Karen Mitzo Hilderbrand
type: MusicGroup
genre: children's music
popularity: 30
followers: 4975
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8374067fcdedc066059dd7b0086f80fc2ba724142d3d119384051dfca41bd5c5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c590579c-0b6e-48be-872b-726c743ef559.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c590579c-0b6e-48be-872b-726c743ef559.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c590579c-0b6e-48be-872b-726c743ef559
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8374067fcdedc066059dd7b0086f80fc2ba724142d3d119384051dfca41bd5c5","name":"Karen Mitzo Hilderbrand","registered_at":"2026-06-12T09:19:00Z","symbol":"NIM0254038","token_address":"0x64120ee24946c1cb488a9f7b1ae0943d3c5415db","type":"artist","uuid":"c590579c-0b6e-48be-872b-726c743ef559"}
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 0x8374067fcdedc066059dd7b0086f80fc2ba724142d3d119384051dfca41bd5c5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c590579c-0b6e-48be-872b-726c743ef559.json and https://artists.proofprofile.net/proofs/artist/c590579c-0b6e-48be-872b-726c743ef559.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x8374067fcdedc066059dd7b0086f80fc2ba724142d3d119384051dfca41bd5c5","name":"Karen Mitzo Hilderbrand","registered_at":"2026-06-12T09:19:00Z","symbol":"NIM0254038","token_address":"0x64120ee24946c1cb488a9f7b1ae0943d3c5415db","type":"artist","uuid":"c590579c-0b6e-48be-872b-726c743ef559"}
album: Twin Sisters: Colors & Shapes
  type: MusicAlbum
  date published: 1994
album: Twin Sisters: Letters & Numbers
  type: MusicAlbum
  date published: 1994
album: Twin Sisters - Italian
  type: MusicAlbum
  date published: 1994
album: Twin Sisters: Letters & Numbers
  type: MusicAlbum
  date published: 1994
album: Twin Sisters - Spanish
  type: MusicAlbum
  date published: 1994
album: Twin Sisters: Letters & Numbers
  type: MusicAlbum
  date published: 1994
album: Twin Sisters: 20 Animal Songs Every Child Should Know
  type: MusicAlbum
  date published: 1994
album: Twin Sisters: Colors & Shapes
  type: MusicAlbum
  date published: 1994
album: Twin Sisters - Spanish
  type: MusicAlbum
  date published: 1994
album: Twin Sisters - German
  type: MusicAlbum
  date published: 1994
album: Twin Sisters - French
  type: MusicAlbum
  date published: 1994
album: Twin Sisters: Nursery Rhymes
  type: MusicAlbum
  date published: 1995
album: Twin Sisters: Nursery Rhymes
  type: MusicAlbum
  date published: 1995
album: Twin Sisters: Birthday Party Songs
  type: MusicAlbum
  date published: 1997
album: Twin Sisters: Birthday Party Songs
  type: MusicAlbum
  date published: 1997
album: Twin Sisters: Rainy Day Silly Songs
  type: MusicAlbum
  date published: 1997
album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
  track: Wonders of the Ocean
    type: MusicRecording
    duration: PT5M26S
    duration ms: 326613
    explicit: false
    by artist: Karen Mitzo Hilderbrand
    in album: Twin Sisters - Nature Sounds
      type: MusicAlbum
      date published: 1998
    genre: children's music
    isrc code: USFEY1221425
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T18:47:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd1bda0b3e92b98d4cd7f0ee526e243a499720cdddd9ec9f1dbb17f5729cf7d42
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958319
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958319
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221425
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T21:49:35Z
    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 0xd1bda0b3e92b98d4cd7f0ee526e243a499720cdddd9ec9f1dbb17f5729cf7d42. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:49:35Z), 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/USFEY1221425.
      date published: 2026-07-16T21:49:35Z
    audio: Wonders of the Ocean
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.82
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.336
      additional property: Energy
        type: PropertyValue
        value: 0.08
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.933
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.579
      additional property: Liveness
        type: PropertyValue
        value: 0.375
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.041
      additional property: Loudness (dB)
        type: PropertyValue
        value: -24.747
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Gentle Breeze of Autumn
    type: MusicRecording
    duration: PT5M8S
    duration ms: 308640
    explicit: false
    by artist: Karen Mitzo Hilderbrand
    in album: Twin Sisters - Nature Sounds
      type: MusicAlbum
      date published: 1998
    genre: children's music
    isrc code: USFEY1221427
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T23:16:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0e5ec81a11c043e494edab9f20e4794e6e74b563ae5fbee4043eaaed02b9b0f0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958796
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958796
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Gentle Breeze of Autumn
  track: Rain's Sweet Sound
  track: Good Morning Sweetheart
  track: Lunar Eclipse
  track: Mother's Sound
  track: A Windy Day
  track: Evening Is Drawing Near
  track: I See a Rainbow
  track: My Playful Friends
  track: Nature's Symphony
album: Twin Sisters: 25 Christmas Favorites
album: Twin Sisters: My First Bible Songs - Rise and Shine and Give God the Glory, Glory
album: Twin Sisters: 25 Action Bible Songs, Vol. 1
album: Twin Sisters: Bible Songs
album: Twin Sisters - Zoos
album: Twin Sisters: Kids Sing Hymns
album: Twin Sisters - Oceans
album: Twin Sisters: Rejoice!
album: Twin Sisters: Split-Track Bible Songs
album: Twin Sisters: Chemistry
album: Twin Sisters - Insects & Spiders
album: Twin Sisters: Softly We Sing
album: Twin Sisters: Away in a Manger, Vol. 1
album: Twin Sisters - Space
album: Twin Sisters: Physics
album: Twin Sisters: Hymns & Bible Songs
album: Twin Sisters: Alphabet
album: Twin Sisters: Mozart - Before You Were Born
album: Twin Sisters: Gospel
album: Twin Sisters: 25 Fun Adventure Songs
album: Twin Sisters: Christmas Through the Eyes of a Child
album: Twin Sisters: 25 Fun Learning Songs
album: Twin Sisters: More Scripture Songs
album: Twin Sisters: 25 Fun Traveling Songs
album: Twin Sisters - Advanced Phonics
album: Twin Sisters: Chatter with the Angels
album: Twin Sisters: 25 Fun Animal Songs
album: Twin Sisters: More Songs for Learning (Split-Track)
album: Twin Sisters: Songs for Learning
album: Twin Sisters: More Songs for Learning
album: Twin Sisters: Up and At 'Em
album: Twin Sisters: Growing in God's Word
album: Twin Sisters: Fun Morning Songs to Start Your Day
album: Twin Sisters: Christmas Saxophone
album: Twin Sisters: Classic Tunes for Kids, Vol. 3
album: Twin Sisters: God - Faithful and True
album: Twin Sisters: Praise - Lift Him Up
album: Twin Sisters: Classic Tunes for Kids, Vol. 1
album: Twin Sisters - Happy Songs for Lazy Days
album: Twin Sisters: Love - No Conditions
album: Twin Sisters - Celebrate America
album: Twin Sisters: Ultimate Bible Songs, Vol. 2
album: Twin Sisters - Ultimate Bible Songs, Vol. 3
album: Twin Sisters: Jesus - Who Is He?
album: Twin Sisters - Hymns for Kids
album: Twin Sisters: Ultimate Bible Songs, Vol. 1
album: Twin Sisters - Celebrate America Split-Track

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221427

OTSTimestamp
type: PropertyValue
value: 2026-07-20T02:19:02Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5ec81a11c043e494edab9f20e4794e6e74b563ae5fbee4043eaaed02b9b0f0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:02Z), 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/USFEY1221427.
date published: 2026-07-20T02:19:02Z

Gentle Breeze of Autumn
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 77.977
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: 0.361
additional property: Energy
  type: PropertyValue
  value: 0.193
additional property: Speechiness
  type: PropertyValue
  value: 0.034
additional property: Acousticness
  type: PropertyValue
  value: 0.744
additional property: Instrumentalness
  type: PropertyValue
  value: 0.935
additional property: Liveness
  type: PropertyValue
  value: 0.487
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.424
additional property: Loudness (dB)
  type: PropertyValue
  value: -19.111
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

Rain's Sweet Sound
type: MusicRecording
duration: PT5M24S
duration ms: 324866
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
genre: children's music
isrc code: USFEY1221428
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-18T10:30:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf578413eebef2cfb0fe25bde4fd00ffb6b8b7221c184ed20f924436984d56ebb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958541
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958541
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221428
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-18T11:37:54Z
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 0xf578413eebef2cfb0fe25bde4fd00ffb6b8b7221c184ed20f924436984d56ebb. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USFEY1221428.
  date published: 2026-07-18T11:37:54Z
audio: Rain's Sweet Sound
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 84.986
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.252
  additional property: Energy
    type: PropertyValue
    value: 0.081
  additional property: Speechiness
    type: PropertyValue
    value: 0.028
  additional property: Acousticness
    type: PropertyValue
    value: 0.913
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.75
  additional property: Liveness
    type: PropertyValue
    value: 0.382
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.061
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.837
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Good Morning Sweetheart
type: MusicRecording
duration: PT6M41S
duration ms: 401893
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
genre: children's music
isrc code: USFEY1221429
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T18:02:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xebd54852191f7f528b9fd21387c02ad46becc1b073ad3e80a81ad21345543bb2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958924
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958924
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221429
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T21:11:47Z
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 0xebd54852191f7f528b9fd21387c02ad46becc1b073ad3e80a81ad21345543bb2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:47Z), 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/USFEY1221429.
  date published: 2026-07-20T21:11:47Z
audio: Good Morning Sweetheart
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.949
  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: 0.354
  additional property: Energy
    type: PropertyValue
    value: 0.1
  additional property: Speechiness
    type: PropertyValue
    value: 0.078
  additional property: Acousticness
    type: PropertyValue
    value: 0.913
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.741
  additional property: Liveness
    type: PropertyValue
    value: 0.31
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.248
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.328
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Lunar Eclipse
type: MusicRecording
duration: PT2M0S
duration ms: 120120
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
genre: children's music
isrc code: USFEY1221432
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T14:11:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4080eba3f49f5667e85ce986bfa898726f57e110b382b4e6cb94e1c214160466
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956822
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956822
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221432
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T18:48:28Z
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 0x4080eba3f49f5667e85ce986bfa898726f57e110b382b4e6cb94e1c214160466. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USFEY1221432.
  date published: 2026-07-05T18:48:28Z
audio: Lunar Eclipse
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 84.214
  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: 0.084
  additional property: Energy
    type: PropertyValue
    value: 0.126
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.086
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.009
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.031
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.806
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Mother's Sound
type: MusicRecording
duration: PT4M50S
duration ms: 290693
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
genre: children's music
isrc code: USFEY1221431
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T18:54:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x069f60de133ee323b7c0ffece1d58917976b25f2f6f4cf8598f801030edbdc8a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958931
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958931
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221431
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T21:15:01Z
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 0x069f60de133ee323b7c0ffece1d58917976b25f2f6f4cf8598f801030edbdc8a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USFEY1221431.
  date published: 2026-07-20T21:15:01Z
audio: Mother's Sound
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 69.607
  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: 0.228
  additional property: Energy
    type: PropertyValue
    value: 0.117
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.924
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.942
  additional property: Liveness
    type: PropertyValue
    value: 0.223
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.114
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.231
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

A Windy Day
type: MusicRecording
duration: PT4M50S
duration ms: 290160
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
genre: children's music
isrc code: USFEY1221433
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T22:26:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfbc783270293d52c41edf0b252aba1d2de4daf6b7c5e32b0be0211fef5dfd68c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958792
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958792
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221433
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T01:30:07Z
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 0xfbc783270293d52c41edf0b252aba1d2de4daf6b7c5e32b0be0211fef5dfd68c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:30:07Z), 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/USFEY1221433.
  date published: 2026-07-20T01:30:07Z
audio: A Windy Day
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 61.586
  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: 0.15
  additional property: Energy
    type: PropertyValue
    value: 0.032
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.895
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.939
  additional property: Liveness
    type: PropertyValue
    value: 0.412
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.057
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.615
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Evening Is Drawing Near
type: MusicRecording
duration: PT5M4S
duration ms: 304853
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
genre: children's music
isrc code: USFEY1221436
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T08:32:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a09fdd9d71c1621995058d8319ca11eacf0ba53311889a403944a7b5c7a5f62
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958705
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221436
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T08:43:25Z
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 0x7a09fdd9d71c1621995058d8319ca11eacf0ba53311889a403944a7b5c7a5f62. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USFEY1221436.
  date published: 2026-07-19T08:43:25Z
audio: Evening Is Drawing Near
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 78.035
  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: 0.343
  additional property: Energy
    type: PropertyValue
    value: 0.109
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.693
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.946
  additional property: Liveness
    type: PropertyValue
    value: 0.169
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.109
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.484
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

I See a Rainbow
type: MusicRecording
duration: PT3M0S
duration ms: 180000
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
genre: children's music
isrc code: USFEY1221439
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T14:36:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6f2f6e791a26e5a7201943096f5837d362ae0f60afc18b077c8df25141ee0424
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958901
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958901
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221439
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T17:38:45Z
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 0x6f2f6e791a26e5a7201943096f5837d362ae0f60afc18b077c8df25141ee0424. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:38:45Z), 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/USFEY1221439.
  date published: 2026-07-20T17:38:45Z
audio: I See a Rainbow
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 76.699
  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: 0.21
  additional property: Energy
    type: PropertyValue
    value: 0.26
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.86
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.815
  additional property: Liveness
    type: PropertyValue
    value: 0.732
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.047
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.37
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

My Playful Friends
type: MusicRecording
duration: PT4M52S
duration ms: 292266
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
genre: children's music
isrc code: USFEY1221437
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T23:23:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x558494396406111bdd3475208b8317603254c6fab385f7bd8b8bb977c708f6ab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958796
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958796
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221437
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T02:25:46Z
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 0x558494396406111bdd3475208b8317603254c6fab385f7bd8b8bb977c708f6ab. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:46Z), 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/USFEY1221437.
  date published: 2026-07-20T02:25:46Z
audio: My Playful Friends
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 169.983
  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: 0.439
  additional property: Energy
    type: PropertyValue
    value: 0.116
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.859
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.03
  additional property: Liveness
    type: PropertyValue
    value: 0.062
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.16
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.514
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Nature's Symphony
type: MusicRecording
duration: PT7M6S
duration ms: 426760
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters - Nature Sounds
  type: MusicAlbum
  date published: 1998
genre: children's music
isrc code: USFEY1221440
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T07:04:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5fd6341965fff3d90c6b6936eb3e28ae512266e756bb50ae54a94e60810eb23a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958691
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958691
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221440
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T07:19:31Z
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 0x5fd6341965fff3d90c6b6936eb3e28ae512266e756bb50ae54a94e60810eb23a. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USFEY1221440.
  date published: 2026-07-19T07:19:31Z
audio: Nature's Symphony
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.858
  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: 0.376
  additional property: Energy
    type: PropertyValue
    value: 0.198
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.847
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.178
  additional property: Liveness
    type: PropertyValue
    value: 0.097
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.09
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.903
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Twin Sisters - Nature Sounds
type: MusicAlbum
date published: 1998

Twin Sisters: 25 Christmas Favorites
type: MusicAlbum
date published: 1998

Twin Sisters: My First Bible Songs - Rise and Shine and Give God the Glory, Glory
type: MusicAlbum
date published: 1998

Twin Sisters: 25 Action Bible Songs, Vol. 1
type: MusicAlbum
date published: 1998

Twin Sisters: Bible Songs
type: MusicAlbum
date published: 1999

Twin Sisters - Zoos
type: MusicAlbum
date published: 1999

Twin Sisters: Kids Sing Hymns
type: MusicAlbum
date published: 1999

Twin Sisters - Oceans
type: MusicAlbum
date published: 1999

Twin Sisters: Rejoice!
type: MusicAlbum
date published: 1999

Twin Sisters: Split-Track Bible Songs
type: MusicAlbum
date published: 1999

Twin Sisters: Chemistry
type: MusicAlbum
date published: 1999

Twin Sisters - Insects & Spiders
type: MusicAlbum
date published: 1999

Twin Sisters: Softly We Sing
type: MusicAlbum
date published: 1999

Twin Sisters: Rejoice!
type: MusicAlbum
date published: 1999

Twin Sisters: Away in a Manger, Vol. 1
type: MusicAlbum
date published: 1999

Twin Sisters - Space
type: MusicAlbum
date published: 1999

Twin Sisters: Kids Sing Hymns
type: MusicAlbum
date published: 1999

Twin Sisters: Physics
type: MusicAlbum
date published: 1999

Twin Sisters: Hymns & Bible Songs
type: MusicAlbum
date published: 1999

Twin Sisters: Softly We Sing
type: MusicAlbum
date published: 1999

Twin Sisters: Alphabet
type: MusicAlbum
date published: 2000

Twin Sisters: Mozart - Before You Were Born
type: MusicAlbum
date published: 2000

Twin Sisters: Gospel
type: MusicAlbum
date published: 2000

Twin Sisters: 25 Fun Adventure Songs
type: MusicAlbum
date published: 2000

Twin Sisters: Christmas Through the Eyes of a Child
type: MusicAlbum
date published: 2000

Twin Sisters: 25 Fun Learning Songs
type: MusicAlbum
date published: 2000

Twin Sisters: More Scripture Songs
type: MusicAlbum
date published: 2000

Twin Sisters: 25 Fun Traveling Songs
type: MusicAlbum
date published: 2000

Twin Sisters - Advanced Phonics
type: MusicAlbum
date published: 2000

Twin Sisters - Advanced Phonics
type: MusicAlbum
date published: 2000

Twin Sisters: Chatter with the Angels
type: MusicAlbum
date published: 2000

Twin Sisters: Christmas Through the Eyes of a Child
type: MusicAlbum
date published: 2000

Twin Sisters: 25 Fun Animal Songs
type: MusicAlbum
date published: 2000

Twin Sisters: 25 Fun Learning Songs
type: MusicAlbum
date published: 2000

Twin Sisters: Mozart - Before You Were Born
type: MusicAlbum
date published: 2000
track: Twinkle, Twinkle, Little Star
  type: MusicRecording
  duration: PT3M12S
  duration ms: 192933
  explicit: false
  by artist: Karen Mitzo Hilderbrand
  in album: Twin Sisters: Mozart - Before You Were Born
    type: MusicAlbum
    date published: 2000
  genre: children's music
  isrc code: USFEY1221376
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T10:09:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x88c69e34ca55ec8d0caf87ffc49083ed78836426f7b9a0273b19e5842050ca2a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221376
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0x88c69e34ca55ec8d0caf87ffc49083ed78836426f7b9a0273b19e5842050ca2a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USFEY1221376.
    date published: 2026-07-03T19:59:51Z
  audio: Twinkle, Twinkle, Little Star
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 117.536
    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: 0.274
    additional property: Energy
      type: PropertyValue
      value: 0.082
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.884
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.952
    additional property: Liveness
      type: PropertyValue
      value: 0.112
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.08
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.83
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Eine kleine Nachtmusik, K. 525: II. Romanze
  type: MusicRecording
  duration: PT3M46S
  duration ms: 226853
  explicit: false
  by artist: Karen Mitzo Hilderbrand
  in album: Twin Sisters: Mozart - Before You Were Born
    type: MusicAlbum
    date published: 2000
  genre: children's music
  isrc code: USFEY1221378
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T16:58:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x75df08d194a7194f55f6a8d8c73ee4ff8b0e8af40002df4e58b61e2cf5ec1528
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958761
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958761
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221378
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T20:00:29Z
  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 0x75df08d194a7194f55f6a8d8c73ee4ff8b0e8af40002df4e58b61e2cf5ec1528. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:29Z), 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/USFEY1221378.
    date published: 2026-07-19T20:00:29Z
  audio: Eine kleine Nachtmusik, K. 525: II. Romanze
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 64.019
    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: 0.155
    additional property: Energy
      type: PropertyValue
      value: 0.122
    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
      type: PropertyValue
      value: 0.711
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.035
    additional property: Liveness
      type: PropertyValue
      value: 0.094
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.202
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.15
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Isis und Osiris
  type: MusicRecording
  duration: PT3M37S
  duration ms: 217813
  explicit: false
  by artist: Karen Mitzo Hilderbrand
  in album: Twin Sisters: Mozart - Before You Were Born
    type: MusicAlbum
    date published: 2000
  genre: children's music
  isrc code: USFEY1221379
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T02:15:29+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7892abd2fe77dea28bc9192f35d3a7548081d2bf09b4789a82e932ec35f30967
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958644
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958644
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Isis und Osiris
track: Piano Concerto in C Major, K. 467: II. Theme
track: Deh, Vieni Alla Finestra
track: Ein Mädchen oder Weibchen
track: Dove Sono

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221379

OTSTimestamp
type: PropertyValue
value: 2026-07-19T02:21:25Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7892abd2fe77dea28bc9192f35d3a7548081d2bf09b4789a82e932ec35f30967. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/USFEY1221379.
date published: 2026-07-19T02:21:25Z

Isis und Osiris
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 139.687
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: 0.297
additional property: Energy
  type: PropertyValue
  value: 0.095
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.993
additional property: Instrumentalness
  type: PropertyValue
  value: 0.92
additional property: Liveness
  type: PropertyValue
  value: 0.113
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.145
additional property: Loudness (dB)
  type: PropertyValue
  value: -17.597
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

Piano Concerto in C Major, K. 467: II. Theme
type: MusicRecording
duration: PT4M46S
duration ms: 286213
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters: Mozart - Before You Were Born
  type: MusicAlbum
  date published: 2000
genre: children's music
isrc code: USFEY1221383
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T17:58:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x25963a9bb2e06ba7346a3a52daff8cd18dfaa3b9f8b6fa5fa83a52322c1707ef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958765
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958765
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221383
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T21:01:03Z
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 0x25963a9bb2e06ba7346a3a52daff8cd18dfaa3b9f8b6fa5fa83a52322c1707ef. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:03Z), 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/USFEY1221383.
  date published: 2026-07-19T21:01:03Z
audio: Piano Concerto in C Major, K. 467: II. Theme
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.512
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.252
  additional property: Energy
    type: PropertyValue
    value: 0.151
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.919
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.336
  additional property: Liveness
    type: PropertyValue
    value: 0.107
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.08
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.68
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Deh, Vieni Alla Finestra
type: MusicRecording
duration: PT3M33S
duration ms: 213560
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters: Mozart - Before You Were Born
  type: MusicAlbum
  date published: 2000
genre: children's music
isrc code: USFEY1221387
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T00:54:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd99dc9da5ae4581084c4f8a29e6c1f7e929e326b2cb3e58547e4567099023615
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958690
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958690
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221387
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T07:14:39Z
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 0xd99dc9da5ae4581084c4f8a29e6c1f7e929e326b2cb3e58547e4567099023615. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USFEY1221387.
  date published: 2026-07-19T07:14:39Z
audio: Deh, Vieni Alla Finestra
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 155.905
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.203
  additional property: Energy
    type: PropertyValue
    value: 0.146
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.895
  additional property: Liveness
    type: PropertyValue
    value: 0.132
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.234
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.775
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ein Mädchen oder Weibchen
type: MusicRecording
duration: PT6M28S
duration ms: 388053
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters: Mozart - Before You Were Born
  type: MusicAlbum
  date published: 2000
genre: children's music
isrc code: USFEY1221388
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T02:57:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f40ce7aaa4f39f8f89362f2217cf642af4755c1a5e0823bc6df703b8021aeae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958690
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958690
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221388
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T07:14:39Z
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 0x0f40ce7aaa4f39f8f89362f2217cf642af4755c1a5e0823bc6df703b8021aeae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USFEY1221388.
  date published: 2026-07-19T07:14:39Z
audio: Ein Mädchen oder Weibchen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 79.965
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.118
  additional property: Energy
    type: PropertyValue
    value: 0.106
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.962
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.872
  additional property: Liveness
    type: PropertyValue
    value: 0.103
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.132
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.719
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Dove Sono
type: MusicRecording
duration: PT6M17S
duration ms: 377986
explicit: false
by artist: Karen Mitzo Hilderbrand
in album: Twin Sisters: Mozart - Before You Were Born
  type: MusicAlbum
  date published: 2000
genre: children's music
isrc code: USFEY1221391
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T12:38:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x48c85066d09addc77259ff7c9cdd0f16e8c3c91e11e69a30433a60a7f081039b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958733
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958733
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221391
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T15:41:26Z
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 0x48c85066d09addc77259ff7c9cdd0f16e8c3c91e11e69a30433a60a7f081039b. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:41:26Z), 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/USFEY1221391.
  date published: 2026-07-19T15:41:26Z
audio: Dove Sono
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.462
  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: 0.304
  additional property: Energy
    type: PropertyValue
    value: 0.123
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.926
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.181
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.402
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Twin Sisters: More Scripture Songs
type: MusicAlbum
date published: 2000

Twin Sisters: More Songs for Learning (Split-Track)
type: MusicAlbum
date published: 2001

Twin Sisters: Songs for Learning
type: MusicAlbum
date published: 2001

Twin Sisters: More Songs for Learning
type: MusicAlbum
date published: 2001

Twin Sisters: Up and At 'Em
type: MusicAlbum
date published: 2001

Twin Sisters: Songs for Learning
type: MusicAlbum
date published: 2001

Twin Sisters: Growing in God's Word
type: MusicAlbum
date published: 2001

Twin Sisters: Fun Morning Songs to Start Your Day
type: MusicAlbum
date published: 2001

Twin Sisters: More Songs for Learning
type: MusicAlbum
date published: 2001

Twin Sisters: Songs for Learning
type: MusicAlbum
date published: 2001

Twin Sisters: More Songs for Learning
type: MusicAlbum
date published: 2001

Twin Sisters: Christmas Saxophone
type: MusicAlbum
date published: 2002

Twin Sisters: Classic Tunes for Kids, Vol. 3
type: MusicAlbum
date published: 2002

Twin Sisters: God - Faithful and True
type: MusicAlbum
date published: 2002

Twin Sisters: Praise - Lift Him Up
type: MusicAlbum
date published: 2002

Twin Sisters: Classic Tunes for Kids, Vol. 1
type: MusicAlbum
date published: 2002

Twin Sisters - Happy Songs for Lazy Days
type: MusicAlbum
date published: 2002

Twin Sisters: Love - No Conditions
type: MusicAlbum
date published: 2002

Twin Sisters - Celebrate America
type: MusicAlbum
date published: 2002

Twin Sisters: Ultimate Bible Songs, Vol. 2
type: MusicAlbum
date published: 2002

Twin Sisters: Classic Tunes for Kids, Vol. 1
type: MusicAlbum
date published: 2002

Twin Sisters: Ultimate Bible Songs, Vol. 2
type: MusicAlbum
date published: 2002

Twin Sisters - Ultimate Bible Songs, Vol. 3
type: MusicAlbum
date published: 2002

Twin Sisters: God - Faithful and True
type: MusicAlbum
date published: 2002

Twin Sisters: Jesus - Who Is He?
type: MusicAlbum
date published: 2002

Twin Sisters: Jesus - Who Is He?
type: MusicAlbum
date published: 2002

Twin Sisters - Hymns for Kids
type: MusicAlbum
date published: 2002

Twin Sisters: Praise - Lift Him Up
type: MusicAlbum
date published: 2002

Twin Sisters: Love - No Conditions
type: MusicAlbum
date published: 2002

Twin Sisters: Ultimate Bible Songs, Vol. 1
type: MusicAlbum
date published: 2002

Twin Sisters: Classic Tunes for Kids, Vol. 3
type: MusicAlbum
date published: 2002

Twin Sisters - Celebrate America Split-Track
type: MusicAlbum
date published: 2002

Twin Sisters: Favorite Learning Songs
type: MusicAlbum
date published: 2002

Twin Sisters: Classic Tunes for Kids, Vol. 2
type: MusicAlbum
date published: 2002

Twin Sisters: Instrumental Hymns, Vol. 1
type: MusicAlbum
date published: 2003

Twin Sisters - Baby's First Ocean Dreams
type: MusicAlbum
date published: 2003

Twin Sisters: Feels Like Christmas
type: MusicAlbum
date published: 2003

Twin Sisters: Instrumental Hymns, Vol. 4
type: MusicAlbum
date published: 2003

Twin Sisters: Instrumental Hymns, Vol. 3
type: MusicAlbum
date published: 2003

Twin Sisters: A Saxophone Season
type: MusicAlbum
date published: 2003

Twin Sisters - Ocean Dreams
type: MusicAlbum
date published: 2003

Twin Sisters: Instrumental Hymns, Vol. 2
type: MusicAlbum
date published: 2003

Twin Sisters: Instrumental Hymns, Vol. 2
type: MusicAlbum
date published: 2003

Twin Sisters: Gentle Lullabies
type: MusicAlbum
date published: 2003

Twin Sisters: Peaceful Lullabies
type: MusicAlbum
date published: 2003

Twin Sisters: Fun Animal Songs
type: MusicAlbum
date published: 2003

Twin Sisters: Tender Lullabies
type: MusicAlbum
date published: 2003

Twin Sisters: Lullaby Blessings - Jesus Loves Me This I Know
type: MusicAlbum
date published: 2003

Twin Sisters: Quiet Lullabies
type: MusicAlbum
date published: 2003

Twin Sisters: Instrumental Hymns, Vol. 3
type: MusicAlbum
date published: 2003

Twin Sisters: Instrumental Hymns, Vol. 4
type: MusicAlbum
date published: 2003

Twin Sisters: Sing-Along Fun
type: MusicAlbum
date published: 2003

Twin Sisters: Christmas Morning
type: MusicAlbum
date published: 2003

Twin Sisters: Camp Songs, Vol. 4
type: MusicAlbum
date published: 2004

Twin Sisters - Daddy's Lullabies Instrumental
type: MusicAlbum
date published: 2004

Twin Sisters: Easy Listening Christmas
type: MusicAlbum
date published: 2004

Twin Sisters: Camp Songs, Vol. 4
type: MusicAlbum
date published: 2004

Twin Sisters: Mommy's Lullabies
type: MusicAlbum
date published: 2004

Twin Sisters: Camp Songs, Vol. 3
type: MusicAlbum
date published: 2004

Twin Sisters: Mommy's Lullabies
type: MusicAlbum
date published: 2004

Twin Sisters - Soothing Sounds
type: MusicAlbum
date published: 2004

Twin Sisters - Daddy's Lullabies
type: MusicAlbum
date published: 2004

Twin Sisters: Just Get Dressed
type: MusicAlbum
date published: 2004

Twin Sisters: Bathtime Songs
type: MusicAlbum
date published: 2004

Twin Sisters - Soothing Sounds
type: MusicAlbum
date published: 2004
track: Vacuum Cleaner Rumble
  type: MusicRecording
  duration: PT11M33S
  duration ms: 693600
  explicit: false
  by artist: Karen Mitzo Hilderbrand
  in album: Twin Sisters - Soothing Sounds
    type: MusicAlbum
    date published: 2004
  genre: children's music
  isrc code: USFEY1221997
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-14T21:39:14+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa612fa2a9692aa3639875c04da054d1d95986054844700c7fe06abbf6ff50016
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958075
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958075
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFEY1221997
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-14T22:55:31Z
  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 0xa612fa2a9692aa3639875c04da054d1d95986054844700c7fe06abbf6ff50016. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USFEY1221997.
    date published: 2026-07-14T22:55:31Z
  audio: Vacuum Cleaner Rumble
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 136.787
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.148
    additional property: Energy
      type: PropertyValue
      value: 0.175
    additional property: Speechiness
      type: PropertyValue
      value: 0.068
    additional property: Acousticness
      type: PropertyValue
      value: 0.787
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.403
    additional property: Liveness
      type: PropertyValue
      value: 0.391
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.027
    additional property: Loudness (dB)
      type: PropertyValue
      value: -22.038
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Twin Sisters: Camp Songs, Vol. 1
type: MusicAlbum
date published: 2004

Twin Sisters: Camp Songs, Vol. 1
type: MusicAlbum
date published: 2004

Twin Sisters: Christmas Traditions
type: MusicAlbum
date published: 2004

Twin Sisters: Christmas Memories, Vol. 1
type: MusicAlbum
date published: 2004

Twin Sisters: Relaxing Christmas
type: MusicAlbum
date published: 2004

Twin Sisters: Christmas Reflections
type: MusicAlbum
date published: 2004

Twin Sisters: Christmas Piano
type: MusicAlbum
date published: 2005

Twin Sisters: Silly Songs for Kids, Vol. 1
type: MusicAlbum
date published: 2005

Twin Sisters: Preschool Songs
type: MusicAlbum
date published: 2005

Twin Sisters: Caroling Songs 4 Kids
type: MusicAlbum
date published: 2005

Twin Sisters: The B-I-B-L-E
type: MusicAlbum
date published: 2005

Twin Sisters: Be Thou My Vision
type: MusicAlbum
date published: 2005

Twin Sisters: Praise the Lord Together
type: MusicAlbum
date published: 2005

Twin Sisters - Reading & Letter Sounds
type: MusicAlbum
date published: 2005

Twin Sisters: Alphabet & Counting
type: MusicAlbum
date published: 2005

Twin Sisters: Abc's & 123's
type: MusicAlbum
date published: 2005

Twin Sisters: Kids' Traveling Songs, Vol. 2
type: MusicAlbum
date published: 2005

Twin Sisters: Kids' Traveling Songs, Vol. 3
type: MusicAlbum
date published: 2005

Twin Sisters: Kids' Party Songs
type: MusicAlbum
date published: 2005

Twin Sisters: Action Bible Songs
type: MusicAlbum
date published: 2005

Twin Sisters: Silly Songs for Kids, Vol. 4
type: MusicAlbum
date published: 2005

Twin Sisters: Holy, Holy, Holy
type: MusicAlbum
date published: 2005

Twin Sisters: Kids' Traveling Songs, Vol. 1
type: MusicAlbum
date published: 2005

Twin Sisters: Kids' Traveling Songs, Vol. 2
type: MusicAlbum
date published: 2005

Twin Sisters: Baby's First Lullabies
type: MusicAlbum
date published: 2005

Twin Sisters: Christmas Story 4 Kids
type: MusicAlbum
date published: 2005

Twin Sisters: Christmas Songs 4 Kids
type: MusicAlbum
date published: 2005

Twin Sisters: America the Beautiful
type: MusicAlbum
date published: 2005

Twin Sisters: Fun Learning Songs
type: MusicAlbum
date published: 2005

Twin Sisters: Silly Songs for Kids, Vol. 2
type: MusicAlbum
date published: 2005

Twin Sisters: Jesus Loves the Little Children
type: MusicAlbum
date published: 2005

Twin Sisters: Silly Songs for Kids, Vol. 3
type: MusicAlbum
date published: 2005

Twin Sisters: On the Farm
type: MusicAlbum
date published: 2005

Twin Sisters: Draw Me Nearer
type: MusicAlbum
date published: 2005

Twin Sisters: More Kindergarten Songs
type: MusicAlbum
date published: 2005

Twin Sisters: O Worship the King
type: MusicAlbum
date published: 2005

Twin Sisters: Gross Songs Kids Love to Sing
type: MusicAlbum
date published: 2005

Twin Sisters: Silly Songs for Kids, Vol. 2
type: MusicAlbum
date published: 2005

Twin Sisters: Huge Machines
type: MusicAlbum
date published: 2006

Twin Sisters - More Baby Dreams
type: MusicAlbum
date published: 2006

Twin Sisters: Prayers of My Heart
type: MusicAlbum
date published: 2006

Twin Sisters: Nursery Rhymes - Humpty Dumpty Sat on a Wall and More
type: MusicAlbum
date published: 2006

Twin Sisters: Giggly Wiggly Songs for Kids
type: MusicAlbum
date published: 2006

Twin Sisters: More Giggly Wiggly Songs for Kids
type: MusicAlbum
date published: 2006

Twin Sisters: Duérmete, Mi Niño
type: MusicAlbum
date published: 2006

Twin Sisters: Sing and Learn Bilingual Songs for Kids in Spanish
type: MusicAlbum
date published: 2006

Twin Sisters: It's Night-Night Time
type: MusicAlbum
date published: 2006

Twin Sisters: Duérmete, Mi Niño
type: MusicAlbum
date published: 2006

Twin Sisters - Heavenly Lullabies
type: MusicAlbum
date published: 2006

Twin Sisters: Precious Baby, Vol. 2
type: MusicAlbum
date published: 2006

Twin Sisters: Llegó la Noche
type: MusicAlbum
date published: 2006

Twin Sisters: It's Night-Night Time
type: MusicAlbum
date published: 2006

Twin Sisters: I Like Colors
type: MusicAlbum
date published: 2006

Twin Sisters: Baby Dreams
type: MusicAlbum
date published: 2006

Twin Sisters: Jesus Loves Even Me
type: MusicAlbum
date published: 2006

Twin Sisters - Candlelight Serenades
type: MusicAlbum
date published: 2006

Twin Sisters: Toddler Sing & Learn, Vol. 1
type: MusicAlbum
date published: 2006

Twin Sisters: Precious Baby, Vol. 1
type: MusicAlbum
date published: 2006

Twin Sisters - Bedtime Songs
type: MusicAlbum
date published: 2006

Twin Sisters - Sleep, My Little One
type: MusicAlbum
date published: 2006

Twin Sisters: More Holiday Entertaining
type: MusicAlbum
date published: 2006

Twin Sisters: Diez en la Cama
type: MusicAlbum
date published: 2006

Twin Sisters: 25 Favorite Christmas Songs for Your Family
type: MusicAlbum
date published: 2006

Twin Sisters: In His Presence
type: MusicAlbum
date published: 2006

Twin Sisters: More Good Night Angel
type: MusicAlbum
date published: 2006

Twin Sisters: Traveling Tunes
type: MusicAlbum
date published: 2006

Twin Sisters: Precious Baby, Vol. 4
type: MusicAlbum
date published: 2006

Twin Sisters: Prayers of My Heart
type: MusicAlbum
date published: 2006

Twin Sisters: Holiday Entertaining
type: MusicAlbum
date published: 2006

Twin Sisters: Blessed Slumber
type: MusicAlbum
date published: 2006

Twin Sisters - Alphabet Songs
type: MusicAlbum
date published: 2006

Twin Sisters: Duerme, Mi Pequeñito
type: MusicAlbum
date published: 2006

Twin Sisters: Mother Goose Songs
type: MusicAlbum
date published: 2006

Twin Sisters: Good Night Angel
type: MusicAlbum
date published: 2006

Twin Sisters - More Sleep, Baby Sleep
type: MusicAlbum
date published: 2006

Twin Sisters - Sleep, Baby Sleep
type: MusicAlbum
date published: 2006

Twin Sisters: Fun Learning Songs, Vol. 2
type: MusicAlbum
date published: 2006

Twin Sisters: Jolly Old St. Nicholas
type: MusicAlbum
date published: 2006

Twin Sisters: Preschool Songs, Vol. 1
type: MusicAlbum
date published: 2006

Twin Sisters: Precious Baby, Vol. 3
type: MusicAlbum
date published: 2006

Twin Sisters: More Bedtime Songs
type: MusicAlbum
date published: 2006

Twin Sisters: Animal Learning Songs
type: MusicAlbum
date published: 2006

Twin Sisters: More Blessed Slumber
type: MusicAlbum
date published: 2006

Twin Sisters: Fun Learning Songs, Vol. 1
type: MusicAlbum
date published: 2006

Twin Sisters: A Is for Alligator
type: MusicAlbum
date published: 2006

Twin Sisters: More Mother Goose Songs
type: MusicAlbum
date published: 2006

Twin Sisters: 25 Action Bible Songs, Vol. 2
type: MusicAlbum
date published: 2006

Twin Sisters - Numbers & Counting Songs
type: MusicAlbum
date published: 2006

Twin Sisters: Candlelight Christmas
type: MusicAlbum
date published: 2006

Twin Sisters: Santa's Coming, Vol. 1
type: MusicAlbum
date published: 2006

Know It Alls! Apes!
type: MusicAlbum
date published: 2016-06-07

TOP Phonics Songs
type: MusicAlbum
date published: 2020-07-16

Twin Sisters: The Bear Essentials
type: MusicAlbum
date published: 2021-07-16

Twin Sisters: Jesus the Best Thing About Christmas
type: MusicAlbum
date published: 2021-10-31

Twin Sisters: Sing-Along Christmas Favorites
type: MusicAlbum
date published: 2021-10-31