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: 2090
Hash: 4c3c8e385f04175dc74561d0c9993af05ed37faf84990103101b5be5e7b1bc7b
Previous block: 5a8c909fbce1ed06abe57ebe4f4e7e5088190d872a68867c074ab21fa5b723fa
Next block: 04514c64e8732fb44369ac7c252f79775d0437eb4c62df6bb8796c298affa078
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1728964785
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9e24230638f52b105415436203543fec2e77e07e0412d815b036c5d711a4cc45
Median time: 1728964784
Difficulty: 4.656542373906925e-10
Confirmations: 154
Chainwork: 0000000000000000000000000000000000000000000000000000000000001056
Bits: 207fffff