Topic: | ARDOR | Scalable Blockchain-as-a-Service Platform | Proof of Stake - page 81. (Read 395841 times)

So in my wallet I would see the transaction confirmed only when it is added to a bundle and confirmed in the main Ardor chain?

In this case, what is the purpose of this mechanism with bundles, why not just confirm each transaction from each child chain in the main Ardor chain directly?

The forging chain supports a very limited set of allowed transaction types, such as transfer of Ardor from one account to another, trading of Ardor to each of the child chain tokens and back, leasing Ardor balances to other accounts for the purpose of forging, and a special type of "ChildChainBlock" transactions. The forging power of each account depends on its Ardor balance, in exactly the same way it depends on the NXT balance in the Nxt platform, the consensus model remaining unchanged. All transactions that change Ardor balances are recorded on the forging chain, and therefore downloading and re-processing the transactions from the forging chain provides exactly the same proof-of-stake security as the current Nxt platform. But all transactions that modify child chain token balances only, or any other account holdings (such as assets or currencies), are not recorded on the forging chain, but only on their corresponding child chains. Thus, removal ("pruning") of those child chain transactions after they are no longer needed, does not affect the blockchain security, as validity of Ardor account balances can always be verified in a trustless manner by each node.

Of course, the validity of child-chain transactions and account balances (in native tokens) must also be ensured by the platform, and this is done by anchoring them to the forging chain by means of the above ChildChainBlock transactions. This special transaction type contains as an attachment a list of one or more transactions belonging to a single child chain, i.e. denominated in that child chain native token, with their execution affecting only account balances and holdings on that chain. In effect, such an attachment represents a "block" on the child chain, although no actual forging (block generation) is done on child chains. But those attachments are linked to the ChildChainBlock transaction by means of a cryptographic hash only, thus allowing the transaction signature verification to be performed even after the actual content of the attachment has been pruned after some time. This is building upon design and technology already implemented and in production use on the current Nxt platform - in the form of prunable messages, and prunable data ("data cloud"), and a network of special purpose archival nodes to store them.

Block generation (PoS forging) happens in the main Ardor chain only, according to ARDR stakes, so child chain token balances are not affecting chain security.

Does anybody know if a bundler in a child chain has 60-70-80% or whatever high percentage in his own chain, can he successfully conduct a 51% attack?

Ardor Release Timeline:

    Oct 28 - Nov 04
        5th and last ICO round, 100 M JLRDA plus all unsold JLRDA from the 4th round and minus marketing expenses are put for sale at 1.45 NXT each as announced
        Any remaining unsold JLRDA tokens will be kept by Jelurida until the Ardor snapshot and the resulting IGNIS tokens will be used to fund future development and promotion
    Nov 04
        Ardor testnet 2.0.4e release
        Starting from a new genesis block and deleting the current testnet
        Adding major new features: Asset Control and Composite Phasing
    Nov 24
        Final Ardor testnet release
        Source code is released for review under temporary license, no cloning allowed
        Node JS module and Mobile App operational
        Only security and critical bug fixes after this date
        No further API changes
        Four years anniversary for Nxt celebration
    NXT Block Height 1630000 - Approximately Dec 25
        Ardor genesis snapshot recorded at block 1630000
        Transactions with ARDR, Bitswift, and Janus assets disabled on the Nxt blockchain
    Dec 27
        Ardor generally available software release
        Source code released under the JPL
        Forging not yet possible to give time for users to setup nodes, and perform final verification of snapshot balances
    Jan 01, 2018, 00:00:00
        Ardor genesis block timestamp reached
        Forging starts automatically
        Ardor blockchain becomes fully operational
    2018
        Continue development according to roadmap

Nxt roadmap

    Dec 24-25
        Hardfork, freeze trading of ARDR asset and other assets included in the Ardor Genesis Snapshot
    Q1 2018
        Develop Nxt as a simple and secure crowd funding solution for new ICOs
        Position the Nxt Blockchain Creator Kit as a viable solution for new blockchain projects
        Add permission layer and peer communication encryption for private blockchain solutions
    Q2 2018
        Merge features added to Ardor which do not rely on the parent/child chain architecture

https://www.jelurida.com/ardor-release-timeline

I can't understand one thing: Final release of ardor platform (snapshot or whatever), will it be on 24 Nov or 24-25 Dec?

I can't understand one thing: Final release of ardor platform (snapshot or whatever), will it be on 24 Nov or 24-25 Dec?

Wow, oh, that's who is the whale, I thought it was Jelurida...

Good day for Ardor
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https://www.cbtnuggets.com want to buy 50kk ARDR for their project (more than 30kk already bought).
https://twitter.com/AvdiuSazan/status/919098831370964992