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: 490
Hash: 15e80a9c9b33f3c383f8572ddddc2a603d2b4fc5aecb9b6fcb5a70498a767ade
Previous block: 1ebfbb1966085f6130f0005bce1f63490b2a1982dc74e58900f2300f35c650fb
Next block: 6ff181d9451d3d93a776062678cea88328e2f63b71f00751ac34cde62e10e8af
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864225
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 14c03b4346f49f3c50c24c0cdf3514a18cc65ce0e465a9e4f533fe0f86033603
Median time: 1701864224
Difficulty: 4.656542373906925e-10
Confirmations: 1754
Chainwork: 00000000000000000000000000000000000000000000000000000000000003d6
Bits: 207fffff