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: 730
Hash: 3dc72ae46904734d4e66999fe60a7b350f4009e5ed991c17820f72e940b62d1c
Previous block: 186beb815e7d1024176e7cc176ef2c500b6b937d0fee5ef4978aee3b9f4ca7c6
Next block: 2f375d57eb581b1a2417598c9e152fcb5b92349678858328e39bdd4d589e58ce
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864265
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4487c5e28e3bbd0686b027f7d3cd27661811729285dac566e4cf82604507ed4e
Median time: 1701864264
Difficulty: 4.656542373906925e-10
Confirmations: 1514
Chainwork: 00000000000000000000000000000000000000000000000000000000000005b6
Bits: 207fffff