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 0xb4c8ccb313c610faed5991b835cf35661f8eca223bacd11c3b34f2867c2ebae5. 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/9afa8743-39f9-428a-851c-5f4e49d5d38d.json and https://artists.proofprofile.net/proofs/artist/9afa8743-39f9-428a-851c-5f4e49d5d38d.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 0xf087983368848c59e74d1684221d64c8b629d0be7412b3c955f3f628b507992a. 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/TWU712001601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c38cc8be8e6f4ef8a049b2c19dde2de555d151f572c7c52c728b314af0779a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TWU712001523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd855f8424685b5b0bd4cb5dccee10aa373995a1cb12b4cf0571d17041545360c. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/TWU712001714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10773492b308638d82ec369164ab78ef00b4ae188b5e36ea1385f193751c91e. 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/TWU712001716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e2c2c751b7362508c228a8741d706fa6219edbaeedb9d2551b6ee611078e3. 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/FRX282172415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479336df6de7f83e22e97d34cdaa533eaebc7e586ac14bf396716b802849cedb. 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/FRX282172416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bc8e96b5863edecf3039fd6536e45e85b3a3721281f4bc9581e4aa9d5ec97a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX282172417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6827f07934b73bd59955f841ebfd9acb4661123919d7f6729444c4efc0cf9. 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/FRX282172418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6adb26d9bf8ff117aece28caeb88c8942b5a8374ed659bc5e091deee1c25453. 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/FRX282172419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a50e8712a26eb309827966888ffff1bc604a687a2651837d847ce1b64a571c. 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/FRX282172420.
沒那麼難 (電視劇《全世界最好的你》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e6a8eebc632276ef90e130812905f67818bd27aa6d35aec18488fbea2a529d. 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/CNZ482000002.
讓青春不枉 (電視劇《全世界最好的你》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3a193407cefb5b2a0234370c90afe566d6a127ee23a07a5e7693d163c6b812. 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/CNZ482000011.
陪你漫長時光 (電視劇《全世界最好的你》原聲配樂)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5763d1034ce0a068aac9a4483fef351b37d2daf54ecf2b2b1952c37d85b2fb. 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/CNZ482000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3f419f311e06fda4b3661dd8eaddf08cdac87ba9dfe4bc568a64483d04681f. 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/CNE222001495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc905c6092187bafcf9577e3dc66dd73127010a6d20d2d634e7aa613c50cc71cc. 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/CNE222001503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ee1b0f2903ce46202732290b6bcc22eef78c0a6625074218b81f4c58015610. 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/CNE222001516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3fdbd0f96eabc50ee025d319a7908df6873119140c442eac8b96a39ded61f9. 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/CNE222001489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dd6f602bf15f2ac6104cd96741ffbb5081f5b28abb234aa2b9f91308401007. 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/CNE222001519.
我們之間, 我們之外 (影視劇《司藤》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6116149b01e6538581e76cd1d8bc1496485f43bb52b80482486a30689d8a7c. 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/CNE222001524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27522d3fd8bef1b71160cf7b1536bf605f4680529ea962e6dc813cc24a68bce8. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:35:03Z), 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/CNZ642300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51cf718282e01dedf4219978cc70560a627e7a871cc372c089fb0aebc48ed4f. 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/CNZ642200099.
不懂唱情歌 (網路劇《我的巴比倫戀人》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79633195bbbe7b4164ffa66e3b9514e5497341330644935a9acb845e1bd3efe5. 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/HKG732116705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a9d73d2eecf3b52f2e9d63a6682aca79388a15d4e32e66e79bea580d2fc486. 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/TWA472096022.
还不想长大（《我的奇怪朋友》影视剧片头曲）
朋友多好 電視劇《誰說我結不了婚》插曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc0fd1572feca69c00236cf6ce5b15153fc698921af9bab3797398d9197bd98. 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/FR96X1856630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972acd2bb86b0ac42514adf745d498db30831978a4c4445d22ce59636aa67253. 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/FR59R1891424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09cc30592608aba1eb54d75beb7285db143d141782b9c6e3a6d4a54f4befbff. 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/NLRD52135409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bfbefbb4133e6ad08ce55d731489f1fcc8a1c37a7cfe9974d257139bb2327b. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FRX281937420.