This question shall be answered by the analysis of some data from the application coin-doubler.

How does coin-doubler work

This application generates profits in the cryptoscene by using the most advanced technology and everybody can benefit from it by "donations". Donations to coin-doubler are rewarded with twice the amount in the same token over an unspecified period of time, also as a gift.

Evaluation of a randomly selected donation

The user foxy-role has donated 4,200.000 STEEM to coin-doubler with this transaction 9d25f86d2509d1ae81eca1bd8d674d13f35d8f7e on 09/11/2023 UTC.

List of the gifts

The table below lists the corresponding gifts which the user foxy-role has received from coin-doubler.

#	Date	Gift	TX
1	09/12/2023	164.821 STEEM	cc226ee8500eaed51128686630be30f6ea4b4529
2	09/13/2023	129.155 STEEM	8078e49d3ea8dd08bd55419d7909e9030aca891c
3	09/14/2023	145.203 STEEM	172fb1761bfdaccc33513b4826f3e5efcf414616
4	09/15/2023	138.686 STEEM	d9ca55cf06a5d1faa27540b8ae65a1acfbbdca5f
5	09/16/2023	158.540 STEEM	caa858d73e417e9f27ce0fb8c3acbadf318a34f8
6	09/17/2023	126.310 STEEM	e14a6de45f8c7c30a8f672eabf6689b276152a66
7	09/18/2023	156.201 STEEM	2660dcb0e54f107fd3e8655aa639e57ce7a8db08
8	09/19/2023	131.915 STEEM	7d7e3bbe7caf554843e236fab925cfc6e5c73a29
9	09/20/2023	150.200 STEEM	faff7dc3bae771466d02723a4f3a6acd2b467e95
10	09/21/2023	167.469 STEEM	337815757d9c377bb12e1de610b10a8c7d65a957
11	09/22/2023	146.549 STEEM	9d6c2224cf14b47266f4f921bb1d79a392b3967f
12	09/23/2023	130.247 STEEM	fdc5b2a0098124ea6fd155b241376d8a4eae60dc
13	09/24/2023	164.108 STEEM	4eab5b2b50427c7d9de7f46679dad96e88cbfddd
14	09/25/2023	139.391 STEEM	e7d1f82b4276a98131c3cab558917a907122c231
15	09/26/2023	145.344 STEEM	0412f35c08a4d97b9c1581995102a3c2b695044b
16	09/27/2023	140.528 STEEM	784cd4d3d195d9f1552bb36ebd3768cd8d4959ac
17	09/28/2023	165.438 STEEM	4c3d70a419dba467234517c7a92a02ad35694d3d
18	09/29/2023	136.858 STEEM	2ab0f008739aeb77bd25ae1a7ec2182f722ec617
19	09/30/2023	146.899 STEEM	e0e076223a45c67fb04b0bc8ce3478e068d9f441
20	10/01/2023	159.653 STEEM	9256f1be51adf6bef80126ea74cb11c2d19c1646
21	10/02/2023	161.521 STEEM	8c6f3a36ab94e54592258b11a992d4ea4e6f1165
22	10/03/2023	133.068 STEEM	f173fd37e0a02f8599608964d1b26719bfcd6fef
23	10/04/2023	161.808 STEEM	2e7dec22c6e4aedabec24793d411f7deb22d09e5
24	10/05/2023	157.731 STEEM	0750d0044e7c2893d36f32b5249aedb3567831bd
25	10/06/2023	164.040 STEEM	c410ef377e6c5e0d427ebed18e699f7bdf27f1af
26	10/07/2023	137.060 STEEM	15fcc5c8c3b772018fb109e4af3f6164fee626ea
27	10/08/2023	137.544 STEEM	fad38de108f623128d818bb401b5efb7f237833b
28	10/09/2023	151.167 STEEM	3ea26cfc09a00149f623c3f5954f053fdfb2eea9
29	10/10/2023	141.352 STEEM	de296a3d37d681ed8410459786c4cdd3b3118748
30	10/11/2023	158.020 STEEM	58da1a2817d5827f14e2da335edbc73fc5749f24
31	10/12/2023	147.650 STEEM	d641fa7134c5216fa3ea0c98b2a1c772f32d53d9
32	10/13/2023	166.757 STEEM	10e4316476c90629f728164865e83a716c7d74ef
33	10/14/2023	139.027 STEEM	21367533530959f7a8701062ef5c87374346444c
34	10/15/2023	144.968 STEEM	e1ba3bde0d53f62275ac4a7a84d949ffa9a50026
35	10/16/2023	164.972 STEEM	f21a340efd24e7933e61313dd17cac3ce26dd604
36	10/17/2023	149.473 STEEM	7515f6ba68f06481a08fc4f42acd1048170e1e1c
37	10/18/2023	162.309 STEEM	9406e5d7b5d5a566044c70cf3e001d014ff456e8
38	10/19/2023	166.852 STEEM	77f55614d32dd8a83543fec25be3f286a9ef7ad6
39	10/20/2023	166.904 STEEM	722d8a8eec41e27ec1886082c1cc33e065f7682f
40	10/21/2023	131.571 STEEM	82b8d5cc66f92cea66f1554d8d5c6dc1ef1828b9
41	10/22/2023	160.657 STEEM	7e3950dda5c7b46a7cfdafaf57b7a6409a6faa88
42	10/23/2023	129.481 STEEM	7f466bbbe30666cad898d08cb744d910545cd356
43	10/24/2023	154.785 STEEM	3b33abc95215d511483db7f7694692585e37f516
44	10/25/2023	133.735 STEEM	898152fcbba1dd8b5e93ce810bf591b81d369bd0
45	10/26/2023	137.752 STEEM	5b27f197ec91930253342c82abe65ca26d3b6cdc
46	10/27/2023	165.728 STEEM	0e977bd3dde03d28ce798ac4ac783be63266a2c4
47	10/28/2023	131.300 STEEM	92779daf5cd5ed5796b625341d23db7ac28f8468
48	10/29/2023	139.530 STEEM	b787f40be95b97f7a4ba28927d239d6d5106cf60
49	10/30/2023	144.881 STEEM	081d740f47b5c7f16a77e7ef0b83a08b534634b4
50	10/31/2023	140.806 STEEM	68615a422d7f19454f148d546ec1230ac539d94b
51	11/01/2023	131.590 STEEM	ca48a79fa7d624177194c12121e5a12f78b1e94f
52	11/02/2023	131.203 STEEM	9994302d78be499677cbbd87bb60f6c2c44f19cf
53	11/03/2023	131.891 STEEM	17d85388fb31735e07e3f8cdecf8c74aa9c84e84
54	11/04/2023	138.703 STEEM	89ba7fbe7712aa0c8f2c6ef3e9f181355c6e2204
55	11/05/2023	144.739 STEEM	d1f2677c1bd7f16193ac92ac7ac53ed468ce5aa2
56	11/06/2023	128.188 STEEM	df26bd3ed3f67465ed7f9d984f94f236be63b61b
57	11/07/2023	150.046 STEEM	899d566918a3adaee9d61cc645dda3481add605b
58	11/08/2023	17.676 STEEM	052530fcb8d9fd67d095a183918d8ca66875ba4d

Total: 8,400.000 STEEM

Summary

The user foxy-role has been rewarded with twice the amount of the "donation" within 58 days.

Technical Analysis for STEEM

As the application coin-doubler has the potential to attract numerous investors, STEEM's price is expected to rise.

Technical Analysis for STEEM crypto currency

Boost My Wealth Challenge

If you want to participate from the Steem ecosystem's success, you can do so right now by following a few simple steps.

All author reward from this account will be paid out for an indefinite period of time to 8 participants per comment as Beneficiary Reward.

You are the one who determines your success through your activities and your persistence!

Each of the following steps are evaluated, but aren't mandatory:

If you don't have an account yet, create one for free at Steemit, Inc.
Follow me.
Copy this link https://steemit.com/@abandi and invite your friends to the Steem Community via it on the social networks you use. Below is a template:
If you have been wondering where I have been spending most of my time lately, I'm studying the many opportunities to achieve my Financial Prosperity presented by https://steemit.com/@abandi, and I'm working through the given steps.
Share this post on the social networks you use.
Resteem this post.
Upvote this post.
Comment at least once a week on this blog about your activities outside the Steem ecosystem that are related to the Steem.
Participate in voting for witnesses with the least amount of effort by setting abandi as proxy. Head to the Vote for Witness page. At the very bottom of the page you will see

Type in abandi and click "SET PROXY". Currently this account is voting for the following witnesses as they are the ones who can ensure the safe operation of the Steem blockchain: beargame, cryptoking777, dev.supporters, dlike, enjoylondon, exnihilo.witness, future.witness, hinomaru-jp, hoasen, inwi, juddsmith079, justyy, leverfile, maiyude, matreshka, menacamel, parse, protoss20, rlawlstn123, rnt1, roadofrich, roundblocknew, smt-wherein, steem-agora, steem-dragon, steem-supporter, steem.history, steemchiller, upeross and upvu.witness.
Invest for your bright future by buying some STEEM regularly and only selling some of the profit if necessary. (Think about the power of compound interest.)
Find an exciting post outside your circle of friends on Steem and comment, upvote, etc. it.
Use some of the various applications available on the Steem blockchain.
Head to the steemitblog to get to know other interesting activities within the Steem ecosystem, which can bring you additional rewards from the steemcurator01's upvotes.

Beneficiaries of this post

Following users will receive 12.5% from the Author Reward each: aleghjdo, bluntbarbie, hatwey, pattyoung, salvinp27, sawyerpaul74, ultronweb3 and zytgeth.

Information for beneficiaries, your Upvote on this post will earn you an additional 12.5% Beneficiary Reward to your Curation Reward.

Users on the radar for upcoming Beneficiary Rewards

Following users have also appeared on the radar: archovi-02, bilal566, chatgptxonline, chattanooga1, cliffordwilliams, dixeven, mariavorce, rabiulkhan, sonu96 and web3unfolded.

The decision has been difficult as always, but maybe it will work out in the next rounds. You get mentioned so that you at least get the attention of the followers. You have contributed to the Steem ecosystem's success as well, thank you.