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: 1453
Hash: 397903abc1a599fa302c304878e1a5b613419fd669d7e124a2ff74a21861b0a4
Previous block: 37fc59206fe030c25637971e2345cdaa4eec51c0a207a4108bde57161dd7df16
Next block: 6641b37211c3f50279cedec09190ae8e4f67a6da688669dfee424727be20cdf6
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697650
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 8d16ed2e165b23652305be8a5a40ef5103b9d8810237278b64ac2ef28c890129
Median time: 1718697649
Difficulty: 4.656542373906925e-10
Confirmations: 791
Chainwork: 0000000000000000000000000000000000000000000000000000000000000b5c
Bits: 207fffff