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: 1435
Hash: 0236c942c11843654fedf9255c95535959f47df8e544b4b5e9f6522417952b5d
Previous block: 4660dc3e38c60b7ef11171e52a5aac6b4edf7a9244a3f23713b97082dc259619
Next block: 2ffa9a962156f5743d3ec808d5093d831f94634c56f421926a602e57e8b93456
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697647
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: d662120ffdbfccd2035e1546d6d5ad715dbfc9d47536c129762a2772653b80d1
Median time: 1718697646
Difficulty: 4.656542373906925e-10
Confirmations: 809
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b38
Bits: 207fffff