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: 1398
Hash: 22b52e00cdee39ede2552b138efde549700460cf9782824bcb6ac6be86fbc5ae
Previous block: 57cdbd66d250f933765967e702b0558e0b1b86efaa921f9c9081276818a536fd
Next block: 0a3eafd7b283002c3bd2c9d386a3d3834d87fcbca85bb1e5c1514bf547b1a85f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697640
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: ea149c9f98dfd800b26df9f260e1a30994c47a1dc91bf97881ef1761ed039b75
Median time: 1718697640
Difficulty: 4.656542373906925e-10
Confirmations: 846
Chainwork: 0000000000000000000000000000000000000000000000000000000000000aee
Bits: 207fffff