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: 487
Hash: 739a1d7af8f897c6c3517c87440b54e51efc28f156a251ebc2d827cb9a841426
Previous block: 2303254e0ec5c02b0f45f133cd7e772d4110ef42b176e2eb734ba7172bbe6bc2
Next block: 1a2a8ac1c50519f37f183101eb8891720d4e2e1a71e26b579db24bf4aae95570
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864225
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: cd0c3a8929cecdeea713e83aadb0a3180e561e8ea412d99ad62c3d1b7511228c
Median time: 1701864224
Difficulty: 4.656542373906925e-10
Confirmations: 1757
Chainwork: 00000000000000000000000000000000000000000000000000000000000003d0
Bits: 207fffff