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: 2623
Hash: 2aa82cb38da16b5d1f415490c44766522185d0f48f5dc8e40c40995b8b988812
Previous block: 4235b005bc9dca0fa1a71330d08ddc1002af8df167cbae9aaa3e588ba87ef92e
Next block: 1a10e24702f2b6c97f7e9d503e5c5d8630fe3af645b25123b81a8c5756758f65
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847324
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 298924e78bb7ae956e024a562742552530097233369d5e11b2b2f4f7cb0cdbd2
Median time: 1743847323
Difficulty: 4.656542373906925e-10
Confirmations: 20
Chainwork: 0000000000000000000000000000000000000000000000000000000000001480
Bits: 207fffff