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 0x6eb902a66bbc1bef756b02eaf04a1128ff61a5ac359c8eae49de364aed719d27. 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/4177214e-2f36-4d1b-8e70-d6511a5080d6.json and https://artists.proofprofile.net/proofs/artist/4177214e-2f36-4d1b-8e70-d6511a5080d6.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 0xfcb025230a1d369c871359640b535662d9f4fdb4cb91e66d77edde27ed13d1e1. 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/CNZ632400914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10201a8a60df0d430f5542feb93b33551c6af5737ddba9cb4e58c9e5f71b1f38. 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/CNZ632400918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50ff6d31cb11b1550c15a2a6df6ee659a8cee8bb0fb94407f69adeca95a2508. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732140819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ef0405b954a71657c1e7ed8bd02d5d292400b16679373e198aec0dfbceb28d. 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/CNZ842300479.
雪季（《宁安如梦》影视剧人物曲） - 伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92432bfc428a999679ecc80b8bcab0af355f4bd9b9f14afd8658a49931a0d555. 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/CNZ842300471.
心動 - 電視劇《一生一世》時宜人物主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc84fca96832a71e78729160a0cd336fd1e4622cfc9406d807a175d0b7e97ca9. 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/TWC612153305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f25b1aed9f1ad4ed15b8d2b9cb5b60970c1018400d34f9008768781d6956b5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HKG732155859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398dcc99dfa339cdec94823b9694895327ccb6744f98ae5e0581e960d453a3bc. 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/CNZ842500006.
不要想念（《白月梵星》影视剧插曲） - 和声伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf771a21f588eea001848a0b9bcf4490b3536f3f35bc08582e480ab55f95d2572. 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/CNZ842500005.
心动（电视剧《一生一世》时宜人物主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc84fca96832a71e78729160a0cd336fd1e4622cfc9406d807a175d0b7e97ca9. 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/TWC612153305.
心动（电视剧《一生一世》时宜人物主题曲） - 伴奏版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8dd4de27c173d856e73c2947ffb7f14382b1cdbbe1cde2f66d4699d564fd18. 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/TWC612153306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3be6d78eeb9d94a65b58ba13ab084e4492484e5d4d537edf85c84a6e674149. 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/SE6XY2597749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bbac9ef65ff70221dc04d40ae8b09bafb5c4509a0d00980fba5421c340ec4b. 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/SE6XY2597750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7340862af839e39fedd25db16aea3201c2f7f42b0a3ee29ae51fdd35eaf93973. 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/SE6XY2597751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf245cd4b39e78ae00254e2c4f89f14c79950b7da8fa9302644162dae219c11. 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/TWU712505947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfea9872ee7b5971936a7d2528f80fe9b3d64cda7a88b39b529d68c7f97bf514. 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/TWU712505954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3f7c5bdec6712c6492a9a20d9d2941ed530653a256ab5e3de880a437e848e1. 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/TWU712505955.