21 ROOM
type: MusicGroup
popularity: 3
followers: 334
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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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  date published: 2026-06-16T13:14:26Z
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type: MusicAlbum
date published: 2017-11-17

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date published: 2017-11-22

Wow (Techno Red Remix)
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date published: 2017-11-24

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date published: 2017-11-28

The World (Techno Red Remix)
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date published: 2017-11-29

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Synthesis
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date published: 2017-12-08

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date published: 2017-12-09

You Will Dance
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date published: 2017-12-11

Synthesis (Format Groove Remix)
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date published: 2017-12-11

Merry Christmas and Jingle Bells
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date published: 2017-12-29

I Do Not Dance
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date published: 2018-01-12

Try It Now
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date published: 2018-01-18

Hey Hey
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date published: 2018-01-19

You Will Dance (Techno Red Remix)
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date published: 2018-02-02

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Job (Format Groove Remix)
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Root (Format Groove Remix)
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My Mi Mi Mi Job
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One Two Three Four
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Happiness
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One Two Three Four (Format Groove Remix)
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date published: 2018-04-16

My Crazy World
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Job (Oziriz Remix)
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My Crazy World (Oziriz Remix)
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date published: 2018-05-04

One Two Three Four (Oziriz Remix)
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PRVA152
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date published: 2018-05-30

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date published: 2018-06-08

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Easy Ecstasy (Remix)
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Melodic (Format Groove Remix)
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OK (Remix)
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date published: 2018-09-24

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Search for Groove (Big Bunny Remix)
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type: MusicAlbum
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type: MusicAlbum
date published: 2025-08-28