Cogan
type: MusicGroup
description: Cogan is a surname of Gaelic origin (not to be confused with the surname Kogan of Russian-Jewish origin). Notable people with the surname include: Alma Cogan (1932–1966), English singer Andrew Cogan,
popularity: 4
followers: 1157
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6eebb0b67ed7c5159df824d08bca55281448545ab22aad355067eb0f340d5a62
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/88913911-5831-4b2b-a117-3d4eb2e88d24.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/88913911-5831-4b2b-a117-3d4eb2e88d24.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/88913911-5831-4b2b-a117-3d4eb2e88d24
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin 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 0x6eebb0b67ed7c5159df824d08bca55281448545ab22aad355067eb0f340d5a62. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88913911-5831-4b2b-a117-3d4eb2e88d24.json and https://artists.proofprofile.net/proofs/artist/88913911-5831-4b2b-a117-3d4eb2e88d24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
album: Fifteen Days
  type: MusicAlbum
  date published: 2020-12-25
album: Don't Go
  type: MusicAlbum
  date published: 2021-04-02
album: Serene
  type: MusicAlbum
  date published: 2021-04-23
album: Crazy
  type: MusicAlbum
  date published: 2021-06-11
album: Another Day
  type: MusicAlbum
  date published: 2021-11-27
album: If You Love Me
  type: MusicAlbum
  date published: 2022-01-27
album: Forward
  type: MusicAlbum
  date published: 2022-04-01
album: Cycles
  type: MusicAlbum
  date published: 2022-06-17
album: Postcard
  type: MusicAlbum
  date published: 2022-08-26
album: Let Me Go
  type: MusicAlbum
  date published: 2022-12-16
  track: Let Me Go
    type: MusicRecording
    duration: PT2M42S
    duration ms: 162148
    explicit: false
    by artist: Cogan
    in album: Let Me Go
      type: MusicAlbum
      date published: 2022-12-16
    isrc code: QZTB22277065
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T19:44:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3df828a8dde96823855d0581d5bf946943c9c815e8541b1fb3128fb5731e1a58
    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/QZTB22277065
    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 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 0x3df828a8dde96823855d0581d5bf946943c9c815e8541b1fb3128fb5731e1a58. 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/QZTB22277065.
      date published: 2026-07-20T21:15:01Z
    audio: Let Me Go
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.896
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.587
      additional property: Energy
        type: PropertyValue
        value: 0.161
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.747
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.096
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.193
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.004
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: The Throne
  type: MusicAlbum
  date published: 2023-01-27
album: Lemon Face
  type: MusicAlbum
  date published: 2023-04-14
album: Over and Over Me
  type: MusicAlbum
  date published: 2023-05-26
album: Blurry
  type: MusicAlbum
  date published: 2023-06-10
album: Amiable She
  type: MusicAlbum
  date published: 2023-09-01
album: Fall I Fell For You
  type: MusicAlbum
  date published: 2023-11-17
album: The Frontier
  type: MusicAlbum
  date published: 2024-02-05
album: Nowhere (Over the City)
  type: MusicAlbum
  date published: 2024-04-26
album: Forever!
  type: MusicAlbum
  date published: 2024-06-07
album: All The Same
  type: MusicAlbum
  date published: 2024-12-27
album: Cinnamon
  type: MusicAlbum
  date published: 2025-01-10
album: Doesn't Make It Easy
  type: MusicAlbum
  date published: 2025-04-05
album: Anastrophe
  type: MusicAlbum
  date published: 2025-06-20
  track: Anastrophe
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226374
    explicit: false
    by artist: Cogan
    in album: Anastrophe
      type: MusicAlbum
      date published: 2025-06-20
    isrc code: QZTAX2502699
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Anastrophe
album: I Wasn't There
album: Livin' By Countin'

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-04T08:09:35+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x4b51c8fc484964d146ca02bc0700c3b59ac85b12495f6f0a1e6b6ba3b942c301

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956634

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956634

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2502699

OTSTimestamp
type: PropertyValue
value: 2026-07-04T10:04:33Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b51c8fc484964d146ca02bc0700c3b59ac85b12495f6f0a1e6b6ba3b942c301. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAX2502699.
date published: 2026-07-04T10:04:33Z

Anastrophe
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 159.935
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.445
additional property: Energy
  type: PropertyValue
  value: 0.39
additional property: Speechiness
  type: PropertyValue
  value: 0.027
additional property: Acousticness
  type: PropertyValue
  value: 0.473
additional property: Instrumentalness
  type: PropertyValue
  value: 0.135
additional property: Liveness
  type: PropertyValue
  value: 0.11
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.179
additional property: Loudness (dB)
  type: PropertyValue
  value: -10.535
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Minor

I Wasn't There
type: MusicAlbum
date published: 2025-07-23

Livin' By Countin'
type: MusicAlbum
date published: 2025-08-22