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: 1531
Hash: 0d3d520b49907fb96bf08520def7f27f8db78847de662f2af4ace95aee376d76
Previous block: 315a97222571a42e045d261fb5c2aa3f9b72c6557986018a5435a59da862c161
Next block: 79f5512ae8d1ff0e70637a3209edb16cf05cca410132be3896897249b77a8a98
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697663
Stripped size: 218
Size: 254
Nonce: 1
Merkle root: 69a8e68fae0a0f2a675630ea384e88592aa1d633de14f934ca86c9ef660bde95
Median time: 1718697662
Difficulty: 4.656542373906925e-10
Confirmations: 713
Chainwork: 0000000000000000000000000000000000000000000000000000000000000bf8
Bits: 207fffff