Rickard Söderberg
type: MusicGroup
description: thumb|268px|Rickard Söderberg and Anne Sofie von Otter at Stockholm Pride 2015 John Rickard Söderberg (born 10 April 1975) is a Swedish tenor, singer and debater. Early life and education Söderberg
popularity: 16
followers: 2269
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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 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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album: Castrato Arias (Uncut Edition)
  type: MusicAlbum
  date published: 2009-09-09
album: Although it's been said many times many ways...
  type: MusicAlbum
  date published: 2010-11-28
album: Tack - Single
  type: MusicAlbum
  date published: 2015-05-31
album: Love4life
  type: MusicAlbum
  date published: 2015-12-01
album: My Man
  type: MusicAlbum
  date published: 2016-09-09
album: My Man
  type: MusicAlbum
  date published: 2016-09-09
album: Make The Yuletide Gay
  type: MusicAlbum
  date published: 2016-11-25
album: Make The Yuletide Gay
  type: MusicAlbum
  date published: 2016-11-25
album: Make The Yuletide Gay
  type: MusicAlbum
  date published: 2016-11-25
album: Encore
  type: MusicAlbum
  date published: 2017-08-18
album: Make The Yuletide Gay (Deluxe Version)
  type: MusicAlbum
  date published: 2017-12-08
album: Make The Yuletide Gay (Deluxe Version)
  type: MusicAlbum
  date published: 2017-12-08
album: It's a Sin
  type: MusicAlbum
  date published: 2018-02-02
album: it's a sin
  type: MusicAlbum
  date published: 2018-02-02
album: Vier Letzte Lieder
  type: MusicAlbum
  date published: 2021-01-22
album: Let's Come Together
  type: MusicAlbum
  date published: 2021-07-23
album: Sieben frühe Lieder
  type: MusicAlbum
  date published: 2022-09-07
album: Memira
  type: MusicAlbum
  date published: 2023-01-02
album: Julenatten
  type: MusicAlbum
  date published: 2025-10-31
track: Min bön
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  by artist: Arja Saijonmaa
  by artist: Rickard Söderberg
  in album: Religiös musik
    type: MusicAlbum
    date published: 2019-02-08
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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: 2026-07-08T03:20:19Z
  audio: Min bön
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