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 0x430578639ad280af11f80a238fb8f5af4476db88c8ec71beca67249c61769b73. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3ddfdae-2e24-411d-adf7-c0fd29fd6039.json and https://artists.proofprofile.net/proofs/artist/e3ddfdae-2e24-411d-adf7-c0fd29fd6039.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ＦＩＲＳＴ ＣＬＡＳＳ ＳＯＵＮＤＳ ＦＥＡＴ．ＲＹＯＴＡ ＮＯＺＡＫＩ［Ｊａｚｚｔｒｏｎｉｋ］
GUNDAM Build Real Original Motion Picture Soundtrack
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 0x37dd5407dc76be24876749a910fa536040a266abf7c5a7f6d9da2f1a03886469. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPG532102901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43f1d5ab9fbe711364532c96a48a2b38efa5085c0339b84c81e0cce606e1604. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/JPG532102902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd696c1cf0aadd9b1a3f7e18e6989eb652a95e2a76a73dad9aae867c65746e2. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/JPG532102903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd6e0de287afe1f10f619b972292b829b1c69a8eab3b21b037da92fef032246. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG532102904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b431a4f70eb65b9ae7d4b1730d9169f2085846c3965aed18909402f2436ab9. 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/JPG532102905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab3d5acd61801cdffb7d3ede34fb3cecc85ba8010ff90d612ba1e940d1cd4af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG532102906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1dbdf23160598d66e8963869b024356a03d3d1f0f893466f8eb256dc01d2bf. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPG532102907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca34e94695c44a76ab8315351e49c2d4f2813388e7865d2ab9b266de2f0510a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPG532102908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d52962c26cb956383606986b0aad33a38ecafe47d0ada1050ef464e1b165ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG532102909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dd5407dc76be24876749a910fa536040a266abf7c5a7f6d9da2f1a03886469. 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/JPG532102901.
機動戦士ガンダム U.C. ENGAGE Original Soundtrack 2
Mobile Suit Gundam U.C. Engage Original Motion Picture Soundtrack 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df88bd604f3ffe1e836767d3c99f5b6fa6a6ce1481989644b539341205dda3d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPI102202764.
TBS系 火曜ドラマ「西園寺さんは家事をしない」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecac1bb987878410f3d20e30b66058213bba977c3415c49561c06ff89275e72. 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/JPL802441013.
こんなところで裏切り飯～オリジナルサウンドトラック
映画「私にふさわしいホテル」オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1194c7399bb16fa507b9e9b2633e8703148ca885af1edb9219e3a4f65cc6b92. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPH800100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4850661c86fb01534a080f1fe3ff8dddd2448d5a9e2bc89d85e249a93778228e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPES09904141.