1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa3765e90cfa645823f565407746c76dd6dceec7befb09d89f862115acddf0a4f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5aea636f-6276-4e74-90c4-b2c7c247d522.json and https://artists.proofprofile.net/proofs/artist/5aea636f-6276-4e74-90c4-b2c7c247d522.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 → block OTSBitcoinBlock must exist at that height 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 0x24787c7dc2c823857d233a7bf4bc93073354ec51b40f58c328cbf79b294c1b19. 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/JPVP00609305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc10d3cbcf4f6d236c656b6b9c45156275a7f23107148b21fbd60af29cb35446. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JPVP00609324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f435ba88b346cd38fd2f8d42d32581e928c3c239cd5f06d180b740bdd4a0dc3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPVP00609343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f493b165938aa110b59be679aa237efc80fdb2ef59f1a9902fc53d2581bf0b7. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPVP00615001.
TVアニメ「ニル・アドミラリの天秤」 オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3a0bee49d84ca13178e1296793ce385d371e71f612fd0b827d11713d85e482. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:10:23Z), 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/JPPC01800764.
TV Anime "Nil Admirari no Tenbin" Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451fb3eeab10cabd24c12c0e18d7135ae8913e6c3f6d26643977e0ed59e80a45. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPPC01800778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a163611cdad89343501f3d559b58694abe3e206fb8268c5d59361e76623c087. 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/JPPC01800779.
NHK土曜ドラマ「一橋桐子の犯罪日記」オリジナルサウンドトラック
絶望劇伴撰集(「さよなら絶望先生」オリジナルサウンドトラック)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6946c06032963f8dd95295e37ffb701bcb1c9faa43a1948fb150e89ad9ef0b4e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPKI00708643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca4c92e87dfbb127b4135488de5eace72ffe02c670060c8a193a0292e3ba9e0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPKI00708645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc952def21dcb0796f135abb8ad4c683914c8fc21bd229c49917c0c207c7b48f5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPKI00708647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39535244b5379ee359f5f4e2a934ea84a6477d3aae293c99f950b4fd851f4fbd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPKI00708648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedacabd8b5ffc28226e202a63a7484b29b7cb48c15083df2e352b40a144c3f97. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPKI00708649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8023451c2e05a2fcf6d66779ed7a54aa477071eb66a5e5a3287a721e1094bde. 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/JPKI00708651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5746c8e9ad38af5a588246a1e058286babcddce5c7219cf984601e8c4c4727e4. 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/JPKI00708652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5865546a44675d0fd281c0f9a4107fb4c321d68af9e4d7d762826fd7a0cbb651. 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/JPKI00708656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2536a90997c47e52af36edaa5435fa31667b35cbc6d3964b7914b655ae89600. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPKI00708664.