1991
type: MusicGroup
description: It was the final year of the Cold War, which had begun in 1947. Towards the end of the year, the Soviet Union collapsed, leaving fifteen sovereign republics and the CIS in its place. In July 1991, Ind
popularity: 3
followers: 227
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b972bf5b439ce7de7d6cfd0d25b840c8f77af078d62134b3d0ca9549018b710. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3254559-8c1f-431f-8d75-ec585f491daa.json and https://artists.proofprofile.net/proofs/artist/b3254559-8c1f-431f-8d75-ec585f491daa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
album: Hodet Over Vann
  type: MusicAlbum
  date published: 2023-08-11
  track: Hodet Over Vann
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    duration: PT4M17S
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    by artist: 1991
    in album: Hodet Over Vann
      type: MusicAlbum
      date published: 2023-08-11
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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
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60327ae4537cdcd45926c1627a950e570fb34639447de9dbf799d0b6f0a8704b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QMBZ92364415.
      date published: 2026-07-22T00:50:00Z
    audio: Hodet Over Vann
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album: Månar
  type: MusicAlbum
  date published: 2023-12-08
album: Skandinavisk Misantropi
  type: MusicAlbum
  date published: 2024-04-05
album: Regn
  type: MusicAlbum
  date published: 2025-08-15
album: Slipp meg inn igjen
  type: MusicAlbum
  date published: 2025-10-03
album: Samme for meg
  type: MusicAlbum
  date published: 2025-11-14