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    subject of: OpenTimestamps Proof of Existence
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    subject of: OpenTimestamps Proof of Existence
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  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 3
  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 4
  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 5
  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 6
  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 7
  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 8
  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 9
  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 11
  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 16
  track: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 27
album: Learn German Language and Culture: Labour Day in Germany (Holiday Special)
album: Learn German Language and Culture: Mother's Day in Germany (Holiday Special)
album: Learn German Lesson 2: Numbers, Questions and Goodbyes (Absolute Beginner Series A1)
album: Learn German Lesson 3: Simple Questions and Answers for Conversations (Absolute Beginner Series A1)
album: Learn German Language and Culture: Travel and Vacation Vocabulary (Holiday Special)
album: Learn German Lesson 4: Formal Dialogues and Important Verbs (Absolute Beginner Series A1)
album: Learn German Lesson 5: Hobbies and Important Irregular Verbs (Absolute Beginner Series A1)
album: Learn German Language and Culture: Oktoberfest in Germany (Holiday Special)
album: Learn German Language and Culture: Unity Day in Germany (Holiday Special)
album: Learn German Lesson 6: Most Common Verbs and Adverbs of Frequency (Absolute Beginner Series A1)
album: Learn German Language and Culture: Halloween in Germany (Holiday Special)
album: Learn German Lesson 7: Adverbs of Time in German (Absolute Beginner Series A1)
album: Learn German Language and Culture: Christmas in Germany (Holiday Special)
album: Learn German Lesson 8: The Days of the Week and Telling the Time (Absolute Beginner Series A1)
album: Learn German Language and Culture: New Year's Celebrations in Germany (Holiday Special)
album: Learn German Lesson 9: Essential Grammar, Introduction to German Nouns (Absolute Beginner Series A1)
album: Learn German Language and Culture: Valentine's Day in Germany (Holiday Special)
album: Learn German Lesson 10: Adjectives and Conclusion of Season 1 (Absolute Beginner Series A1)
album: Learn German Language and Culture: Easter in Germany (Holiday Special)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: Greetings, Introductions and Numbers (Lesson 1)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: Numbers, Questions and Goodbyes (Lesson 2)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: Simple Questions and Answers for Conversations (Lesson 3)
album: Learn German: Travel and Vacation Vocabulary (Holiday Special 2024)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: Formal Dialogues and Important Verbs (Lesson 4)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: Hobbies and Important Irregular Verbs (Lesson 5)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: Most Common Verbs and Adverbs of Frequency (Lesson 6)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: Adverbs of Time in German (Lesson 7)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: The Days of the Week and Telling the Time (Lesson 8)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: Essential Grammar, Introduction to German Nouns (Lesson 9)
album: Learn German: Oktoberfest in Germany (Holiday Special 2024)
album: Learn German for Beginners While Sleeping with Relaxing Beach Sounds: Adjectives and Conclusion of Season 1 (Lesson 10)
album: Learn German: Unity Day in Germany (Holiday Special 2024)
album: Perfect Waves (Study, Focus, Sleep and Stress Relief)
album: Learn German: Halloween in Germany (Holiday Special 2024)
album: Learn German: Christmas in Germany (Holiday Special 2024)
album: Learn German: New Year's Celebrations in Germany (Holiday Special 2024)
album: Learn German: Valentine's Day in Germany (Holiday Special 2025)
album: Learn German: Easter in Germany (Holiday Special 2025)
album: Learn German: Labour Day in Germany (Holiday Special 2025)
album: Learn German: Mother's Day in Germany (Holiday Special 2025)

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Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 5
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-18T15:22:40Z
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Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 6
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T22:32:59Z
audio: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 6
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Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 7
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
audio: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 7
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Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 8
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  date published: 2023-04-23
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-05T01:12:41Z
audio: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 8
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Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 9
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duration: PT0M33S
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by artist: German Languagetalk
in album: Learn German Lesson 1: Greetings, Introductions and Numbers (Absolute Beginner Series A1)
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  date published: 2023-04-23
isrc code: USDY42331894
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T08:41:42Z
audio: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 9
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Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 11
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by artist: German Languagetalk
in album: Learn German Lesson 1: Greetings, Introductions and Numbers (Absolute Beginner Series A1)
  type: MusicAlbum
  date published: 2023-04-23
isrc code: USDY42331896
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T18:40:26Z
audio: Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 11
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Learn German Lesson 1: Greetings, Introductions and Numbers, Pt. 16
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duration: PT0M37S
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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