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: 405
Hash: 3dcf31a8b33c0c448dc326ab8d5b6ff138d4a2654bf07616655403393ae67126
Previous block: 47189ba846aada60db10269bcb5840d0995838bc89a7a77b5e2cbb8ae1bf7767
Next block: 7e7275c79dcad370868e9eb1a3f1bfb41b00403799ebb1c0cf64e884357aa0ac
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864211
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: ad03e406e80fc3ab0cd5e4f159b631564ebc4aaf1b79073283ae0a7d0fe2ddc5
Median time: 1701597934
Difficulty: 4.656542373906925e-10
Confirmations: 1839
Chainwork: 000000000000000000000000000000000000000000000000000000000000032c
Bits: 207fffff