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: 243
Hash: 6f2cbe3694635852fa21cd901e3c6ce2e66659b4270726cb1b01442d1c8608eb
Previous block: 6df6015e991d6ab2a56445a3782639f1c2d32f882d0baf6cb5f4da564826c736
Next block: 3998cd9a4e04d6cb2907e050fcd52091fa5149498549c5653acc7b8e8721afe0
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597908
Stripped size: 218
Size: 218
Nonce: 5
Merkle root: 5509cfad04c88b0de2fee79a4a9d707fdd834b98a14917ff975f74f885cf8b2b
Median time: 1701597907
Difficulty: 4.656542373906925e-10
Confirmations: 2001
Chainwork: 00000000000000000000000000000000000000000000000000000000000001e8
Bits: 207fffff