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: 242
Hash: 6df6015e991d6ab2a56445a3782639f1c2d32f882d0baf6cb5f4da564826c736
Previous block: 3023c5bff625b0e2f0c9bcf90258da845bcf1b09f40bd8f73b150482299e7de9
Next block: 6f2cbe3694635852fa21cd901e3c6ce2e66659b4270726cb1b01442d1c8608eb
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597908
Stripped size: 218
Size: 218
Nonce: 3
Merkle root: 4ca4fcae802264c446df75d1632db2e46131deb51d613512c700e4ca60cf648c
Median time: 1701597907
Difficulty: 4.656542373906925e-10
Confirmations: 2002
Chainwork: 00000000000000000000000000000000000000000000000000000000000001e6
Bits: 207fffff