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: 669
Hash: 40585abd4246161a56e846eabd5e1a1aa3b514845ed8611aa586c5fa7142df4f
Previous block: 593b176f3adaf08f4cf1d5cff21122006939a1aedabb8796c81c09ade44ab2eb
Next block: 270e99ec5703e89a58352e258e36dfd41f3dd2fb52d7f960884b6c9d50fc9add
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864255
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 5e34791d148b4dfcb58dc2be252ac490cf9c17e6574851047bb80f8649fb8ff7
Median time: 1701864254
Difficulty: 4.656542373906925e-10
Confirmations: 1575
Chainwork: 000000000000000000000000000000000000000000000000000000000000053c
Bits: 207fffff