7 Cuerdas
type: MusicGroup
popularity: 4
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc707f5e211dfe90d982521a3c8b527670e954814ed34ad8abc027a888a718b70
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8bed27b-8137-446e-9a47-33ecda70e2fe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8bed27b-8137-446e-9a47-33ecda70e2fe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c8bed27b-8137-446e-9a47-33ecda70e2fe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc707f5e211dfe90d982521a3c8b527670e954814ed34ad8abc027a888a718b70","name":"7 Cuerdas","registered_at":"2026-06-20T22:25:39Z","symbol":"NIM1733168","token_address":"0xf96e5d6633310bcec29654ee6de02e47c638820c","type":"artist","uuid":"c8bed27b-8137-446e-9a47-33ecda70e2fe"}
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 0xc707f5e211dfe90d982521a3c8b527670e954814ed34ad8abc027a888a718b70. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8bed27b-8137-446e-9a47-33ecda70e2fe.json and https://artists.proofprofile.net/proofs/artist/c8bed27b-8137-446e-9a47-33ecda70e2fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0xc707f5e211dfe90d982521a3c8b527670e954814ed34ad8abc027a888a718b70","name":"7 Cuerdas","registered_at":"2026-06-20T22:25:39Z","symbol":"NIM1733168","token_address":"0xf96e5d6633310bcec29654ee6de02e47c638820c","type":"artist","uuid":"c8bed27b-8137-446e-9a47-33ecda70e2fe"}
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