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: 2573
Hash: 18cfd0d91c5787694fe07618ff8c4e2d35c1cbf503f40bb8820c3790f2159d53
Previous block: 09bd873add37b42e60bd3be0d98b954b3ef99ccbb83bfd0fb9ab5519fc208cc1
Next block: 7dd120ec780a9242e55b1e552732933dbddcab0df454c398773428798d0ccf77
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1743847315
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 388c5f04094c31cde2b2e8e7a262839dbb9acf73d7f78efd6c2c372f32e402dc
Median time: 1743847315
Difficulty: 4.656542373906925e-10
Confirmations: 70
Chainwork: 000000000000000000000000000000000000000000000000000000000000141c
Bits: 207fffff