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.

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Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1240
Hash: 52988d66ccee40d0f3cc7660e493746ced0bc2e7d47a54346788093e1fb6b0f7
Previous block: 649495a7f146a1f11289acc68d7dc78407d155d38f40ffc2bbba8742c139d451
Next block: 3a8676fb371a14466dae1e280b2a91ac9893fecbdaf3fb6c40128251aeb42348
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697614
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 2c64062ada844e6ab0159fe2ca469968ac267adc89aef269caedc5eea3f5bc2a
Median time: 1718697613
Difficulty: 4.656542373906925e-10
Confirmations: 1004
Chainwork: 00000000000000000000000000000000000000000000000000000000000009b2
Bits: 207fffff