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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f473d404f4a3866f7f11531d09e5b79a106ff693466d99fad4a73715fd346e4. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7a9e6a5-df62-4c4b-8a4e-b479f6bf4864.json and https://artists.proofprofile.net/proofs/artist/d7a9e6a5-df62-4c4b-8a4e-b479f6bf4864.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
J-POP for JAZZ Piano＆Lounge BEST HITS SELECTION 50
初めてのJAZZ ～J-POPのカヴァーから聴いてみよう～
カフェやホテルラウンジで聞きたいJAZZ
ハロウィン・ジャズ・パラダイス
カフェ・クリスマス JAZZピアノ＆ラウンジ BEST20
セツナJAZZ ～冬に聴きたい泣けるラブソングス～
目黒のカフェから ～冬に聴きたい名曲たち～
冬のクラシック ベスト・セレクション Sweet Jazz Piano Covers
WINTER CAFE JAZZ HIT SONGS ～冬の寒さに染みわたるカフェ・ミュージック～
冬に必ず聴きたくなる名曲集～ BEST LOVE SONG COLLECTION～
美容院・ヘアサロンで流れるジャズピアノ
カフェ気分で過ごすクリスマス・タイム
癒しのカフェ・ピアノ ～春のゆったりJAZZ～
The Real Cafe ～best Japanese Song all time～
秋に聴きたい邦楽ヒッツ ～心に残る暖かい音色～
冬カフェ クリスマス ラウンジ ジャズ
カフェで流れるクリスマスベスト30 in 2015
究極のラブソングス ジャズセレクション
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649b6dd0bec7aa9ed5f8b65e3c53d580bfc4c4d1b35c7e999902eddc5398dc32. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN351500682 — a six-check JSON result.
タイム・トゥ・セイ・グッバイ（コン・テ・パルティロ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610e1cafc17360e159c3ba5ffc9be99f29d76b5d82a1feade702ca55e1d2bf82. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN351500683 — a six-check JSON result.
カフェで流れるヒットランキング2015
カフェで流れるSAKURA MELODIES 20 BEST SPRING JAZZ COVERS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5269646eb330ad74eb520d84a9602f3f0869e614b06c8a6fa97c0de2272a7759. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN351503313 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3c39bf8b7102e0d58232e128667e938aeb15f68b0ff39052200ca3f0b74aa0. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN351503323 — a six-check JSON result.
ほのぼのカフェ ～スイートホームジャズカバー～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cfc49cc59aca5e1c9913bdce9fdfaebbd7de5b3f3361f577cb6f66b933457d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN351503315 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b8bbb3d9d1976e844d308f613f31c7c782d18bd70aa52f7b64dc36e941f722. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN351503317 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e7583313cf41ad8b9832d44bb5df510ff05cf3cfa2e57dda915ebaa415cc7f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN351503318 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290bd30b9dc3be650fa00d443dd77a59d4064ba6925fe91faad2e90d0a61c36d. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN351503325 — a six-check JSON result.
Perfect Cafe Jazz Collection ～究極のカフェソング～
DRIVE LOVER ～SMOOTH SONG BEST JAZZ COVER～
カフェで楽しむ読書タイム～軽やかなジャズを聴きながら～
オフィスで聴きたい春のジャズBGM BEST30 ～ストレスのない職場環境のために
カフェで流れるジャズピアノ 2016上半期BEST50
至福のカフェジャズ90min ～春のスペシャルソングコレクション～
ホテルで流れる極上ラウンジジャズ～やすらぎ空間をあなたに～
ジャズで聴く名曲たち～カフェジャズの極み～
桜の季節に聴きたいカフェミュージック BEST30
ジャズが聞こえる散歩道～春の木漏れ日とともに～
カフェで流れるジャズピアノ BEST40 vol.3 ～Piano meets Lounge～
Happily Ever After ～BEST Wedding Jazz Covers～
雨のカフェで聴くしっとりジャズ
お仕事JAZZ～軽快なジャズで効率アップ～
夏の訪れを感じるジャズ～軽快なアレンジに乗せて～
パーフェクト・サマージャズ ～ドライブ、BBQ、パーティー、海の完全版 BEST COVERS～
読書と楽しむ音楽～ジャズピアノの音色を聴きながら～
真夏の祭典・夏を感じるカフェボッサ
静かなリゾートで聴く大人のジャズカバー 30
効率アップジャズ ～軽快ジャズカバー～
秋に聴く恋を感じる名曲たち～ジャズカバーにのせて～
Ballade in the Rain ～少し切ない20のCafe Jazz Covers～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1ab223b9dc7375b960868c0912d7a82ea2c83c1aa856b701be42a0539ec0cb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN351601112 — a six-check JSON result.
秋の先取りカフェタイム ～スイーツを楽しみながら～
裏路地ジャズ ～哀愁の名曲たちをジャズカバー～
冬カフェミュージック ～冬の匂いを感じて～
ジャズ イルミネーション ～光輝く音色とともに～
マスターピース オブ クリスマス ベスト50 ～ジャズカバーセレクション～
逃げ恥クリスマス ～ひとりぼっちも二人ぼっちもクリスマスに流したいカフェジャズ～
Spring in the Garden ～春の風に誘われて…Cafe Jazz Covers Best 20～
オトナJAZZ〜ドラマティックな夜のカフェで〜
Korean Drama Theme Songs -The Music Box- (International Version)