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: 1301
Hash: 64960f4c4ce21b4769e2cb388ce0694c7a886781cf2a99f9a2a45c3cef397519
Previous block: 44bb320504081cb8fc6bcbdeed226fe64dcfd8065d1743ac9290c2eaa40f2fb3
Next block: 1bcecb833c640b4d6d14bbe1cf8ac44d8b096a8567174d1b1158fd056af61827
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697624
Stripped size: 218
Size: 254
Nonce: 6
Merkle root: 12fae0160dd3cfa9afeb6f797e453a13485d9b4024a1c6912b7e525c2cb70ae4
Median time: 1718697623
Difficulty: 4.656542373906925e-10
Confirmations: 943
Chainwork: 0000000000000000000000000000000000000000000000000000000000000a2c
Bits: 207fffff