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 0xd5e5592f4d775c475c4f44cbf7b081bb2691f5fda0c12e4dde657f8b5d2d2ea4. 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/aa918abd-1964-49fa-ba0c-a25877792fb1.json and https://artists.proofprofile.net/proofs/artist/aa918abd-1964-49fa-ba0c-a25877792fb1.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 0xd8c56756d81aea1c6f715a5402d0dcdf936a2a8b7651d86e99bef00276c468e6. 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/TWD251950887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2706fef7bf88cfeedddc20acf7d050ee237dbc6c0241ab42d66f10af7f9769f7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWU712402807.
活下去愛下去 (影視劇《墨雨雲間》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d312144bced90a05d9575342d970d2b0bc981bc1ca69fc1531a75da4ad8139. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWU712402808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2695e2b8b2da49dfd35242fc73a2f210ef1eb20addd47618590c5b78a5fb0f75. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWU712402809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bbe830f1ca0c357247ea4fb8ac28fa9d9a70b3c2b6e9b5982643347ed126c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWU712402810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a69801611c34e2958b29e583bdd7772579f121feb2592b186b6e48c743c3434. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWU712402811.
芳菲落盡梨花白 (影視劇《墨雨雲間》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcb7ea4a1985fc3ba7971677afa0d97c1176bea96ff17084f5e9a213ee3e55a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWU712402812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11189a3d046379d82b32dcfc2f47f7abc43f506efec486d49c82765fee7a9717. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWU712402813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fa58f5ed8b926d73b9c2c2892df7f13ab6ee549c65ca4f3d479ce6b8530a2d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWU712402814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cef001cf3434b53c6496538a0841bc3fdd4ec5055f3ef8790723fe891d454f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TWU712402815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7b4529ed3b7360c2245d1be6d26abc7fd12ba2b88ee8320f4e345fb18a9ac4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TWU712402816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278e57d240e5c97d63944bb2c15f421b2f577f6dc9f85719bfd46dd4d07f5369. 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/TWU712402817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cb0a8856e72663f34520026a1d3be801f56cfe8622fcbceddd0bbd1f7f7237. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TWU712402818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61df0045383075bdac0e5fd9ef710bef981a8069b808d9672dd0d7d87e70dfe5. 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/TWU712402819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851fa4ef2ade23ac603ffd7d4e9ae8a34bec8f8c9ef75e3cca84bbe7fa9e791a. 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/TWU712402820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365a358e2abe2a352d50f36c13b68609ba0563570cb757de662c49310257035d. 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/TWU712402821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b144f3479a95741fd5b40f5aed0cca7388c3c3a7145ee79f3fe6e4ee957f073. 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/TWU712402822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18eda5b0479f8ce9e444f9fcff979119038e4288fb6f59791a32f0043879132. 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/TWDL72307054.
生活總該迎著光亮 (電視劇《喬家的兒女》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab4d4b266a29f86fc82a29eae3db1f5582681d0886f945add8cfab61abcf601. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWU712103145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1bf755ff2895ea0e5dad40f7521136370d736c1359c25dc34f0dc13a9ba50d. 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/TWU712103146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6647429e9cffb2a4010cb72419f190481b42f9eae4ef68eac9fbecbbe1d222c7. 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/TWU712103147.
葉傾君(吉他版) 電視劇《鳳唳九天》宣傳曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefafac202c5b3a2db2e3c49132304b8760227522df97e52d63e5bc66bf06f6b3. 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/TWD252050976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a5217b1893ef4bb7e057927097e969dfb8e9a06135a2bff816bb38271fc84f. 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/TWD251950294.