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: 69
Hash: 2c0381f4eb68578d2c994fe687aa1821917d2587a73fde732cfd30adac8389c8
Previous block: 5d9cd39d3d7834629b46820f18e9d9bf1c88c42894feaf9e801a0fdcdecbf941
Next block: 13b7b04e30d67c29bd8170f08090d521f5a1965e1e6203e8fa59456186927c6f
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597879
Stripped size: 217
Size: 217
Nonce: 3
Merkle root: bcb2f2ae22b93e546f339fcf2724b09089c8dc09f0821bcf08c816b2782e72db
Median time: 1701597878
Difficulty: 4.656542373906925e-10
Confirmations: 2175
Chainwork: 000000000000000000000000000000000000000000000000000000000000008c
Bits: 207fffff