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: 646
Hash: 45266965248c0bfcbe988f83b7e32f5da34dd39e4bd17d0c7b5fbd5ca7d19eab
Previous block: 7461b9d540343a555327ea82fa58fbb84e789f00e5f1c5a74b323ad6696ef91d
Next block: 24984844a6accd7e222df801cc78159c815828bd1015ec75d86cd1df6a1a5651
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864251
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0d9a3e49d0819db5a0613794f1f5c99d46624d6d2cf5ef2e685e44bb04920456
Median time: 1701864250
Difficulty: 4.656542373906925e-10
Confirmations: 1598
Chainwork: 000000000000000000000000000000000000000000000000000000000000050e
Bits: 207fffff