Sankar Tantubai
type: MusicGroup
popularity: 9
followers: 71
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb38bbb8330c96b1056a95cb49cd72d5f21c670d4ad17d9d5d283bd18503dd5aa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/adadb73a-a7bc-4b88-9dc2-59e975173fe5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/adadb73a-a7bc-4b88-9dc2-59e975173fe5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/adadb73a-a7bc-4b88-9dc2-59e975173fe5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb38bbb8330c96b1056a95cb49cd72d5f21c670d4ad17d9d5d283bd18503dd5aa","name":"Sankar Tantubai","registered_at":"2026-06-20T11:09:53Z","symbol":"NIM1598022","token_address":"0x1860e2356ec344f6ab00c536e7257a673e04ceaf","type":"artist","uuid":"adadb73a-a7bc-4b88-9dc2-59e975173fe5"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38bbb8330c96b1056a95cb49cd72d5f21c670d4ad17d9d5d283bd18503dd5aa. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adadb73a-a7bc-4b88-9dc2-59e975173fe5.json and https://artists.proofprofile.net/proofs/artist/adadb73a-a7bc-4b88-9dc2-59e975173fe5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xb38bbb8330c96b1056a95cb49cd72d5f21c670d4ad17d9d5d283bd18503dd5aa","name":"Sankar Tantubai","registered_at":"2026-06-20T11:09:53Z","symbol":"NIM1598022","token_address":"0x1860e2356ec344f6ab00c536e7257a673e04ceaf","type":"artist","uuid":"adadb73a-a7bc-4b88-9dc2-59e975173fe5"}
album: Roje Roje Kelekeche
  type: MusicAlbum
  date published: 2021-06-29
  track: Roje Roje Kelekeche
    type: MusicRecording
    duration: PT5M44S
    duration ms: 344920
    explicit: false
    by artist: Sankar Tantubai
    in album: Roje Roje Kelekeche
      type: MusicAlbum
      date published: 2021-06-29
    isrc code: IND712110366
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T12:24:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x101fdae3783219c0e866c3d2c1d7571deeb1e9a411f31f2725f95051745b5c3e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958286
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958286
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IND712110366
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T12:43:37Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101fdae3783219c0e866c3d2c1d7571deeb1e9a411f31f2725f95051745b5c3e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IND712110366.
      date published: 2026-07-16T12:43:37Z
    audio: Roje Roje Kelekeche
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.965
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.383
      additional property: Energy
        type: PropertyValue
        value: 0.994
      additional property: Speechiness
        type: PropertyValue
        value: 0.301
      additional property: Acousticness
        type: PropertyValue
        value: 0.185
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.536
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.623
      additional property: Loudness (dB)
        type: PropertyValue
        value: -1.832
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Babur Mayer Birat Dant
  type: MusicAlbum
  date published: 2023-03-05
album: Nandini
  type: MusicAlbum
  date published: 2025-01-18
  track: Nandini
    type: MusicRecording
    duration: PT5M11S
    duration ms: 311982
    explicit: false
    by artist: Sankar Tantubai
    in album: Nandini
      type: MusicAlbum
      date published: 2025-01-18
    isrc code: INM8T2500102
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-14T19:12:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x12d4c767a2667717dba07a0ed72bb3a5252d2157f8b79cad397abfacfd71e4c1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958054
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958054
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INM8T2500102
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-14T19:33:24Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d4c767a2667717dba07a0ed72bb3a5252d2157f8b79cad397abfacfd71e4c1. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/INM8T2500102.
      date published: 2026-07-14T19:33:24Z
    audio: Nandini
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.375
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.344
      additional property: Energy
        type: PropertyValue
        value: 0.961
      additional property: Speechiness
        type: PropertyValue
        value: 0.145
      additional property: Acousticness
        type: PropertyValue
        value: 0.112
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.501
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Mon Harini
album: Sadher Gatar
album: Dulali

Valence (Positivity)
type: PropertyValue
value: 0.683

Loudness (dB)
type: PropertyValue
value: -0.278

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Minor

Mon Harini
type: MusicAlbum
date published: 2025-03-15

Sadher Gatar
type: MusicAlbum
date published: 2025-09-01

Dulali
type: MusicAlbum
date published: 2025-09-25