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: 81
Hash: 3f878b175e8c2a3d7b81f28c98e11eb341e8363204f6f83e22dc00f102a15943
Previous block: 42a5e29b507a8ae90840a75d406f1d086d45efe611756f52d1576439085a11ed
Next block: 034f8cf0a99375423499b2213843fd59abd04bc7983b27172f679d4852c6cfc0
Weight: 868
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701597881
Stripped size: 217
Size: 217
Nonce: 1
Merkle root: 7fe3f7ab681ce4c8f4873a86b800b63d5df359fd66699f1289af78d3d01a6fda
Median time: 1701597880
Difficulty: 4.656542373906925e-10
Confirmations: 2163
Chainwork: 00000000000000000000000000000000000000000000000000000000000000a4
Bits: 207fffff