000000000000000000000000000000000000000000f82
Bits: 207fffff