Return To Sender
type: MusicGroup
popularity: 11
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x44732fd2644b0c0a1945fbeb59ac0272be9f3122f5398bb41d689f91fe4cb9e6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953687
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953687
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/687c15cf-1245-4894-bdac-d8f198f1c1a0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/687c15cf-1245-4894-bdac-d8f198f1c1a0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/687c15cf-1245-4894-bdac-d8f198f1c1a0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T20:19:15Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x44732fd2644b0c0a1945fbeb59ac0272be9f3122f5398bb41d689f91fe4cb9e6","name":"Return To Sender","registered_at":"2026-06-14T15:23:44Z","symbol":"NIM0494856","token_address":"0x45dc9c3e4feae397f0002c6f0ac7392d656e1231","type":"artist","uuid":"687c15cf-1245-4894-bdac-d8f198f1c1a0"}
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 0x44732fd2644b0c0a1945fbeb59ac0272be9f3122f5398bb41d689f91fe4cb9e6. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/687c15cf-1245-4894-bdac-d8f198f1c1a0.json and https://artists.proofprofile.net/proofs/artist/687c15cf-1245-4894-bdac-d8f198f1c1a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T20:19:15Z
  text: {"copyright_id":"0x44732fd2644b0c0a1945fbeb59ac0272be9f3122f5398bb41d689f91fe4cb9e6","name":"Return To Sender","registered_at":"2026-06-14T15:23:44Z","symbol":"NIM0494856","token_address":"0x45dc9c3e4feae397f0002c6f0ac7392d656e1231","type":"artist","uuid":"687c15cf-1245-4894-bdac-d8f198f1c1a0"}
album: Meet Me
  type: MusicAlbum
  date published: 2002
album: Return to Sender
  type: MusicAlbum
  date published: 2005-01-01
album: The Grand Exposure
  type: MusicAlbum
  date published: 2008-08-05
track: 枯枰競

枯枰競
type: MusicRecording
duration: PT3M45S
duration ms: 225000
explicit: false
by artist: 塞壬唱片-MSR
by artist: Return To Sender
in album: 相見歡OST
  type: MusicAlbum
  date published: 2025-01-30
isrc code: TWU712500793
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T21:28:48+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd743c1ce078ef50ee320046481bae0ab96d73ac46e78d6ccf506e575f38d4d50
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWU712500793
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd743c1ce078ef50ee320046481bae0ab96d73ac46e78d6ccf506e575f38d4d50. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWU712500793.
  date published: 2026-06-13T15:41:10Z
audio: 枯枰競
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 147.925
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.534
  additional property: Energy
    type: PropertyValue
    value: 0.851
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.001
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.97
  additional property: Liveness
    type: PropertyValue
    value: 0.253
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.472
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.906
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor