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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387caa4746f8b8c64683e5c4aa3ade1a546b42c22ba2964abb1b3fd1583adb37. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4a2fe46-b032-4f94-84b7-58c21e9989f0.json and https://artists.proofprofile.net/proofs/artist/d4a2fe46-b032-4f94-84b7-58c21e9989f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
新 ピアノのための東方小品集 第2集
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ef23e0e11cfbd2436c0e307a3fc2a6f13b7bbda1b1b27502da617ffc6eb327. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW561904604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430b8ff7523c7e200be35bbc4b19171ee6d305b2c0a0b574b254da97b554044b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW561904607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6481db47c38f0269417cb5440d967eb0abb15988d99a0a9b13f8d3f1fdbf869. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPW561904611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81abcfacb169e604528ef21a55584a361aa66558b401c83cbab2436eede37c15. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPW561904602.
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
新 ピアノのための東方小品集 第1集
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41326ef9e8457ab7a0d9d0bea6ca45be924840e9645d2ec45e3d9a1394518d17. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW561903639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37603b7b2cb0d105f8be5f7fb1ab4ffc36db213dbeef0db410b44677704f10b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW561903642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4276b2f9fb02346aedaf8a8a918e903f7d22267ef265523d46973453f3e2d2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPW561903636.
ピアノソナタ第6番嬰へ短調 Op.8《暗黒能楽》第1楽章 アレグロ・ヴィヴァーチェ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871999446cf23f424cebfecd20144f403a9ec29f87ae3b441084d2db7e2cc9ec. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/JPW561903643.
ピアノソナタ第6番嬰へ短調 Op.8《暗黒能楽》第2楽章 アダージョ・エスプレッシーヴォ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda81915b156a515040f433da53e0326684412031a1c3916de60b45ba19f91c2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPW561903644.
ピアノソナタ第6番嬰へ短調 Op.8《暗黒能楽》第4楽章 ロンド（アレグロ・アジタート）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc268c64e9b1aac09f1c3929d086cca1a6673b4f05cc719185972fc6d9f7bf774. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPW561903646.
輝針城の主題による2つのピアノソナタ Op.5
ピアノソナタ第4番へ短調 Op.5-1 第2楽章 ラルゴ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215d337caf5328d1a003c49d31031b9f796541628da0471ca96df441c32185f3. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/JPW561903625.
ピアノソナタ第5番ロ短調 Op.5-2 第2楽章 アダージョ・カンタービレ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e000fd86c9987f1cd6d69d7d65deb05cdb6d82a45623f0150d2671195b23918. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/JPW561903628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478656b2e56b7cc80d37cd9a5654b6c802010bfce34a91a758cedb2bff3aee75. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW561903606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3264a0eb5f1a2d63de333c18706ba1548094f928a18ddb67da317c9a2d1c0471. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/JPW561903609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2602bb0bb3e45b4d3b7b2b4234591a6cf13d174794da15857823e74abf9d512. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW561903585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c8b46d5e4d361d7c51b4b45684bb732c795d1f44ba0b0d38f6736612160d8a. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/JPW561903584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d6fcf1f9ee69ba42aa8263d2576c508866710e9bb51f90fb51494e639aec0c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPW561903586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9858a737678ae9ce500771710272e86e7fa4f8ee4e7de066e19691588f0b9fa. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/JPW561903587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21b0f4149eb65cf06f7d483db1065c06bc7d13bf1d2b638a814f75231f7a515. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/JPW561903594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a5fd2875fe093431bad782d20cdf4f98a62cce88d1323f24c3b0ab66f04725. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW561903577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa283efc7554ab738a61d41548175a64ec71464a3e47f1f3b925d17fd86703863. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW561903578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1d419349d2039ec9039a43abefc5876329727919c0b3106dc0c4a5c054c5d8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPW561903582.
【Piano Piece for 2 Pianos】 - ネイティブフェイス -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c19aef90af02dbab83d6c747a07229bc3be4cb2d17546d939ad5f49d7a74cc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW561903583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdffca12aa4945e69d6da224cb26a992df771e5c5677d2ea5a99dd657536197. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/JPW561903575.