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: 1546
Hash: 2965c1461885f99eb46dde8946e57dbdc042a609b388a4e5c3268efd43127808
Previous block: 033aae1c835a70cc8300546731d8e7397f60882d0b8745f19989a8298b45a24b
Next block: 72d086848ec934b1ae8c1c973aa6285dc23987e50fb0b54c87b0cabf3d41ca77
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697665
Stripped size: 218
Size: 254
Nonce: 7
Merkle root: e7bd1f44956771f0892b66b7008a24664891611688fae0d44c079553186085c0
Median time: 1718697664
Difficulty: 4.656542373906925e-10
Confirmations: 698
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c16
Bits: 207fffff