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: 1557
Hash: 5dc555ef0397905aca7646dafff6ddff82971be86b7fa52bb1587c8a205519d0
Previous block: 04de0cf48b30195b1abe3ed63bcb64bd680f88691949b9ae225360564896bfd7
Next block: 2e8f39c031b058bb94460075432a3ae35da31e4b4e0b4a9ecaa23d0f61a37f0a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697667
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e18c2430f73e8854a6ee8222018e539e13bfd83616f456438bf6b30705fb9d4b
Median time: 1718697666
Difficulty: 4.656542373906925e-10
Confirmations: 687
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c2c
Bits: 207fffff