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: 1555
Hash: 2b2192f7a012aa9a7b031577d41d894d566766dfd31b18b71be0300ad0f27ec5
Previous block: 743131ed509f3525ced5f0bb2030beb66fb7b0152f72846c8a40f1d86de48d97
Next block: 04de0cf48b30195b1abe3ed63bcb64bd680f88691949b9ae225360564896bfd7
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697667
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 7e7e9458c8e7daade33aedc3c8423fc7a5a13a5f6c4635020496c9cea8e69008
Median time: 1718697666
Difficulty: 4.656542373906925e-10
Confirmations: 689
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c28
Bits: 207fffff