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 0x141e1653cada20875c61ae3bc2963e36c376fc4dd1c70a078232ed29f731b9da. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30d44183-b644-421b-b894-18f573b94c18.json and https://artists.proofprofile.net/proofs/artist/30d44183-b644-421b-b894-18f573b94c18.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 0x68027c74c56a0713e1da30844b0506d3400b2aba7d167e44cbf6e5511b4d087f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NL5MF2100795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b1093f7f4ecf94856b15c8381bd10def938a22a93c3c5ce1a0677ca62711ec. 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/QMBZ92288014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd433cd67552ca9f348240cff488e914a624408372c33c1c88ab81665e1445420. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWQ2350620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb43468e1b65651649804e417569cbeb72c0c0a068a959a17e714dab16f070c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NL5MF2101942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924ca400d94312c5d91b1b38b1f1c92e3e5ab6bafc47d60b24283d0d75d77192. 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/NL8RL2402527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd7ce13d358e468afebf786f4ab6e1aa132e39c82a248ba586266f049ae58b7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA82410019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f133580099a2ae0565e4e1a53607ee556180b80b4211196154a4deae53b2b35. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN72428234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c983fcb275247450846938b738e99e9184765b810dc6f7436bd2fd5af3c0d0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWR2473921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db5da830fefae29d7c03a7c1e5e727f8d2e9a5f1c722ed229cfa34818f63771. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAW2460320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974d4ec301ca44d46444c3f24fb4068e967f98678324ec01af7606d26090dd25. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZWFM2437758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b62aaf2a287b604c0c2b035a57f4731d4e3bdd3e85ea415492f02d80c034499. 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/QZWFR2461763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ab2492451994f44f1b0b9778712bce8b921f383ef92266282bd600c8f0babc. 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/QZWFU2456605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4598c4b8bb648fbffcc74b70c58ed599786750f86a3da662ee270ab0ffd2413b. 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/QZZ7R2465717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5ab9e3b88bf80c5f17285e5af10328937bafa4d456b754619a5d7980eb9ad3. 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/QZFZ62537180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16f96dbeb626fce48e865afad19e97b97a69027a62cf9be602e066b440e7f29. 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/QZZ7L2496020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19a82ed05f17d0687c5b8c5c6432106a12020e56571600d8cb52e325309bc03. 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/QZNWV2452000.