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: 630
Hash: 1830e62c7cc3eea5585077bed28d8b7494963df1a36aafd1597bdbf5757a0b1b
Previous block: 49f0cd3f75af296ebbc753a0b4246d0657ec576ed56fef830b4413d98d0bc82b
Next block: 7f6400cf71c3bfe00cc3c13ed90af8daf7130e61685a64a58c90092faf434184
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864248
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 83e779b2726267632b69a3638a65e8e206c0aaa76865d7fc85e4a7e8d2ca4425
Median time: 1701864248
Difficulty: 4.656542373906925e-10
Confirmations: 1614
Chainwork: 00000000000000000000000000000000000000000000000000000000000004ee
Bits: 207fffff