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: 633
Hash: 63ed97395d2b5a4922e8763435f4f8b187238f4bb92b8d63e1a36051b4d1c03f
Previous block: 64b7bad47c93657587950411a33dd3eb06b899498de77679a2c686670a5c9e43
Next block: 5e5bee6fe5ca679a1188a5c4755f6882ff836ea85ee6604d6834d7422a5cc528
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1701864249
Stripped size: 218
Size: 254
Nonce: 4
Merkle root: 973386c77a4d99dd6a5fa9aff442b74ffe7a65efb0aaa79a6d80b2057966e235
Median time: 1701864248
Difficulty: 4.656542373906925e-10
Confirmations: 1611
Chainwork: 00000000000000000000000000000000000000000000000000000000000004f4
Bits: 207fffff