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: 594
Hash: 129ba081056cb69644174d336dafd9ae14b65fa50807edabdff62b5b231ec2b9
Previous block: 5c55a29feacd81754d83fa626ba1515e34368d098105836a1a6370be5b048a63
Next block: 44e7677ecbbc625310aa154965c1c40b0cdc5f145b586d087476de8ec8b615e0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864242
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 75b8dd03a438adbfdc02737cccbedd767930b9c61dd7a9fbbc3f07aaa056c50b
Median time: 1701864242
Difficulty: 4.656542373906925e-10
Confirmations: 1650
Chainwork: 00000000000000000000000000000000000000000000000000000000000004a6
Bits: 207fffff