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: 478
Hash: 0c43ef2906f6f91ea0bfd9e70d5c4522eb6975368713862db338099ecbcc073c
Previous block: 1128a1154c3794b587df403d86c3e413a1a403fdde00df63976d55e99c542619
Next block: 196ee2356240873f55c048fb8efd4aabc142d6840a1d52dd833773d9a8e4e46c
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864223
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 075dc6db25953053c5f6dccbd9b58dd18745468103d84dcba82de42ebab9b283
Median time: 1701864222
Difficulty: 4.656542373906925e-10
Confirmations: 1766
Chainwork: 00000000000000000000000000000000000000000000000000000000000003be
Bits: 207fffff