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: 1515
Hash: 6d9c1dc33a4fdc84b3e40542857efc37d4a5ee1277a07aada62e2fd02e07d1cf
Previous block: 06377da1213de07ce465254175d1f79b975785a70da5c9b1708f4bc973f4d4b0
Next block: 2cc4dfef683a94223364932b64ec1686f9434068e1b53cdcf4bde8ed22b6b811
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697660
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 6353ac1a97475f80e9d3efbd63d63923c1a1e74c41f0eec59c0bf09901da1a48
Median time: 1718697659
Difficulty: 4.656542373906925e-10
Confirmations: 729
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bd8
Bits: 207fffff