Cape of good hope
type: MusicGroup
genre: japanese indie
description: thumb|upright=1.6|right|The Cape of Good Hope looking westward, from the coastal cliffs above Cape Point, overlooking Dias beach The Cape of Good Hope ( ; ) is a rocky headland on the Atlantic coast
popularity: 3
followers: 194
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d047ed8ac885e4456daa742dd5ce45feac72e16c167bf742223ef972702b9b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c76fd52f-9949-4aef-a5da-b9008a2901d5.json and https://artists.proofprofile.net/proofs/artist/c76fd52f-9949-4aef-a5da-b9008a2901d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
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    duration: PT4M53S
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    by artist: Cape of good hope
    in album: Vortex
      type: MusicAlbum
      date published: 2025-03-10
    genre: japanese indie
    isrc code: JPG102500443
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    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778d74a48c56d10a2b5256e0aed816f172dc10a5dd60337f34ada8101f776a4d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPG102500443.
      date published: 2026-07-18T19:27:02Z
    audio: Vortex
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Danceability
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      additional property: Loudness (dB)
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      additional property: Key Name
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