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: 2490
Hash: 54793d07df080a6700dc015d8098cf31c6de329e2152bd91fcd1359baa9c0932
Previous block: 73f948f7392900d93c797e3ec1fd514a8b224bcf59d26adfe9f6ee9653864fd5
Next block: 414c36cf41cb3ba4056fb47574231282ab307fc18ae2cf73902ad911d5fa805f
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847302
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: e691d9579dedbff73e0292d2d2dd8ba26638ed63172ffb40c488bd3d542f04a5
Median time: 1743847301
Difficulty: 4.656542373906925e-10
Confirmations: 153
Chainwork: 0000000000000000000000000000000000000000000000000000000000001376
Bits: 207fffff