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 0x12870969149e2166b5b13e7cd821724e9491bd0274812b7a375c04d6d0d08bf8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9b47782-d873-4ece-9710-147dc9f3fdbe.json and https://artists.proofprofile.net/proofs/artist/f9b47782-d873-4ece-9710-147dc9f3fdbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x11da82161377507ccc888032cb9accd7cb77e8968a533652cecf41f20b423086. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/JPQ701800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42eb9bf4a683ee954d97dbeb87b6ac69f99136e4b1a01214cdaad7233a52f0b1. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/JPQ701800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075a7c280bf77a5fe599554b327dfd9e9e050f2be5e4982eb0a36b4b2fb9c419. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPQ701800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45440df9b91e5925d0b39708a2b0717e75bb40c592e32ace01b7f2ce45003a2b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPQ701800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005f463d778f970a45f904fb7cf95deeb3ccbafb5caf25eab3302d76ece9218b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPQ701900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc5b855c34b30faf91f0227d7280c1580bd0e5943448277bd67a5d820f89980. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/JPQ701900020.
マイ・フェイバリット・シングス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ee9687362497f08d13599672c8a81881a091e26f7864a6e35218af057417a3. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/JPQ701900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb10ede5e8d61d26b0dd11128b7b7ad76fb8ba3fe6add973ed8d9509c25d76b5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/JPQ701900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f48412a2300f846df760bb2a4f36e8a7647102149dc55bf3f380d0b648dccc6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPQ701900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bb55cae9360ef5670822cd5da41a0374e1fe18ccf945e38a078dee956c57d0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPQ701900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87477a6e60318300bc4ea65604cd68b6b4015b372fa46261f6d3db42ff50603. 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/JPQ701900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2cb293e02bbae0976c3fa9fd0d611631162fd7f1978f7a19ec96f6e63de658. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPQ701900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a582a889c24910980df71b0910e1cde58b4201b388d3e74bc363211d0533fe. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/JPQ701900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc2174a2e882c8e590b4891f110bb98cb960092d695d5ee7d1e399bd23aa218. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPQ701900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9b3effc5aa668b95eb2a0382f298cf3f01cad45ddb1a91a36f0bf56575e8b4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPQ701900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106f6b116e77606630a18990c60d7cccb747ce8ff02f8ec49a751b8386b8bee0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPQ701900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a4130e98fa48aaefbca065d3db6c07dd4cc4fc64c0ee21f73ac426a124499f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPQ701900033.
ピースフル・ピアノ - Ab Ovo/Sleeping Lotus [ユップ・ベヴィン・カバー]
ピースフル・ピアノ - Twilight/Whisper Of The Heart
ピースフル・ピアノ - 風のとおり道/いのちの名前 [ジブリ・カバー]
ピースフル・ピアノ - Right Here Waiting/I Can't Make You Love Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ed42e787f5ffaa07671f14041245aca198919a5e37ba27f2d3456b1072599e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPQ702200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ccf4c12431b0a2069167c83046443d11f4a1c291fc5f78fa0b78fe94240988. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPQ702200310.
いのちの名前～「千と千尋の神隠し」より [ジブリ・カバー]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4045641a90fb7fb99f2153df60278389abcd09312eb04b02b21681a6da4750. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPQ702200311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1d5ab0fc03b4f56ca2de8425cc6230db9e7a7943c6ddda10b73da0982f0531. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPQ702200315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1492b964612101ce13094a431cb35568b27af5b75862b0e39bcbd316f84c13. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/JPQ702200317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190566c8f5ec9d71c78e83fe7fc2867eea6ad2c36ef905830af206e14d7d890a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPQ702200319.
ウィスパリング・ピアノⅠ - A Time For Us / Interstellar
ウィスパリング・ピアノⅡ - Playing Love / Theme From Schindler's List
ウィスパリング・ピアノⅢ - Scarborough Fair / The Parting Glass
ウィスパリング・ピアノⅣ - 悲しみの鐘の音 / 南天のプレアデス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02fb8e77f3264835f615341fb973d0e3ec3a6681f07d9607bf8262d3f0a5d85. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPQ702400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2488e1ea2180c99400f4c70f2ec6096f9ec7fb4212d43212366926bf42eac75d. 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/JPQ702400111.
ウィスパリング・ピアノⅤ - 大いなる愛 / あなたらしくいて
ウィスパリング・ピアノⅥ - 大地の恵み / 全ては静けさの中に