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: 1535
Hash: 314f8699bec87d70a6106994c6a874b71da6274f922112a05f14483050c68bc8
Previous block: 32ae9fcc5f9e9b57bf178da22c0998ee90e7f41059ea0fc7cd1212c83ede1af1
Next block: 3138625e9c787ac0544685ff7e840ce2bab8f0c9a15cfc029ad3fa325243afc2
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697663
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 9fa2ea0ef5d89471ad0d5fb71b753c3220f594de24b7f18db053cdc7e6e954fd
Median time: 1718697662
Difficulty: 4.656542373906925e-10
Confirmations: 709
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c00
Bits: 207fffff