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: 824
Hash: 4f29591d2dc14c987797f427a208c0805819667a59a07587555f338e20962f01
Previous block: 1bc27956e5bd871eae44f1816f54a59d6882dc466c107332fb69ed3382021f16
Next block: 0f37688ef38880d857d7e6760693c57b3fb70e314882d7608ce5dcc6ac8cce7e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1707857806
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a4fe2f323f0263333c6feefa8cb71d4e9452154b53a0bb461dd9db566750d7c1
Median time: 1707857805
Difficulty: 4.656542373906925e-10
Confirmations: 1420
Chainwork: 0000000000000000000000000000000000000000000000000000000000000672
Bits: 207fffff