SCHEDULE OF WARRANTS OUTSTANDING AND EXERCISABLE (Details)	Mar. 31, 2024 $ / shares shares
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Warrants Outstanding, Number of Warrants	31,890,289
Weighted Average Remaining Life in Years	1 year 8 months 26 days
Warrants Weighted Average Exercise Price \| $ / shares	$ 0.13
Warrants Outstanding, Number of Exercisable	31,890,289
Warrant [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Warrants Outstanding, Number of Exercisable	33,000,000
Exercise Price 1 [Member] \| Warrant [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Warrants Outstanding, Exercise Price \| $ / shares	$ 0.13
Warrants Outstanding, Number of Warrants	961,539
Weighted Average Remaining Life in Years	2 years 7 months 24 days
Warrants Weighted Average Exercise Price \| $ / shares	$ 0.13
Warrants Outstanding, Number of Exercisable	961,539
Exercise Price 2 [Member] \| Warrant [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Warrants Outstanding, Exercise Price \| $ / shares	$ 0.20
Warrants Outstanding, Number of Warrants	4,373,750
Warrants Weighted Average Exercise Price \| $ / shares	$ 0.20
Warrants Outstanding, Number of Exercisable	4,373,750
Exercise Price 2 [Member] \| Warrant [Member] \| Minimum [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Weighted Average Remaining Life in Years	2 years 10 months 24 days
Exercise Price 2 [Member] \| Warrant [Member] \| Maximum [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Weighted Average Remaining Life in Years	3 years 2 months 23 days
Exercise Price 3 [Member] \| Warrant [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Warrants Outstanding, Exercise Price \| $ / shares	$ 0.12
Warrants Outstanding, Number of Warrants	26,555,000
Warrants Weighted Average Exercise Price \| $ / shares	$ 0.12
Warrants Outstanding, Number of Exercisable	26,555,000
Exercise Price 3 [Member] \| Warrant [Member] \| Minimum [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Weighted Average Remaining Life in Years	1 year 3 months 7 days
Exercise Price 3 [Member] \| Warrant [Member] \| Maximum [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range [Line Items]
Weighted Average Remaining Life in Years	1 year 9 months 29 days

Warrants weighted- average exercise price of warrants.

No definition available.

Name:	OTLC_ClassOfWarrantWeightedAverageExercisePriceOfWarrants
Namespace Prefix:	OTLC_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_WarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=OTLC_ExercisePriceOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=OTLC_ExercisePriceTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=OTLC_ExercisePriceThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: