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: 415
Hash: 1d7e2670f90b1e4fe719ec0bf90e5c085d3738e3359ecf86a605e11b2afa4d1f
Previous block: 4a78ec721f0ced272c230ebb708ad99a0f929c35251c125bbf31894d2c9980f4
Next block: 11eed10e6fca9710fea7146a41b7452362b8142b41d85c1cf15269170c7cac86
Weight: 872
Versionhex: 30000003
Version: 805306371
Transactions:
Time: 1701864213
Stripped size: 218
Size: 218
Nonce: 1
Merkle root: c062a7609e81c9a2a8294078e4209bedfd213c59c67b0949bf1afcdb66dd4720
Median time: 1701864212
Difficulty: 4.656542373906925e-10
Confirmations: 1829
Chainwork: 0000000000000000000000000000000000000000000000000000000000000340
Bits: 207fffff