sad summer
type: MusicGroup
popularity: 6
followers: 538
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbe47cbbaaa3bdf72b86302fa6634d82bbe1c45d72a4e2a2b30eb53f9e8f4746a
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/c8c0fc16-038b-4bdc-a129-fb2a6af92253.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c8c0fc16-038b-4bdc-a129-fb2a6af92253.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c8c0fc16-038b-4bdc-a129-fb2a6af92253
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbe47cbbaaa3bdf72b86302fa6634d82bbe1c45d72a4e2a2b30eb53f9e8f4746a","name":"sad summer","registered_at":"2026-06-20T21:58:01Z","symbol":"NIM1727851","token_address":"0xdaa10583a361b546e0c8f61d188536e0cff6ee50","type":"artist","uuid":"c8c0fc16-038b-4bdc-a129-fb2a6af92253"}
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 0xbe47cbbaaa3bdf72b86302fa6634d82bbe1c45d72a4e2a2b30eb53f9e8f4746a. 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/c8c0fc16-038b-4bdc-a129-fb2a6af92253.json and https://artists.proofprofile.net/proofs/artist/c8c0fc16-038b-4bdc-a129-fb2a6af92253.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0xbe47cbbaaa3bdf72b86302fa6634d82bbe1c45d72a4e2a2b30eb53f9e8f4746a","name":"sad summer","registered_at":"2026-06-20T21:58:01Z","symbol":"NIM1727851","token_address":"0xdaa10583a361b546e0c8f61d188536e0cff6ee50","type":"artist","uuid":"c8c0fc16-038b-4bdc-a129-fb2a6af92253"}
album: TED Talk
  type: MusicAlbum
  date published: 2020-10-01