source :
https://support.tdax.com/announcement-%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%81%E0%B8%B2%E0%B8%A8/pooled-znodes-are-now-available-on-tdax-%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%A5%E0%B8%B0%E0%B9%80%E0%B8%AD%E0%B8%B5%E0%B8%A2%E0%B8%94%E0%B9%80%E0%B8%A3%E0%B8%B7%E0%B8%AD%E0%B8%87-znodesPooled Znodes are now available on TDAX
Pooled Znodes are available on 01-January-2018 at 9.19am! TDAX is pleased to offer Zcoin (XZC) rewards for all customer’s with Zcoin balances held on TDAX.com
Rewards will be distributed every 14 days. No ID verification is required for participating. Withdrawing XZC from TDAX during that time will reset your holding period and possibly reduce your rewards.
The amount of Zcoin deposits running Znodes can be audited. We will provide the public address for it within the next days. Rewards will be distributed to all customers holding Zcoin in their TDAX account.
Distribution details
TDAX will run Znodes on behalf of TDAX customers and will share the rewards accordingly.
70% of the Znode rewards will be distributed to TDAX customers with Zcoin balance in their account, the remaining 30% will be used by TDAX to cover the costs of running the nodes (security, server, network, backup, etc.).
Rewards will be proportional to the deposit size and time Zcoin was held in TDAX customer’s account. They will be distributed automatically every 14 days. We give time of holding a slightly higher weighting than the amount of XZC deposited.
How is the reward calculated?
Here is an example of how the reward is calculated.*
Balance in TDAX at the end of 14 day cycle multiplied by days from the first deposit (times three for additional weighting). If you withdraw all XZC from TDAX, it will reset the holding time.
If the total Znode reward for a two-week period on 14-January-21 is 100 XZC and there are only three users, the distribution reward would be calculated according to shares and distributed as per the following:
1,000 XZC deposited on 1-January-2018 by User A with no movement, holding time is 14 days and balance on the end period is 1,000 => 1,000 * (14 * 3) = 42,000 shares
1,400 XZC deposited on 7-January-2018` by User B and then sell 500 XZC on TDAX on 7 Jan, holding time is 7 days and balance on the end period is 900 => 900 * (7 * 3) = 18,900 shares
1,600 XZC deposited on 1-January-2018 by User C then withdraw 1,600 to other wallet on 6-January-2018 and deposit 1,000 XZC back to TDAX on 7-January-2017, holding time counts as 7 days and balance on the end period is 1,000 => 1,000 * (7 * 3) = 21,000 shares
Total shares will be 42,000 + 18,900 + 21,000 = 81,900 and the total Znode reward for a two-week period is 100 XZC.
A will receive reward (100*70%) * 42,000/81,900 = 35.8974358974 XZC
B will receive reward (100*70%) * 18,900/81,900 = 16.1538461538 XZC
C will receive reward (100*70%) * 21,000/81,900 = 17.9487179487 XZC
TDAX will automatically distribute rewards every two weeks. If you have not received a reward at that time, you most likely did not hold Zcoin long enough. The holding time resets every 14 days and withdrawing resets it to zero. We cannot not adjust deposits retroactively and the system will calculate and distribute fully automated.
*Final calculation is still dependent on TDAX.com
What do you think about this feature ? Excepting the level of trust in this exchange itself, is this kind of service a good way to hold my coins and earn a small revenue for holding ? I precise that i currently hold my coins (small amount) in Bittrex and not have any revenue, and don't want to setup a masternode or even setup a wallet in my computer. But i'm ready to hold my coins for a long time.