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: 1500
Hash: 5077c26aacf358fd1e1b3fd745def50234da269e00f7e5880ac725cf6d8d4ea4
Previous block: 1909d5430ada4f4afdc463943b1c8b1cdbd8a9dde56020aa6ef58688c1bcb0a7
Next block: 348f84d87fa26332acd1aad1b9aad386ad1ad4567381dc75423b8586443ed730
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697657
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 17f6233a70178753df71c0ec2ae2296ea40764a3678b76322e564621e0e28cc7
Median time: 1718697657
Difficulty: 4.656542373906925e-10
Confirmations: 744
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bba
Bits: 207fffff