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: 276
Hash: 40c8034bab85e0f5e955adbd67fa4fc976d699d8961205633d6e9fd282f29a6f
Previous block: 017b981370170dcb396a0563284748d4621e8dd6f3eea4dced77c0b8d16d25b5
Next block: 07a9f133ec3bd235852c9594e59a97cd0b31495714f49809aa409976e7958b9e
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701597913
Stripped size: 218
Size: 218
Nonce: 0
Merkle root: 67c5da4fa396af1841df607dd3e5a3fa22ff004dad3f8bb84d6b1842e283904b
Median time: 1701597912
Difficulty: 4.656542373906925e-10
Confirmations: 1968
Chainwork: 000000000000000000000000000000000000000000000000000000000000022a
Bits: 207fffff