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: 599
Hash: 7dbe0f9e42ca5abb3f75558119452876f24dbfe61b59e21640c183299f60a095
Previous block: 7079cc729cc22fadac138dbef9581e69836044ebdcce3f15ba4ea384d0ae89b0
Next block: 478ef192d56e018f4e0939dffeb3f7d63a23b48ef0661f6401130cb55f9c544a
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864243
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 97b0bc63bcf8be087910359b98294999a9a456edb4b0f7f887d69065bb789a1e
Median time: 1701864242
Difficulty: 4.656542373906925e-10
Confirmations: 1645
Chainwork: 00000000000000000000000000000000000000000000000000000000000004b0
Bits: 207fffff