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 0x83d202f35efe57306b4d462006e5fc6bd68a256e113814a873f760e5b28894f6. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0357488e-374e-4a52-ba3b-fc3056700143.json and https://artists.proofprofile.net/proofs/artist/0357488e-374e-4a52-ba3b-fc3056700143.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 0xe3927d5732dc60ba333ffeca4f5dec4b827da8b532bf66d5847c9685827527b8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:46:51Z), 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/USHM22362279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb349e7bbd09514dec70dcdf10d5367c940bedfda65d19e78024ff4190fcb60a8. 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/USMH92340125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b984ed4c0eb42270ad20d320ed51d51573fbae219796cff1209105f915c558f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USL4Q2368066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d56e84863f172ec93805d27a5b2e13ac046cc5c2562106c6fbe093dbeac2ac. 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/USCGJ2405091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac9f41668a83217d73539efe6f5be23df6b3f6c5589852055b2f8add5630bd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDY42437824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6a4715b9756e490419344509c2dbfb3ace70f9210d21805394d43f6d11691d. 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/USHM22475678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac9f41668a83217d73539efe6f5be23df6b3f6c5589852055b2f8add5630bd. 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/USDY42437824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99954e33de8e2f3589496a45dac588093a0fa3c1f18c6accbf7fa36f02da32cb. 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/USHM22475679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d56e84863f172ec93805d27a5b2e13ac046cc5c2562106c6fbe093dbeac2ac. 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/USCGJ2405091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587c7faa825d1836b40a702916b00c83c0a3ad7a855de3c840e6ed7c1c6aee34. 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/USHM22475680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d6024627abcac7f8e5ac15f467a2a66a6c6794876e37ff077f791e88a6183f. 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/USHM22475681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab384715f69aca7f1951ed7f4a9d0e6ee101a46444d25765fc28d21de64145b2. 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/USHM22475682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d77289ec3857af0d0056735421aea0699e10cc139de48ea3a70c083c17f690c. 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/USHM22475683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a90be8561972349e4965641f1761576441cf71bed4addc76422980ea1c5edd9. 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/USHM22475684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc2028f3afcc620d5a4e0ffb4b370f994833684528214dadcfcd8502c05cdf6. 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/USHM22475685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cc2c8978fe6e43b547a86318058c9794cb35cc4287440b1ae934da02500c00. 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/USHM22475686.