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: 1506
Hash: 5aa1c12b62e5e39fa104c7b314aae115c35cd53e7781f32b455b64e99a568402
Previous block: 7fc300708f046626fcf189f1e0c7e0bb97e5480d358f0b6d3d1b76251ac4a115
Next block: 3ed41613fd703b9a56a5e84b503d9d59498da26d0219d6bd29c51f87dc72972e
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697658
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 4dff301c5bee369b46b733ccae00c2a0f624cbbaaa99d8387c6679a2fe751800
Median time: 1718697658
Difficulty: 4.656542373906925e-10
Confirmations: 738
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bc6
Bits: 207fffff