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 0x6b5593fb8467e29438520ef18db1727aef426ebf1fec84d327696fcf89f797ba. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44e15e8b-0738-40d7-b9b6-3607ee657224.json and https://artists.proofprofile.net/proofs/artist/44e15e8b-0738-40d7-b9b6-3607ee657224.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 0x0fc4b7beeaaa17833237f489143845ed8d08c26422947932d3e2d7a3f9e7531b. 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/IL5002400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db0c7bbb304cfab9819a5dd2f4d4aab57c7ad2cef3956f239ebb8d8b6d414c7. 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/IL1012300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691ce15e34cd0aee61ece0bd561ae2732ff579b95922dc9133aa2f5762c90978. 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/IL1012200899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef74f8307fd570f03f7d2ecabf45303f58e6668279230c68f2bc7ce23a8c1a5b. 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/IL1012200900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92c9a04c29a46114082a302d20b63ce89b8c298b4995b340046a61958c0323d. 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/IL1012200901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a0eea0f46bb04b824fe4d28ba179ab2b4398775ee117188897be0fe7efda3b. 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/IL1012200903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd254442525bb593ea4eac635e42f9e052e78a45c203373053d94a304ceb69. 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/IL1012000949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daa91ea57bb1ba39748f4a1b219a4460938e3fe893057b13374ab0a644e8100. 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/IL1011902465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3456ca27c328b11b1b629e67e8d657dcb1ee1439c69b09e95fa7346cffeb174. 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/IL1011901594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110086f1920bfc9f6462204b91983ab6928d30b2a47d32c526fdee1b7ae8c57c. 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/IL1011901071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70ffa1e727ce4845f4f101c50b8033b7314f098ec64060dd379378192e2d28b. 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/IL1011127030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3b03b62c9e6c0858344b183b5d6c0891c74827f5079d9d6dab93ee96a0fd45. 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/IL1011126266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e456d09c7629610fb4c0fee89a7a1f17e2657da837989c46221a9687de822db. 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/IL1011124603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae8e249696bf067b82316ce6537b26c5424bed622f54e17ae2099141ba8639. 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/IL1011122135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864f3c25c20a6604b3f7d829b7c7fd16ead5dc09be07b5c8eebc2bb09b78955b. 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/IL1011121617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4354ae5666967d86e5eb4f899fbcc74fd2548e31123ab43d6f1b26d29f90c2f0. 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/IL1011121616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefca06fa3f723652449f9fbd0f938555f1d44f56b93fe870be088d83cd4969a4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX201904151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f750b5b7c25f456ea62af4f31b2ff22f923b1caa69067f8bcf1f2bf0e9fa0a. 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/FRX201904155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0576fb0124b132510341925691bb0ac8358aa88431cc8f4bf7d9a39ce670ee. 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/FRX201904156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a716d2bfa88a2f26be09f0c1748dff040e41d3a73f82a86a1cfd09f0aefca5. 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/FRX201904158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5433ee85ffddc9ed74555b9708de5b85fb7850ad568c0f95e264977fffa03e. 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/FRX201904160.