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: 2406
Hash: 775d07a91cb49e19b2a30033bf0c2f3e4cc88a0025dbe07a27d0f3c714933a2a
Previous block: 6903f57f51c13e973620304f074589727a3498c70e42e5150ff9fb1a6e995901
Next block: 36f35b1f90d63892cdb74b8ffb9b1e97198a460154c6e0d87a9f54f9610f6eab
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847288
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: a39a2d6ac6f7dd4963e12d269658b0d7965e9dd7a7d407b45f9b9468d0112aec
Median time: 1743847287
Difficulty: 4.656542373906925e-10
Confirmations: 237
Chainwork: 00000000000000000000000000000000000000000000000000000000000012ce
Bits: 207fffff