埼玉県／川越奏和奏友会吹奏楽団
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followers: 36
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  date published: 2026-06-17T08:11:48Z
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track: 課題曲 V.マーチ「列車で行こう」
track: 追想～ある遠い日の～

課題曲 V.マーチ「列車で行こう」
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by artist: 埼玉県／川越奏和奏友会吹奏楽団
in album: 全日本吹奏楽2003金賞団体の競演 一般の部
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  date published: 2013-07-02
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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  date published: 2026-07-08T03:22:41Z
audio: 課題曲 V.マーチ「列車で行こう」
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追想～ある遠い日の～
type: MusicRecording
duration: PT5M30S
duration ms: 330541
explicit: false
by artist: 埼玉県／川越奏和奏友会吹奏楽団
in album: 全日本吹奏楽2002金賞団体の競演 職場の部II・一般の部
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  date published: 2013-07-02
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dac83ee47668f3a301df7234189b1f2330c654e4d99f37907e434372aedb03. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPVI00243480.
  date published: 2026-07-30T07:28:30Z
audio: 追想～ある遠い日の～
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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 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