Eca
type: MusicGroup
description: ECA, Eca or Eça may refer to: Companies ECA International, a consulting firm ECA Records, a record label based in New York City Encana, a Canadian independent petroleum company that existed from 2
popularity: 3
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb1474aefeb574610ec894388875e819c2a3a236fd8c0d11671b4e5c0f1192b26
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953973
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953973
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2a4087e1-5e65-4c48-9a87-a9bf24ce7937.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2a4087e1-5e65-4c48-9a87-a9bf24ce7937.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2a4087e1-5e65-4c48-9a87-a9bf24ce7937
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:37:07Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1474aefeb574610ec894388875e819c2a3a236fd8c0d11671b4e5c0f1192b26. Chain 2 (Bitcoin): anchored in block 953973 (2026-06-16T16:37:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a4087e1-5e65-4c48-9a87-a9bf24ce7937.json and https://artists.proofprofile.net/proofs/artist/2a4087e1-5e65-4c48-9a87-a9bf24ce7937.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:37:07Z
album: Terakhir kali
  type: MusicAlbum
  date published: 2025-02-25
  track: Terakhir kali
    type: MusicRecording
    duration: PT1M3S
    duration ms: 63253
    explicit: false
    by artist: Eca
    in album: Terakhir kali
      type: MusicAlbum
      date published: 2025-02-25
    isrc code: GXD7V2585302
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T12:56:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x07c564ad1feacff5a1f6166c26cf93533626991264c6e9b6e4ba28eb9c9af1b9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXD7V2585302
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x07c564ad1feacff5a1f6166c26cf93533626991264c6e9b6e4ba28eb9c9af1b9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GXD7V2585302.
      date published: 2026-07-05T01:12:41Z
    audio: Terakhir kali
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.584
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.798
      additional property: Energy
        type: PropertyValue
        value: 0.901
      additional property: Speechiness
        type: PropertyValue
        value: 0.056
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.805
      additional property: Liveness
        type: PropertyValue
        value: 0.081
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.917
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.905
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Terbuang jauh
  type: MusicAlbum
  date published: 2025-02-25
album: Sang penakluk
  type: MusicAlbum
  date published: 2025-02-26
album: Tungul gereng
  type: MusicAlbum
  date published: 2025-04-13
album: Menemani bidadari diaurga
  type: MusicAlbum
  date published: 2025-04-13
album: Meteor menghujam vumi
  type: MusicAlbum
  date published: 2025-04-13