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: 1396
Hash: 764c31664af28ed525f42643211941c7a666e5079b13ed4fc5ef60d1133f88ee
Previous block: 2e04f6c3c7f965c9eff4303f926a47ddef4f489c6333005308c0aef8a0eab9b9
Next block: 57cdbd66d250f933765967e702b0558e0b1b86efaa921f9c9081276818a536fd
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697640
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 945f6cb1f82442c9c0f7d68b7c0fce8af2bb82ab8441ecfa1135e5c06d04707b
Median time: 1718697639
Difficulty: 4.656542373906925e-10
Confirmations: 848
Chainwork: 0000000000000000000000000000000000000000000000000000000000000aea
Bits: 207fffff