Marc Copely
type: MusicGroup
description: Marc Copely is an American rock and blues guitarist and songwriter. Described as "...a working-class hero of stadium-sized potential", Copely has been performing since the age of 19. The Worcester, M
popularity: 6
followers: 112
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe45502d754dd842da6a49b0cc61068b60fa7bcd8cf0f6fd4f841a67d4ce92f00
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/5be05c20-0408-4e54-a6f1-434b84ed6286.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5be05c20-0408-4e54-a6f1-434b84ed6286.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5be05c20-0408-4e54-a6f1-434b84ed6286
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe45502d754dd842da6a49b0cc61068b60fa7bcd8cf0f6fd4f841a67d4ce92f00","name":"Marc Copely","registered_at":"2026-06-16T21:31:53Z","symbol":"NIM1181730","token_address":"0x0dfc3a27981121f246ddd134ba98f4ad6697f84a","type":"artist","uuid":"5be05c20-0408-4e54-a6f1-434b84ed6286"}
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 0xe45502d754dd842da6a49b0cc61068b60fa7bcd8cf0f6fd4f841a67d4ce92f00. 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/5be05c20-0408-4e54-a6f1-434b84ed6286.json and https://artists.proofprofile.net/proofs/artist/5be05c20-0408-4e54-a6f1-434b84ed6286.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xe45502d754dd842da6a49b0cc61068b60fa7bcd8cf0f6fd4f841a67d4ce92f00","name":"Marc Copely","registered_at":"2026-06-16T21:31:53Z","symbol":"NIM1181730","token_address":"0x0dfc3a27981121f246ddd134ba98f4ad6697f84a","type":"artist","uuid":"5be05c20-0408-4e54-a6f1-434b84ed6286"}
album: Limited Lifetime Guarantee
  type: MusicAlbum
  date published: 2002-05-21