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: 2622
Hash: 4235b005bc9dca0fa1a71330d08ddc1002af8df167cbae9aaa3e588ba87ef92e
Previous block: 6cecac2debd98c3e7a0b08913ee1d07fbe61760bbb5fd7b84b0b1ea20c8a3382
Next block: 2aa82cb38da16b5d1f415490c44766522185d0f48f5dc8e40c40995b8b988812
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847324
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 263ed65313d8a96d5de6df4cdd3bea045a3b4af82f55eb0720e640bb88b02abc
Median time: 1743847323
Difficulty: 4.656542373906925e-10
Confirmations: 21
Chainwork: 000000000000000000000000000000000000000000000000000000000000147e
Bits: 207fffff