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 0x979909f6fc29aa55b4e568c45773a82631ef0309834380cad9b0aee6896e332c. 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/60c020b5-d5e0-48e5-98f2-11e907da8fa4.json and https://artists.proofprofile.net/proofs/artist/60c020b5-d5e0-48e5-98f2-11e907da8fa4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c36256e9673dde3392b80b8b39b1da1377b90c3cc6d81c9c5cffb1a6e330a90. 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/CNZ842200310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe60046e39c457910fb885e79cc004de8da03f1cbe0ee9f0713f3cea1f2f31c. 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/CNZ842200312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbfd0d0ef25f7438d5329f44ad8d9c64244106f391feb9663fb5023a7a7b316. 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/CNZ842200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfc2fd17d15186d85c38d80e161bd294da3210eeb80c349cc0fe9b20d8f72e1. 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/CNZ842200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb0748c2e8be7617d6808b7e0be369ab9149ffa45cdf6f3f0e37386a72b9541. 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/CNZ842200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbe80d35f1fbdd35ca167fd464313db37c6aeec8ae957a3e83341aa4e0187f8. 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/CNZ842200308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66efc6540de09906175aaf126c54cfdbec793341e34d383a91a0e5fc0a6d93de. 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/CNZ842200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87db27f56c140641eb346980a6cfd6dce793c2ad235f8d7b77edd1dbcaa5437f. 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/CNZ842200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f12388aa1d3b4254c38dea27f56975e0f83e0ccaadd524faf32c4e015b51443. 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/CNZ842200311.
我還記得那天 (影視劇《蒼蘭訣》插曲) [伴奏版]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369c42de78b942204f86d5ece0a90a9537f87e19736358f8610de0f8e1412099. 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/CNZ842200313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2706fef7bf88cfeedddc20acf7d050ee237dbc6c0241ab42d66f10af7f9769f7. 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/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 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/TWU712402812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11189a3d046379d82b32dcfc2f47f7abc43f506efec486d49c82765fee7a9717. 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/TWU712402813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fa58f5ed8b926d73b9c2c2892df7f13ab6ee549c65ca4f3d479ce6b8530a2d. 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/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 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/TWU712402816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278e57d240e5c97d63944bb2c15f421b2f577f6dc9f85719bfd46dd4d07f5369. 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/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 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/TWU712402819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851fa4ef2ade23ac603ffd7d4e9ae8a34bec8f8c9ef75e3cca84bbe7fa9e791a. 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/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 0x86a762ce38138cc7b0ed3de15cc07f915f2a4cf6cb309d00a7f18b05e8bc0e54. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG732447274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406a8a018ddd244aa978c3b1ffcbe3e080ab23487208cec09c51f493e90e4f17. 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/HKG732139206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67233f8b579a2aee93d291f302695a298c4ff425eba545ee0f03e584eb33fb55. 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/TWU712004409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d460c086d2e02a26996bd04555dc421280f016c6c72e9bb01f743c22defcea. 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/TWU712004407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923310edc0ec47f0b163bcb2d9c537e4791b8c65341f7f500792ea458f835002. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/TWU712004408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7708dbd5171748e9a9c30de322abc2d2d935e3564121569dceb7b7240c7fdc2d. 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/CNZ632100719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0599ee8c53d441bc3218df9d37d65927cc9af162e5eef82a3c2321e4eadb6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CNZ632100712.