Svartálfar
type: MusicGroup
genre: folk metal
genre: medieval metal
genre: neofolk
description: In Norse cosmology, svartálfar (O.N. "black elves", "swarthy elves", sing. svartálfr), also called myrkálfar ("dark elves", "dusky elves", "murky elves", sing. myrkálfr),Michaud, Joseph Fr; Michaud, L
popularity: 5
followers: 1040
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ada0ca6af789ac2d74a61867c914b4a0fcc8b073213ebb491c23d7222c9cb73
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953939
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953939
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/210bb4bb-6b5c-442b-831d-f3b64f22d8b7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/210bb4bb-6b5c-442b-831d-f3b64f22d8b7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/210bb4bb-6b5c-442b-831d-f3b64f22d8b7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:40:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8ada0ca6af789ac2d74a61867c914b4a0fcc8b073213ebb491c23d7222c9cb73","name":"Svartálfar","registered_at":"2026-06-16T01:02:33Z","symbol":"NIM0888296","token_address":"0xf601a7541a4a31cff56ef7eb2b3df65f955e1785","type":"artist","uuid":"210bb4bb-6b5c-442b-831d-f3b64f22d8b7"}
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 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 0x8ada0ca6af789ac2d74a61867c914b4a0fcc8b073213ebb491c23d7222c9cb73. Chain 2 (Bitcoin): anchored in block 953939 (2026-06-16T11:40:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/210bb4bb-6b5c-442b-831d-f3b64f22d8b7.json and https://artists.proofprofile.net/proofs/artist/210bb4bb-6b5c-442b-831d-f3b64f22d8b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:40:13Z
  text: {"copyright_id":"0x8ada0ca6af789ac2d74a61867c914b4a0fcc8b073213ebb491c23d7222c9cb73","name":"Svartálfar","registered_at":"2026-06-16T01:02:33Z","symbol":"NIM0888296","token_address":"0xf601a7541a4a31cff56ef7eb2b3df65f955e1785","type":"artist","uuid":"210bb4bb-6b5c-442b-831d-f3b64f22d8b7"}
album: Tonight Sun Rises in Svartálfaheimr
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  date published: 2019-06-10
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