1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4cc81b38224636b225f23e3850e61e80acfd34798cede561c4be89fedb0553f6. Chain 2 (Bitcoin): anchored in block 953857 (2026-06-15T23:34:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01f23183-cb0a-45db-b9fb-a0f3b9b94b4b.json and https://artists.proofprofile.net/proofs/artist/01f23183-cb0a-45db-b9fb-a0f3b9b94b4b.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 → block OTSBitcoinBlock must exist at that height 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 0x3f0e726285263acdd3bf96735425dec5c4aa69b300684a330a4cfad084148a21. 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/CNZ511800592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41975fd07d3322aef6c57887ac9319faa8cf9a8bdfd913d05fa438972f2af3d. 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/CNZ511800567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f55419ea3756df9a982a6139b06638f4334a3fc8e8d719c63c92d74b4bb5dc7. 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/CNZ511800547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91a25866e9fbf45306cc96f9c27cb7e5d34d5529601149caad8a36788a8dd6b. 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/CNZ511800561.
街声大登陆合辑Vol.1：这个世界让你紧张害怕吗？
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c6acaa940b93865f775c839de49da2b0e8a254dd0aafb17f13b409ee356b35. 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/TWAE31801559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948647062c77411fbc43a6691dde60680ebb14cdad564e903d5a4bd024e0e437. 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/TWAE31801560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc285a450ceaf3b49c2d35996447d19825f3eb856462f9120177999d8022892b9. 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/TWAE31801561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844e6e3f3d782a4765fddf4ad4cad90fc6fe62926fa26172ba5234ec80b250e4. 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/TWAE31801565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbc0cf7d20ef9e2b55a0efb4cba06fd4bc2e997eb821e22e6bab72eac5c48f7. 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/TWAE31801566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e9c391ce7b22faf906918bc334c14793e3e6ed43cd6c246922e31adc136a1b. 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/TWAE32103595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d21c7b6d22e3cfbfb42017a0b2435f3307ed870c997b8aeab399226f60da5cb. 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/CNA131700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dbc043724da62a2e1ffbcd4623efcaf1259bdf606d696b6e4ec39c5d3a4d5a. 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/FR2X42125517.