Karel Poláček
type: MusicGroup
description: Karel Poláček (22 March 1892 – 21 January 1945) was a Czech writer, humorist and journalist of Jewish descent. Life Poláček was born in Rychnov nad Kněžnou into the family of a Jewish merchant. He at
popularity: 28
followers: 325
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
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  date published: 2026-06-12T19:24:56Z
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album: Bylo nás pět
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  date published: 1946
  track: Chapter 1.1 - Bylo nás pět
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      date published: 1946
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-03T08:56:35Z
    audio: Chapter 1.1 - Bylo nás pět
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  track: Chapter 1.2 - Bylo nás pět
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      date published: 1946
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-04T07:11:13Z
    audio: Chapter 1.2 - Bylo nás pět
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  track: Chapter 1.3 - Bylo nás pět
  track: Chapter 1.4 & Chapter 2.1 - Bylo nás pět
  track: Chapter 2.2 - Bylo nás pět
  track: Chapter 2.3 - Bylo nás pět
  track: Chapter 2.4 - Bylo nás pět
  track: Chapter 2.5 & Chapter 3.1 - Bylo nás pět
  track: Chapter 3.2 - Bylo nás pět
  track: Chapter 3.3 - Bylo nás pět
  track: Chapter 3.4 - Bylo nás pět
  track: Chapter 3.5 & Chapter 4.1 - Bylo nás pět
  track: Chapter 4.2 - Bylo nás pět
  track: Chapter 4.3 - Bylo nás pět
  track: Chapter 4.4 - Bylo nás pět
  track: Chapter 4.5 & Chapter 5.1 - Bylo nás pět
  track: Chapter 5.2 - Bylo nás pět
  track: Chapter 5.3 - Bylo nás pět
  track: Chapter 5.4 & Chapter 6.1 - Bylo nás pět
  track: Chapter 6.2 - Bylo nás pět
  track: Chapter 6.3 - Bylo nás pět
  track: Chapter 6.4 & Chapter 7.1 - Bylo nás pět
  track: Chapter 7.2 - Bylo nás pět
  track: Chapter 7.3 & Chapter 8.1 - Bylo nás pět
  track: Chapter 8.2 - Bylo nás pět
  track: Chapter 8.3 - Bylo nás pět
  track: Chapter 8.4 & Chapter 9.1 - Bylo nás pět
  track: Chapter 9.2 - Bylo nás pět
  track: Chapter 9.3 - Bylo nás pět
  track: Chapter 9.4 & Chapter 10.1 - Bylo nás pět
  track: Chapter 10.2 - Bylo nás pět
  track: Chapter 10.3 - Bylo nás pět
  track: Chapter 10.4 & Chapter 11.1 - Bylo nás pět
  track: Chapter 11.2 - Bylo nás pět
  track: Chapter 11.3 - Bylo nás pět
  track: Chapter 11.4 - Bylo nás pět
  track: Chapter 11.5 & Chapter 12.1 - Bylo nás pět
  track: Chapter 12.2 - Bylo nás pět
  track: Chapter 12.3 & Chapter 13.1 - Bylo nás pět
  track: Chapter 13.2 - Bylo nás pět
  track: Chapter 13.3 - Bylo nás pět
  track: Chapter 13.4 - Bylo nás pět
  track: Chapter 13.5 & Chapter 14.1 - Bylo nás pět
  track: Chapter 14.2 - Bylo nás pět
  track: Chapter 14.3 - Bylo nás pět
  track: Chapter 14.4 & Chapter 15.1 - Bylo nás pět
  track: Chapter 15.2 - Bylo nás pět
  track: Chapter 15.3 - Bylo nás pět
  track: Chapter 15.4 & Chapter 16.1 - Bylo nás pět
  track: Chapter 16.2 - Bylo nás pět
  track: Chapter 16.3 - Bylo nás pět
  track: Chapter 16.4 & Chapter 17.1 - Bylo nás pět
  track: Chapter 17.2 - Bylo nás pět
  track: Chapter 17.3 & Chapter 18.1 - Bylo nás pět
  track: Chapter 18.2 - Bylo nás pět
  track: Chapter 18.3 & Chapter 19.1 - Bylo nás pět
  track: Chapter 19.2 - Bylo nás pět
  track: Chapter 19.3 - Bylo nás pět
  track: Chapter 19.4 - Bylo nás pět
  track: Chapter 19.5 & Chapter 20.1 - Bylo nás pět
  track: Chapter 20.2 - Bylo nás pět
  track: Chapter 20.3 - Bylo nás pět
  track: Chapter 20.4 - Bylo nás pět
  track: Chapter 20.5 & Chapter 21.1 - Bylo nás pět
  track: Chapter 21.2 - Bylo nás pět
  track: Chapter 21.3 - Bylo nás pět
  track: Chapter 21.4 - Bylo nás pět
  track: Chapter 21.5 & Chapter 22.1 - Bylo nás pět
  track: Chapter 22.2 - Bylo nás pět
  track: Chapter 22.3 - Bylo nás pět
  track: Chapter 22.4 - Bylo nás pět
  track: Chapter 22.5 & Chapter 23.1 - Bylo nás pět
  track: Chapter 23.2 - Bylo nás pět
  track: Chapter 23.3 - Bylo nás pět
  track: Chapter 23.4 - Bylo nás pět
  track: Chapter 24.2 - Bylo nás pět
  track: Chapter 24.3 - Bylo nás pět
  track: Chapter 24.4 & Chapter 25.1 - Bylo nás pět

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Chapter 1.3 - Bylo nás pět
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-17T09:14:21Z
audio: Chapter 1.3 - Bylo nás pět
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Chapter 1.4 & Chapter 2.1 - Bylo nás pět
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-04T14:03:39Z
audio: Chapter 1.4 & Chapter 2.1 - Bylo nás pět
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Chapter 2.2 - Bylo nás pět
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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: 2026-07-03T21:18:05Z
audio: Chapter 2.2 - Bylo nás pět
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Chapter 2.3 - Bylo nás pět
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-17T08:27:55Z
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Chapter 2.4 - Bylo nás pět
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  date published: 2026-07-04T10:04:33Z
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Chapter 2.5 & Chapter 3.1 - Bylo nás pět
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  date published: 2026-07-04T14:03:39Z
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Chapter 3.2 - Bylo nás pět
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additional property: OTSVerificationAPI
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  date published: 2026-07-17T08:05:24Z
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Chapter 3.3 - Bylo nás pět
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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  date published: 2026-07-17T19:12:23Z
audio: Chapter 3.3 - Bylo nás pět
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Chapter 3.4 - Bylo nás pět
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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  date published: 2026-07-17T23:18:11Z
audio: Chapter 3.4 - Bylo nás pět
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Chapter 3.5 & Chapter 4.1 - Bylo nás pět
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-18T04:13:26Z
audio: Chapter 3.5 & Chapter 4.1 - Bylo nás pět
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Chapter 4.2 - Bylo nás pět
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-17T04:59:09Z
audio: Chapter 4.2 - Bylo nás pět
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Chapter 4.3 - Bylo nás pět
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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: 2026-07-04T02:23:20Z
audio: Chapter 4.3 - Bylo nás pět
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Chapter 4.4 - Bylo nás pět
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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: 2026-07-04T02:23:20Z
audio: Chapter 4.4 - Bylo nás pět
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Chapter 4.5 & Chapter 5.1 - Bylo nás pět
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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: 2026-07-04T14:03:39Z
audio: Chapter 4.5 & Chapter 5.1 - Bylo nás pět
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Chapter 5.2 - Bylo nás pět
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212853
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: Chapter 5.2 - Bylo nás pět
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Chapter 5.3 - Bylo nás pět
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  date published: 2026-07-04T11:19:20Z
audio: Chapter 5.3 - Bylo nás pět
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Chapter 5.4 & Chapter 6.1 - Bylo nás pět
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-04T10:04:33Z
audio: Chapter 5.4 & Chapter 6.1 - Bylo nás pět
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Chapter 6.2 - Bylo nás pět
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additional property: OTSVerificationAPI
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  date published: 2026-07-17T07:58:28Z
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Chapter 6.3 - Bylo nás pět
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  date published: 2026-07-05T01:12:41Z
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Chapter 6.4 & Chapter 7.1 - Bylo nás pět
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  date published: 2026-07-18T19:27:02Z
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Chapter 7.2 - Bylo nás pět
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  date published: 2026-07-18T17:06:26Z
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Chapter 7.3 & Chapter 8.1 - Bylo nás pět
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Chapter 8.2 - Bylo nás pět
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Chapter 8.3 - Bylo nás pět
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Chapter 8.4 & Chapter 9.1 - Bylo nás pět
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  date published: 2026-07-05T05:07:15Z
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Chapter 9.2 - Bylo nás pět
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  date published: 2026-07-19T00:54:50Z
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Chapter 9.3 - Bylo nás pět
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  date published: 2026-07-18T21:29:37Z
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Chapter 9.4 & Chapter 10.1 - Bylo nás pět
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  date published: 2026-07-18T19:27:02Z
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Chapter 10.2 - Bylo nás pět
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  date published: 2026-07-05T05:07:15Z
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Chapter 10.3 - Bylo nás pět
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Chapter 10.4 & Chapter 11.1 - Bylo nás pět
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Chapter 11.2 - Bylo nás pět
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Chapter 11.3 - Bylo nás pět
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-19T22:50:02Z
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Chapter 11.4 - Bylo nás pět
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  date published: 2026-07-19T18:59:39Z
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Chapter 11.5 & Chapter 12.1 - Bylo nás pět
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  date published: 2026-07-20T13:17:34Z
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Chapter 12.2 - Bylo nás pět
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  date published: 2026-07-05T10:01:46Z
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Chapter 12.3 & Chapter 13.1 - Bylo nás pět
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-05T12:31:54Z
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Chapter 13.2 - Bylo nás pět
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-19T18:24:38Z
audio: Chapter 13.2 - Bylo nás pět
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Chapter 13.3 - Bylo nás pět
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-20T11:36:58Z
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Chapter 13.4 - Bylo nás pět
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-05T04:47:21Z
audio: Chapter 13.4 - Bylo nás pět
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Chapter 13.5 & Chapter 14.1 - Bylo nás pět
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-20T10:28:11Z
audio: Chapter 13.5 & Chapter 14.1 - Bylo nás pět
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Chapter 14.2 - Bylo nás pět
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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: 2026-07-19T18:01:47Z
audio: Chapter 14.2 - Bylo nás pět
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Chapter 14.3 - Bylo nás pět
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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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  date published: 2026-07-05T19:27:56Z
audio: Chapter 14.3 - Bylo nás pět
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Chapter 14.4 & Chapter 15.1 - Bylo nás pět
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  date published: 2026-07-19T18:04:24Z
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Chapter 15.2 - Bylo nás pět
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-21T11:47:29Z
audio: Chapter 15.2 - Bylo nás pět
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Chapter 15.3 - Bylo nás pět
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-21T03:03:40Z
audio: Chapter 15.3 - Bylo nás pět
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Chapter 15.4 & Chapter 16.1 - Bylo nás pět
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T07:04:12Z
audio: Chapter 15.4 & Chapter 16.1 - Bylo nás pět
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Chapter 16.2 - Bylo nás pět
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  date published: 2026-07-05T19:27:56Z
audio: Chapter 16.2 - Bylo nás pět
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Chapter 16.3 - Bylo nás pět
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-05T19:27:56Z
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Chapter 16.4 & Chapter 17.1 - Bylo nás pět
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additional property: OTSTimestamp
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  date published: 2026-07-05T19:27:56Z
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Chapter 17.2 - Bylo nás pět
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-05T19:27:56Z
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Chapter 17.3 & Chapter 18.1 - Bylo nás pět
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-21T03:03:40Z
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Chapter 18.2 - Bylo nás pět
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Chapter 18.3 & Chapter 19.1 - Bylo nás pět
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  date published: 2026-07-05T19:27:56Z
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Chapter 19.2 - Bylo nás pět
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  date published: 2026-07-20T21:15:01Z
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Chapter 19.3 - Bylo nás pět
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  date published: 2026-07-20T21:15:01Z
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Chapter 19.4 - Bylo nás pět
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  date published: 2026-07-06T07:16:32Z
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Chapter 19.5 & Chapter 20.1 - Bylo nás pět
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  date published: 2026-07-19T15:48:23Z
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Chapter 20.2 - Bylo nás pět
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Chapter 20.3 - Bylo nás pět
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Chapter 20.4 - Bylo nás pět
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Chapter 20.5 & Chapter 21.1 - Bylo nás pět
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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: 2026-07-22T10:40:57Z
audio: Chapter 20.5 & Chapter 21.1 - Bylo nás pět
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Chapter 21.2 - Bylo nás pět
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  date published: 2026-07-22T08:41:42Z
audio: Chapter 21.2 - Bylo nás pět
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Chapter 21.3 - Bylo nás pět
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T10:01:58Z
audio: Chapter 21.3 - Bylo nás pět
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Chapter 21.4 - Bylo nás pět
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  date published: 2026-07-22T13:34:27Z
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Chapter 21.5 & Chapter 22.1 - Bylo nás pět
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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  date published: 2026-07-22T11:35:32Z
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Chapter 22.2 - Bylo nás pět
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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  date published: 2026-07-22T07:33:29Z
audio: Chapter 22.2 - Bylo nás pět
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Chapter 22.3 - Bylo nás pět
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  date published: 2026-07-18T16:47:25Z
audio: Chapter 22.3 - Bylo nás pět
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Chapter 22.4 - Bylo nás pět
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T07:19:23Z
audio: Chapter 22.4 - Bylo nás pět
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Chapter 22.5 & Chapter 23.1 - Bylo nás pět
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212908
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T08:06:31Z
additional property: OTSVerifyInstructions
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T08:06:31Z
audio: Chapter 22.5 & Chapter 23.1 - Bylo nás pět
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Chapter 23.2 - Bylo nás pět
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212909
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T23:41:40Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T23:41:40Z
audio: Chapter 23.2 - Bylo nás pět
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Chapter 23.3 - Bylo nás pět
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212910
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T01:07:00Z
additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T01:07:00Z
audio: Chapter 23.3 - Bylo nás pět
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Chapter 23.4 - Bylo nás pět
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956857
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956857
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212911
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:26:17Z
additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T01:26:17Z
audio: Chapter 23.4 - Bylo nás pět
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Chapter 24.2 - Bylo nás pět
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956822
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212913
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T18:48:28Z
additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-05T18:48:28Z
audio: Chapter 24.2 - Bylo nás pět
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Chapter 24.3 - Bylo nás pět
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212914
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
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  date published: 2026-07-22T08:41:42Z
audio: Chapter 24.3 - Bylo nás pět
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Chapter 24.4 & Chapter 25.1 - Bylo nás pět
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a48174cc4044bd2654f60c04fcfb22473a427c34a5a82122b19e969e83efb5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:24:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212915.
  date published: 2026-07-22T07:24:52Z
audio: Chapter 24.4 & Chapter 25.1 - Bylo nás pět
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Chapter 25.2 - Bylo nás pět
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212916
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed9849138403c7786694cd87db035b76081244beeb15cf652f6c8d5f22a2047. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:21:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212916.
  date published: 2026-07-22T07:21:54Z
audio: Chapter 25.2 - Bylo nás pět
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Chapter 25.3 - Bylo nás pět
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212917
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T07:32:54Z
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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T07:32:54Z
audio: Chapter 25.3 - Bylo nás pět
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Chapter 26.3 - Bylo nás pět
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212920
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T08:27:54Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53941e85306c8dbdc7b14ab8188bb9d0fb5907fea3b4ab66d714d5779b007e05. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:27:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212920.
  date published: 2026-07-21T08:27:54Z
audio: Chapter 26.3 - Bylo nás pět
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Chapter 26.4 - Bylo nás pět
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in album: Bylo nás pět
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958977
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212921
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T06:27:23Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T06:27:23Z
audio: Chapter 26.4 - Bylo nás pět
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Chapter 27.3 - Bylo nás pět
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959123
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212925
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T11:35:32Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T11:35:32Z
audio: Chapter 27.3 - Bylo nás pět
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Chapter 28.2 - Bylo nás pět
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212928
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T20:48:52Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-21T20:48:52Z
audio: Chapter 28.2 - Bylo nás pět
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Chapter 28.3 - Bylo nás pět
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWI10212929
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T08:41:42Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T08:41:42Z
audio: Chapter 28.3 - Bylo nás pět
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Chapter 30.2 - Bylo nás pět
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  date published: 2026-07-21T03:03:40Z
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Chapter 30.5 - Bylo nás pět
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  date published: 2026-07-21T09:01:28Z
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Chapter 31.2 - Bylo nás pět
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Chapter 32.2 - Bylo nás pět
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Chapter 32.3 - Bylo nás pět
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audio: Chapter 32.3 - Bylo nás pět
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