Playsongs
type: MusicGroup
popularity: 16
followers: 644
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x468004d79bc469259bb76f054cfe97fc1056176268366c405f0b8081c70d284b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953777
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953777
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf16e5cd-3f8d-4359-9775-44687453db46.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf16e5cd-3f8d-4359-9775-44687453db46.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cf16e5cd-3f8d-4359-9775-44687453db46
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:52:51Z
additional property: OTSCanonicalRecord
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 0x468004d79bc469259bb76f054cfe97fc1056176268366c405f0b8081c70d284b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf16e5cd-3f8d-4359-9775-44687453db46.json and https://artists.proofprofile.net/proofs/artist/cf16e5cd-3f8d-4359-9775-44687453db46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
album: Music Activities for Kids 1
  type: MusicAlbum
  date published: 2010-07-07
album: Music Activities for Kids 2
  type: MusicAlbum
  date published: 2011-05-05
  track: Hopping and Sliding
    type: MusicRecording
    duration: PT1M49S
    duration ms: 109923
    explicit: false
    by artist: Playsongs
    in album: Music Activities for Kids 2
      type: MusicAlbum
      date published: 2011-05-05
    isrc code: USCGJ1146221
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T00:18:54+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc20271ea91ee37d1db9200f001ca919c0688e4bdd8f60e854d0e15cd4d85f05b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959087
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959087
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1146221
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T02:05:55Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20271ea91ee37d1db9200f001ca919c0688e4bdd8f60e854d0e15cd4d85f05b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USCGJ1146221.
      date published: 2026-07-22T02:05:55Z
    audio: Hopping and Sliding
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.737
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.757
      additional property: Energy
        type: PropertyValue
        value: 0.251
      additional property: Speechiness
        type: PropertyValue
        value: 0.057
      additional property: Acousticness
        type: PropertyValue
        value: 0.821
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.845
      additional property: Liveness
        type: PropertyValue
        value: 0.121
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.612
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.987
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Slow and Fast
    type: MusicRecording
    duration: PT2M3S
    duration ms: 123252
    explicit: false
    by artist: Playsongs
    in album: Music Activities for Kids 2
      type: MusicAlbum
      date published: 2011-05-05
    isrc code: USCGJ1146225
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T02:14:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc7aef0922a6b43944bbc38bd4cc9f4f06c2063f79e519c106c3584a220a58802
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1146225
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7aef0922a6b43944bbc38bd4cc9f4f06c2063f79e519c106c3584a220a58802. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ1146225.
      date published: 2026-07-03T08:56:35Z
    audio: Slow and Fast
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.965
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.566
      additional property: Energy
        type: PropertyValue
        value: 0.482
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.443
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.924
      additional property: Liveness
        type: PropertyValue
        value: 0.048
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.264
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.769
      additional property: Key Name
      additional property: Mode Name

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major