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. mupBAc74k

Height: 1556
Hash: 06ed7d68e97fce7b4e5924fb339b9d4f60e221247c89382300e001639d0ff2e2
Previous block: 07471e41b7cb21524f81b0f0609a3939950bbc427452bae9743334192177bb3f
Next block: 5d287edde5169fa3e9e40abb47e8b168b48aef3128b8c60dceb27ad7b8f1b871
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1708932129
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9e79e85942520c8d7150abafb9e0a5ad53daf5cebf7b3d0b4402199ac29cfd08
Median time: 1708932128
Difficulty: 4.656542373906925e-10
Confirmations: 53
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c2a
Bits: 207fffff