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 0xf877f549fa6152dc9574daf5eca365f7066284c5308671b1852127170d29229b. 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/073a7ac5-869d-48e3-b930-6f2df1010272.json and https://artists.proofprofile.net/proofs/artist/073a7ac5-869d-48e3-b930-6f2df1010272.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
天命 (游戏《剑与远征》国风版本主题曲)
天命 - 游戏《剑与远征》国风版本主题曲
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 0xf02bfaaadf2c76095ad90834ef2092136a28eec55464a6f4a6732fb704078a2b. 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/FR10S2327832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15624df2aa7b56060635b83480c7a118f88e8a07f516936a16fa8b7f4dcb74b0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CNZ882301140.
八戒（電影《八戒之天蓬下界》先導主題曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0681b584cae75f74b83356dff67fd5025be7c2a01cdfe0898deee995389b0f. 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/CNZ882301132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea50e482a05c3d084169c680cd9fc395bb61ef20b54dc0c7a995446f696effd. 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/CNZ882301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6818243c7667bd7e4fc3669c3c0c4c358fd421296afd7a14554facef3db720. 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/CNZ882301138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fac2136d72264e98c60dc9d442f962b6199dc685301ba7851b9ddd93560f3ce. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CNZ172100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f34a9e57c91fac8e3641c2e7b130986421e6737fcc01fed65a79b6b02e4cbc0. 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/HKC371700550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2b75144042e6f2c05eb5858ce79697863dec3125d89c1d342dff1042f708ee. 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/HKC371700553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4682482957d4a8c3069683bbce32b4a4fd41e0702502a639e2dcb751cd2e435f. 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/HKC371700554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a99095340911c22100138c62abee93fd54e2c71c227832bf89864a28f2f392a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/HKC371700561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4259d8091d70a101c10501a7360e62d9a52ab80e707150b3ef898170fbe83d. 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/HKD012303247.
至锋 (《小冰冰传奇》剑圣烛渊伏龙皮肤主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0681b584cae75f74b83356dff67fd5025be7c2a01cdfe0898deee995389b0f. 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/CNZ882301132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fdc27984fb22375098f5c381f2a7849aef48af08797fd4c76060016057e9f1. 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/TWU712301320.
快意江湖 (2022快手直播年度盛典原创曲-江湖篇)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159238a66b9a86206234a8a84915e26a151ede0e76243fccd5e8fd668e5e03a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CNZ172100136.
天地行 (游戏《凡人修仙传 魔道争锋篇》 片头曲)
天地行 - 游戏《凡人修仙传 魔道争锋篇》 片头曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204a1ba7ee0b895a3dae015bb00b4cf00d393bc747a8393cb5678346bdee0124. 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/FRX282207365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7542b315e9396780a30bf1b5894cfbcea04b0d67377a22b7376fc652eeafa34. 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/FRX282137681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d12c226a919afcde0a7152ef3ec028bb8cf10097f127ee9d6f36ad6d16b38c. 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/HKG732013212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136ff401ef4edc892fbdbcc23611d244832453dc521bcbd9410d3a0c9137a21e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CNZ171900399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726aea140b2be9ddfd4730c4287ad5d55a8300361cca68cca5b1d759850da4b3. 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/CNZ171900261.