CANNASYS, INC. 8% CONVERTIBLE REDEEMABLE NOTE DUE DECEMBER 12, 2017 BACK END NOTE 1 OF 2

THIS NOTE AND THE COMMON STOCK ISSUABLE UPON CONVERSION OF THIS NOTE HAVE NOT BEEN AND WILL NOT BE REGISTERED WITH THE UNITED STATES SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND THE RULES AND REGULATIONS PROMULGATED THEREUNDER (THE "1933 ACT")

FOR VALUE RECEIVED, CannaSys, Inc. (the "Company") promises to pay to the order of ADAR BAYS, LLC and its authorized successors and Permitted Assigns, defined below, ("Holder"), the aggregate principal face amount of Fifty Seven Thousand Five Hundred Dollars exactly (U.S. $57,500.00) on December 12, 2017 ("Maturity Date") and to pay interest on the principal amount outstanding hereunder at the rate of 8% per annum commencing on December 12, 2016. The interest will be paid to the Holder in whose name this Note is registered on the records of the Company regarding registration and transfers of this Note. The principal of, and interest on, this Note are payable at 3411 Indian Creek Drive, Suite 403, Miami Beach, FL 33140, initially, and if changed, last appearing on the records of the Company as designated in writing by the Holder hereof from time to time. The Company will pay each interest payment and the outstanding principal due upon this Note before or on the Maturity Date, less any amounts required by law to be deducted or withheld, to the Holder of this Note by check or wire transfer addressed to such Holder at the last address appearing on the records of the Company. The forwarding of such check or wire transfer shall constitute a payment of outstanding principal hereunder and shall satisfy and discharge the liability for principal on this Note to the extent of the sum represented by such check or wire transfer. Interest shall be payable in Common Stock (as defined below) pursuant to paragraph 4(b) herein.

This Note is subject to the following additional provisions:

1. This Note is exchangeable for an equal aggregate principal amount of Notes of different authorized denominations, as requested by the Holder surrendering the same. No service charge will be made for such registration or transfer or exchange, except that Holder shall pay any tax or other governmental charges payable in connection therewith. To the extent that Holder subsequently transfers, assigns, sells or exchanges any of the multiple lesser denomination notes, Holder acknowledges that it will provide the Company with Opinions of Counsel as provided for in Section 2(f) of the Securities Purchase Agreement.

2. The Company shall be entitled to withhold from all payments any amounts required to be withheld under applicable laws.

3. This Note may be transferred or exchanged only in compliance with the Securities Act of 1933, as amended ("Act"), applicable state securities laws and Sections 2(f) and 5(f) of the Securities Purchase Agreement. Any attempted transfer to a non-qualifying party shall be treated by the Company as void. Prior to due presentment for transfer of this Note, the Company and any agent of the Company may treat the person in whose name this Note is duly registered on the Company's records as the owner hereof for all other purposes, whether or not this Note be overdue, and neither the Company nor any such agent shall be affected or bound by notice to the contrary. Any Holder of this Note electing to exercise the right of conversion set forth in Section 4(a) hereof, in addition to the requirements set forth in Section 4(a), and any prequalified prospective transferee of this Note, also is required to give the Company written confirmation that this Note is being converted ("Notice of Conversion") in the form annexed hereto as Exhibit A. The date of receipt (including receipt by telecopy) of such Notice of Conversion shall be the Conversion Date. All notices of conversion will be accompanied by an Opinion of Counsel.

4.            (a)               The Holder of this Note is entitled, at any time after 6 months, to convert all or any amount of the principal face amount of this Note then outstanding into shares of the Company's common stock (the "Common Stock") at a price ("Conversion Price") for each share of Common Stock equal to 50% of the lowest trading price of the Common Stock as reported on the National Quotations Bureau OTCQB exchange which the Company's shares are traded or any exchange upon which the Common Stock may be traded in the future ("Exchange"), for the twenty-five prior trading days including the day upon which a Notice of Conversion is received by the Company (provided such Notice of Conversion is delivered together with an Opinion of Counsel, by fax or other electronic method of communication to the Company after 4 P.M. Eastern Standard or Daylight Savings Time if the Holder wishes to include the same day closing price). If the shares have not been delivered within 3 business days, the Notice of Conversion may be rescinded. Such conversion shall be effectuated by the Company delivering the shares of Common Stock to the Holder within 3 business days of receipt by the Company of the Notice of Conversion. Accrued, but unpaid interest shall be subject to conversion. No fractional shares or scrip representing fractions of shares will be issued on conversion, but the number of shares issuable shall be rounded to the nearest whole share. To the extent the Conversion Price of the Company's Common Stock closes below the par value per share, the Company will take all steps necessary to solicit the consent of the stockholders to reduce the par value to the lowest value possible under law. The Company agrees to honor all conversions submitted pending this increase. In the event the Company experiences a DTC "Chill" on its shares, the conversion price shall be decreased to 40% instead of 50% while that "Chill" is in effect. In no event shall the Holder be allowed to effect a conversion if such conversion, along with all other shares of Company Common Stock beneficially owned by the Holder and its affiliates would exceed 9.9% of the outstanding shares of the Common Stock of the Company.

(b) Interest on any unpaid principal balance of this Note shall be paid at the rate of 8% per annum. Interest shall be paid by the Company in Common Stock ("Interest Shares"). Holder may, at any time, send in a Notice of Conversion to the Company for Interest Shares based on the formula provided in Section 4(a) above. The dollar amount converted into Interest Shares shall be all or a portion of the accrued interest calculated on the unpaid principal balance of this Note to the date of such notice.

(c) This Note may not be prepaid, except that if the $57,500 Rule 144 convertible redeemable note issued by the Company of even date herewith is redeemed by the Company within 6 months of the issuance date of such Note, all obligations of the Company under this Note and all obligations of the Holder under the Holder issued Back End Note will be automatically be deemed satisfied and this Note and the Holder issued Back End Note will be automatically be deemed cancelled and of no further force or effect.

(d) Upon (i) a transfer of all or substantially all of the assets of the Company to any person in a single transaction or series of related transactions, (ii) a reclassification, capital reorganization (excluding an increase in authorized capital) or other change or exchange of outstanding shares of the Common Stock, other than a forward or reverse stock split or stock dividend, or (iii) any consolidation or merger of the Company with or into another person or entity in which the Company is not the surviving entity (other than a merger which is effected solely to change the jurisdiction of incorporation of the Company and results in a reclassification, conversion or exchange of outstanding shares of Common Stock solely into shares of Common Stock) (each of items (i), (ii) and (iii) being referred to as a "Sale Event"), then, in each case, the Company shall, upon request of the Holder, redeem this Note in cash for 150% of the principal amount, plus accrued but unpaid interest through the date of redemption, or at the election of the Holder, such Holder may convert the unpaid principal amount of this Note (together with the amount of accrued but unpaid interest) into shares of Common Stock immediately prior to such Sale Event at the Conversion Price.

(e) In case of any Sale Event (not to include a sale of all or substantially all of the Company's assets) in connection with which this Note is not redeemed or converted, the Company shall cause effective provision to be made so that the Holder of this Note shall have the right thereafter, by converting this Note, to purchase or convert this Note into the kind and number of shares of stock or other securities or property (including cash) receivable upon such reclassification, capital reorganization or other change, consolidation or merger by a holder of the number of shares of Common Stock that could have been purchased upon exercise of the Note and at the same Conversion Price, as defined in this Note, immediately prior to such Sale Event. The foregoing provisions shall similarly apply to successive Sale Events. If the consideration received by the holders of Common Stock is other than cash, the value shall be as determined by the Board of Directors of the Company or successor person or entity acting in good faith.

5. No provision of this Note shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of, and interest on, this Note at the time, place, and rate, and in the form, herein prescribed.

6. The Company hereby expressly waives demand and presentment for payment, notice of non-payment, protest, notice of protest, notice of dishonor, notice of acceleration or intent to accelerate, and diligence in taking any action to collect amounts called for hereunder and shall be directly and primarily liable for the payment of all sums owing and to be owing hereto.

7. The Company agrees to pay all costs and expenses, including reasonable attorneys' fees and expenses, which may be incurred by the Holder in collecting any amount due under this Note.

8. If one or more of the following described "Events of Default" shall occur:

(a) The Company shall default in the payment of principal or interest on this Note or any other note issued to the Holder by the Company; or

(b) Any of the representations or warranties made by the Company herein or in any certificate or financial or other written statements heretofore or hereafter furnished by or on behalf of the Company in connection with the execution and delivery of this Note, or the Securities Purchase Agreement under which this note was issued shall be false or misleading in any respect; or

(c) The Company shall fail to perform or observe, in any respect, any covenant, term, provision, condition, agreement or obligation of the Company under this Note or any other note issued to the Holder; or

(d) The Company shall (1) become insolvent (which does not include a "going concern opinion); (2) admit in writing its inability to pay its debts generally as they mature; (3) make an assignment for the benefit of creditors or commence proceedings for its dissolution; (4) apply for or consent to the appointment of a trustee, liquidator or receiver for its or for a substantial part of its property or business; (5) file a petition for bankruptcy relief, consent to the filing of such petition or have filed against it an involuntary petition for bankruptcy relief, all under federal or state laws as applicable; or

(e) A trustee, liquidator or receiver shall be appointed for the Company or for a substantial part of its property or business without its consent and shall not be discharged within sixty (60) days after such appointment; or

(f) Any governmental agency or any court of competent jurisdiction at the instance of any governmental agency shall assume custody or control of the whole or any substantial portion of the properties or assets of the Company; or

(g) One or more money judgments, writs or warrants of attachment, or similar process, in excess of fifty thousand dollars ($50,000) in the aggregate, shall be entered or filed against the Company or any of its properties or other assets and shall remain unpaid, unvacated, unbonded or unstayed for a period of fifteen (15) days or in any event later than five (5) days prior to the date of any proposed sale thereunder; or

(h) Defaulted on or breached any term of any other note of similar debt instrument into which the Company has entered and failed to cure such default within the appropriate grace period; or

(i) The Company shall have its Common Stock delisted from an exchange (including the OTC Markets exchange) or, if the Common Stock trades on an exchange, then trading in the Common Stock shall be suspended for more than 10 consecutive days or ceases to file its 1934 act reports with the SEC;

(j) If a majority of the members of the Board of Directors of the Company on the date hereof are no longer serving as members of the Board;

(k) The Company shall not deliver to the Holder the Common Stock pursuant to paragraph 4 herein without restrictive legend within 3 business days of its receipt of a Notice of Conversion which includes an Opinion of Counsel expressing an opinion which supports the removal of a restrictive legend; or

(l) The Company shall not replenish the reserve set forth in Section 12, within 5 business days of the request of the Holder ; or

(m)  The Company's Common Stock has a closing bid price of less than $0.001 per share for at least 5 consecutive trading days; or

(n) Beginning on the fifth month following the execution of the Note, the aggregate dollar trading volume of the Company's Common Stock is less than forty thousand dollars ($40,000.00) in any 5 consecutive trading days; or

(o) The Company shall cease to be "current" in its filings with the Securities and Exchange Commission; or

(p) The Company shall lose the "bid" price for its stock in a market (including the OTCBB marketplace or other exchange)

Then, or at any time thereafter, unless cured (except for 8(m) and 8(n) which are incurable defaults, the sole remedy of which is to allow the Holder to cancel both this Note and the Holder Issued Note, and in each and every such case, unless such Event of Default shall have been waived in writing by the Holder (which waiver shall not be deemed to be a waiver of any subsequent default) at the option of the Holder and in the Holder's sole discretion, the Holder may consider this Note immediately due and payable, without presentment, demand, protest or (further) notice of any kind (other than notice of acceleration), all of which are hereby expressly waived, anything herein or in any note or other instruments contained to the contrary notwithstanding, and the Holder may immediately, and without expiration of any period of grace, enforce any and all of the Holder's rights and remedies provided herein or any other rights or remedies afforded by law. Upon an Event of Default, interest shall accrue at a default interest rate of 24% per annum or, if such rate is usurious or not permitted by current law, then at the highest rate of interest permitted by law. In the event of a breach of Section 8(k) the penalty shall be $250 per day the shares are not issued beginning on the 4^th day after the conversion notice was delivered to the Company. This penalty shall increase to $500 per day beginning on the 10^th day. The penalty for a breach of Section 8(p) shall be an increase of the outstanding principal amounts by 20%. In case of a breach of Section 8(i), the outstanding principal due under this Note shall increase by 50%. Further, if a breach of Section 8(o) occurs or is continuing after the 6 month anniversary of the Note, then the Holder shall be entitled to use the lowest closing bid price during the delinquency period as a base price for the conversion. For example, if the lowest closing bid price during the delinquency period is $0.01 per share and the conversion discount is 50% the Holder may elect to convert future conversions at $0.005 per share. If this Note is not paid at maturity, the outstanding principal due under this Note shall increase by 10%.

If the Holder shall commence an action or proceeding to enforce any provisions of this Note, including, without limitation, engaging an attorney, then if the Holder prevails in such action, the Holder shall be reimbursed by the Company for its attorneys' fees and other costs and expenses incurred in the investigation, preparation and prosecution of such action or proceeding.

Make-Whole for Failure to Deliver Loss. At the Holder's election, if the Company fails for any reason to deliver to the Holder the conversion shares by the by the 3rd business day following the delivery of a Notice of Conversion to the Company and if the Holder incurs a Failure to Deliver Loss, then at any time the Holder may provide the Company written notice indicating the amounts payable to the Holder in respect of the Failure to Deliver Loss and the Company must make the Holder whole as follows:

Failure to Deliver Loss = [(High trade price at any time on or after the day of exercise) x (Number of conversion shares)]

The Company must pay the Failure to Deliver Loss by cash payment, and any such cash payment must be made by the third business day from the time of the Holder's written notice to the Company.

9. In case any provision of this Note is held by a court of competent jurisdiction to be excessive in scope or otherwise invalid or unenforceable, such provision shall be adjusted rather than voided, if possible, so that it is enforceable to the maximum extent possible, and the validity and enforceability of the remaining provisions of this Note will not in any way be affected or impaired thereby.

10. Neither this Note nor any term hereof may be amended, waived, discharged or terminated other than by a written instrument signed by the Company and the Holder.

11. The Company represents that it is not a "shell" issuer and has never been a "shell" issuer or that if it previously has been a "shell" issuer that at least 6 months have passed since the Company has reported form 10 type information indicating it is no longer a "shell issuer. Further. The Company will instruct its counsel to accept a Rule 144 opinion from Holder's counsel.

12. Prior to cash funding of this Note, The Company will issue irrevocable transfer agent instructions reserving 3x the number of shares of Common Stock necessary to allow the holder to convert this note based on the discounted conversion price set forth in Section 4(a) herewith. Upon full conversion of this Note, the reserve representing this Note shall be cancelled. The Company will pay all transfer agent costs associated with issuing and delivering the shares. If such amounts are to be paid by the Holder, it may deduct such amounts from the Conversion Price. Conversion Notices may be sent to the Company or its transfer agent via electric mail. The Company will instruct its transfer agent to provide the outstanding share information to the Holder in connection with its conversions.

13. The Company will give the Holder direct notice of any corporate actions including but not limited to name changes, stock splits, recapitalizations etc. This notice shall be given to the Holder as soon as possible under law.

14. This Note shall be governed by and construed in accordance with the laws of New York applicable to contracts made and wholly to be performed within the State of New York and shall be binding upon the successors and assigns of each party hereto. The Holder and the Company hereby mutually waive trial by jury and consent to exclusive jurisdiction and venue in the courts of the State of New York or in the Federal courts sitting in the county or city of New York. This Agreement may be executed in counterparts, and the facsimile transmission of an executed counterpart to this Agreement shall be effective as an original.

THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR UNDER THE SECURITIES LAWS OF CERTAIN STATES. THESE SECURITIES ARE SUBJECT TO RESTRICTIONS ON TRANSFERABILITY AND RESALE AND MAY NOT BE TRANSFERRED OR RESOLD EXCEPT AS PERMITTED UNDER THE ACT AND THE APPLICABLE STATE SECURITIES LAWS, PURSUANT TO REGISTRATION OR EXEMPTION THEREFROM. LENDERS SHOULD BE AWARE THAT THEY MAY BE REQUIRED TO BEAR THE FINANCIAL RISKS OF THIS INVESTMENT FOR AN INDEFINITE PERIOD OF TIME. THE ISSUER OF THESE SECURITIES MAY REQUIRE AN OPINION OF COUNSEL IN FORM AND SUBSTANCE SATISFACTORY TO THE ISSUER TO THE EFFECT THAT ANY PROPOSED TRANSFER OR RESALE IS IN COMPLIANCE WITH THE ACT AND ANY APPLICABLE STATE SECURITIES LAWS.

1. Principal and Interest

FOR VALUE RECEIVED, Adar Bays, LLC, a Florida Limited Liability Company (the "Company") hereby absolutely and unconditionally promises to pay to CannaSys, Inc. (the "Lender"), or order, the principal amount of Fifty Seven Thousand Five Hundred Dollars ($57,500.00) no later than August 12, 2017, unless the Lender does not meet the "current information requirements" required under Rule 144 of the Securities Act of 1933, as amended, in which case the Company may declare the offsetting note issued by the Lender on the same date herewith to be in Default (as defined in that note) and cross cancel its payment obligations under this Note as well as the Lenders payment obligations under the offsetting note. This Full Recourse Note shall bear simple interest at the rate of 8%.

2. Repayments and Prepayments; Security.

a. All principal under this Note shall be due and payable no later than August 12, 2017, unless the Lender does not meet the "current information requirements" required under Rule 144 of the Securities Act of 1933, as amended, in which case the Company may declare the offsetting note issued by the Lender on the same date herewith to be in Default (as defined in that note) and cross cancel its payment obligations under this Note as well as the Lenders payment obligations under the offsetting note.

b. The Company may pay this Note at any time. This note may not be assigned by the Lender, except by operation of law.

c. This Note shall initially be secured by the pledge of the $57,500.00 8% convertible promissory note issued to the Company by the Lender on even date herewith (the "Lender Note"). The Company may exchange this collateral for other collateral with an appraised value of at least $57,500.00, by providing 3 days prior written notice to the Lender. If the Lender does not object to the substitution of collateral in that 3 day period, such substitution of collateral shall be deemed to have been accepted by the Lender. Notwithstanding the foregoing, an exchange of collateral for $57,500.00 in cash shall not require the approval of the Lender. Any collateral exchange shall not constitute a waiver of any defaults under a Lender note. All collateral shall be retained by New Venture Attorneys, P.C., which shall act as the escrow agent for the collateral for the benefit of the Lender. The Company may not effect any conversions under the Lender Note until it has made full cash payment for the portion of the Lender Note being converted.

3. Events of Default; Acceleration.

a. The principal amount of this Note is subject to prepayment in whole or in part upon the occurrence and during the continuance of any of the following events (each, an "Event of Default"): the initiation of any bankruptcy, insolvency, moratorium, receivership or reorganization by or against the Company, or a general assignment of assets by the Company for the benefit of creditors. Upon the occurrence of any Event of Default, the entire unpaid principal balance of this Note and all of the unpaid interest accrued thereon shall be immediately due and payable. The Company may offset amounts due to the Lender under this Note by similar amounts that may be due to the Company by the Lender resulting from breaches under the Lender Note.

b. No remedy herein conferred upon the Lender is intended to be exclusive of any other remedy and each and every remedy shall be cumulative and in addition to every other remedy hereunder, now or hereafter existing at law or in equity or otherwise. The Company accepts and agrees that this Note is a full recourse note and that the Holder may exercise any and all remedies available to it under law.

4. Notices.

a. All notices, reports and other communications required or permitted hereunder shall be in writing and may be delivered in person, by telecopy with written confirmation, overnight delivery service or U.S. mail, in which event it may be mailed by first-class, certified or registered, postage prepaid, addressed (i) if to a Lender, at such Lender's address as the Lender shall have furnished the Company in writing and (ii) if to the Company at such address as the Company shall have furnished the Lender(s) in writing.

b. Each such notice, report or other communication shall for all purposes under this Note be treated as effective or having been given when delivered if delivered personally or, if sent by mail, at the earlier of its receipt or 72 hours after the same has been deposited in a regularly maintained receptacle for the deposit of the United States mail, addressed and mailed as aforesaid, or, if sent by electronic communication with confirmation, upon the delivery of electronic communication.

5. Miscellaneous.

a. Neither this Note nor any provisions hereof may be changed, waived, discharged, or terminated orally, but only by a signed statement in writing.

b. No failure or delay by the Lender to exercise any right hereunder shall operate as a waiver thereof, nor shall any single or partial exercise of any right, power or privilege preclude any other right, power or privilege. The provisions of this Note are severable and if any one provision hereof shall be held invalid or unenforceable in whole or in part in any jurisdiction, such invalidity or unenforceability shall affect only such provision in such jurisdiction. This Note expresses the entire understanding of the parties with respect to the transactions contemplated hereby. The Company and every endorser and guarantor of this Note regardless of the time, order or place of signing hereby waives presentment, demand, protest and notice of every kind, and assents to any extension or postponement of the time for payment or any other indulgence, to any substitution, exchange or release of collateral, and to the addition or release of any other party or person primarily or secondarily liable.

c. If Lender retains an attorney for collection of this Note, or if any suit or proceeding is brought for the recovery of all, or any part of, or for protection of the indebtedness respected by this Note, then the Company agrees to pay all costs and expenses of the suit or proceeding, or any appeal thereof, incurred by the Lender, including without limitation, reasonable attorneys' fees.

d. This Note shall for all purposes be governed by, and construed in accordance with the laws of the State of New York (without reference to conflict of laws).

e. This Note shall be binding upon the Company's successors and assigns, and shall inure to the benefit of the Lender's successors and assigns.

IN WITNESS WHEREOF, the Company has caused this Note to be executed by its duly authorized officer to take effect as of the date first hereinabove written.

ADAR BAYS, LLC

By: /s/ Sam Eisenberg

Title: Member

APPROVED:

CANNASYS, INC.

By: /s/ Michael A. Tew

Title: CEO