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: 301
Hash: 62192cf48cb5bee6059af497f6bf7711b946293f06f2f888b5f1710ebf160a04
Previous block: 0637f183c74623bd7a08a60258934f23e45a16cb5ad6ddde6c37eb3df541f004
Next block: 26db9c694282a46f4a8438ea9d80dfd17b3b0569729561b2fc217c108a38fb63
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597917
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 17e38b2300911454d9842f64be7d9e16cf75ea0ade32c568cf334c5759a778ee
Median time: 1701597917
Difficulty: 4.656542373906925e-10
Confirmations: 1943
Chainwork: 000000000000000000000000000000000000000000000000000000000000025c
Bits: 207fffff