Sedna
type: MusicGroup
genre: black metal
popularity: 3
followers: 841
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd1dff790debe1bd09579561b9266f582e9fb1a1661b93adfcaaf758fb65ccf38
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03ace55a-9898-4cc5-b1be-f2fbe740af7c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03ace55a-9898-4cc5-b1be-f2fbe740af7c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/03ace55a-9898-4cc5-b1be-f2fbe740af7c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dff790debe1bd09579561b9266f582e9fb1a1661b93adfcaaf758fb65ccf38. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03ace55a-9898-4cc5-b1be-f2fbe740af7c.json and https://artists.proofprofile.net/proofs/artist/03ace55a-9898-4cc5-b1be-f2fbe740af7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T00:30:31Z
album: Sedna
  type: MusicAlbum
  date published: 2014-10-20
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  type: MusicAlbum
  date published: 2016-10-29
album: Dalla Cenere, Il Buio
  type: MusicAlbum
  date published: 2017-01-10
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  date published: 2019-09-13
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album: Anirniq
  type: MusicAlbum
  date published: 2025-01-17
album: Sedna XXIV
  type: MusicAlbum
  date published: 2025-01-31
album: Amarok
  type: MusicAlbum
  date published: 2025-10-17
album: Sedna
  type: MusicAlbum
  date published: 2025-11-03