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: 300
Hash: 0637f183c74623bd7a08a60258934f23e45a16cb5ad6ddde6c37eb3df541f004
Previous block: 3f67ef25bbc30170741f090d530b39a9a84e7224615008de4f41e57705e6a225
Next block: 62192cf48cb5bee6059af497f6bf7711b946293f06f2f888b5f1710ebf160a04
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597917
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: 40106bb93052ca397a1c85400d0f72147d2019f059ea098f7429836dd0ff1035
Median time: 1701597916
Difficulty: 4.656542373906925e-10
Confirmations: 1944
Chainwork: 000000000000000000000000000000000000000000000000000000000000025a
Bits: 207fffff