Skip to main content

Migration starting points

The activation of the EON 1.5 hard-fork marked the start of the migration process.
As usual with EON, the hard-fork has been triggered at a specific consensus epoch, with millisecond precision.

ZEND also activated a hard-fork at a specific height.

Final block hash determination​

The rules below uniquely identify the final block hash of both chains: this marks the block at which the balances have been migrated, and any transaction recorded after this will have no value.

  • For ZEND Mainchain, the blockhash at the hardfork height has been marked as the final block hash.

  • For EON, the block including the reference to the above mainchain block has been considered the final block.

Before starting the migration process, both of them have been confirmed by more than 100 following blocks on mainchain, making infeasebale a block revert before the migration point.

Here are the final confirmed hashes:

ZEND Mainchain final block hash:000000000059963d5021a9c29167878916e476a249ca988dd828bac4a8a3351a
ZEND Mainchain final block height:1807300
EON final block hash:d3e837c2939917f8a676f9a4b626c1024718636740732db05fc6de811a8e32aa
EON final block height:3573401

Useful commands to get the block hashes​

For ZEND:

To obtain the hash of the block at a specific height:

zen-cli getblockhash <height>

In case of testnet, the command is:

zen-cli -testnet getblockhash <height>

For EON:

To obtain the block that references a specific ZEND block by height:

curl -sX POST 'http://127.0.0.1:9085/mainchain/blockReferenceInfoBy' -H 'Content-Type: application/json' -H 'accept: application/json' -d '{"height":1654690, "format": true}'

The result will be in this format:

  • The field mainchainHeaderSidechainBlockId is the EON block hash referencing the mainchain block.
  • The field hash is the ZEND hash (double check it is equals to the ZEND getblockhash result)

{
"result" : {
    "blockReferenceInfo" : {
    "mainchainHeaderSidechainBlockId" : "ae4cea03e6920679775e57236f27dc541ad900d9741bb2b71a46074748ff3062",
    "mainchainReferenceDataSidechainBlockId" : "ae4cea03e6920679775e57236f27dc541ad900d9741bb2b71a46074748ff3062",
    "hash" : "000218ca034fc86b54b2417a376656c90a5ee7e5412d015a588758f8dd521d3c",
    "parentHash" : "0003199e4fe1db486924ceaa8325a2a3884a894276632aa7a36dbf5b8e46332e",
    "height" : 1654690
    }
}