Materia Gris
type: MusicGroup
popularity: 5
followers: 127
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x72f823e812d300ce8c966d30ebb4a93c75472ff8c5db04902735b194781a4ee8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/629ac7b7-4c6f-4b36-a3b1-0f643e3d43fa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/629ac7b7-4c6f-4b36-a3b1-0f643e3d43fa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/629ac7b7-4c6f-4b36-a3b1-0f643e3d43fa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x72f823e812d300ce8c966d30ebb4a93c75472ff8c5db04902735b194781a4ee8","name":"Materia Gris","registered_at":"2026-06-16T23:55:52Z","symbol":"NIM1216077","token_address":"0xcf553f95bdd50c2f194b6213f62ee4a84176369e","type":"artist","uuid":"629ac7b7-4c6f-4b36-a3b1-0f643e3d43fa"}
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 0x72f823e812d300ce8c966d30ebb4a93c75472ff8c5db04902735b194781a4ee8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/629ac7b7-4c6f-4b36-a3b1-0f643e3d43fa.json and https://artists.proofprofile.net/proofs/artist/629ac7b7-4c6f-4b36-a3b1-0f643e3d43fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x72f823e812d300ce8c966d30ebb4a93c75472ff8c5db04902735b194781a4ee8","name":"Materia Gris","registered_at":"2026-06-16T23:55:52Z","symbol":"NIM1216077","token_address":"0xcf553f95bdd50c2f194b6213f62ee4a84176369e","type":"artist","uuid":"629ac7b7-4c6f-4b36-a3b1-0f643e3d43fa"}
album: Yo soy
  type: MusicAlbum
  date published: 2022-04-17
album: Valora
  type: MusicAlbum
  date published: 2022-04-29
album: Ego
  type: MusicAlbum
  date published: 2022-08-06
album: Confianza
  type: MusicAlbum
  date published: 2024-06-26
album: Apariencias
  type: MusicAlbum
  date published: 2024-06-30
album: PUBLICIDAD GRATIS
  type: MusicAlbum
  date published: 2025-09-26
album: Arte Urbano
  type: MusicAlbum
  date published: 2025-10-24