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: 270
Hash: 136baab7ef7dae7c9026499c409ae7d22d04f2aa97078e36d8b0a979d432e4a7
Previous block: 3397637122f096c0e4fd64d68eee8ab9d58c50084403371234c32fcdf0a9fbb2
Next block: 5ab86d2742af678fe80567c70ad7737a066cc7d05516e844574886b8aaee0c11
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597912
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 3e147f62548ae043ab9b97e1f63b60f0f05d47246748be9a825b84b59449e1fd
Median time: 1701597911
Difficulty: 4.656542373906925e-10
Confirmations: 1974
Chainwork: 000000000000000000000000000000000000000000000000000000000000021e
Bits: 207fffff