Colo Polena
type: MusicGroup
genre: choral
popularity: 13
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a9a440bc3d51c1776d15ec3903d20f43c533fd7e049d277fe1088b9a19756f6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953694
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953694
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e01ba5c-fd87-4039-b9d5-82b12db944b9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e01ba5c-fd87-4039-b9d5-82b12db944b9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6e01ba5c-fd87-4039-b9d5-82b12db944b9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:38:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8a9a440bc3d51c1776d15ec3903d20f43c533fd7e049d277fe1088b9a19756f6","name":"Colo Polena","registered_at":"2026-06-14T15:56:35Z","symbol":"NIM0502689","token_address":"0x31fc8f21d23083567d498b5bde4ebe531f97bcd9","type":"artist","uuid":"6e01ba5c-fd87-4039-b9d5-82b12db944b9"}
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 0x8a9a440bc3d51c1776d15ec3903d20f43c533fd7e049d277fe1088b9a19756f6. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e01ba5c-fd87-4039-b9d5-82b12db944b9.json and https://artists.proofprofile.net/proofs/artist/6e01ba5c-fd87-4039-b9d5-82b12db944b9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T21:38:09Z
  text: {"copyright_id":"0x8a9a440bc3d51c1776d15ec3903d20f43c533fd7e049d277fe1088b9a19756f6","name":"Colo Polena","registered_at":"2026-06-14T15:56:35Z","symbol":"NIM0502689","token_address":"0x31fc8f21d23083567d498b5bde4ebe531f97bcd9","type":"artist","uuid":"6e01ba5c-fd87-4039-b9d5-82b12db944b9"}