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 0xee042d175f80381543b1939bc317de91651cea1de94389d4b4894d17b87f5bbb. 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/eb8b4f6c-1096-4722-915a-4e1e9bd8ff41.json and https://artists.proofprofile.net/proofs/artist/eb8b4f6c-1096-4722-915a-4e1e9bd8ff41.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 → 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 0x952ccc2c23d1427eb787ba3dbcf366364a4ce18ce293a9a6357e939b68ae69fb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR9W12100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7481b2b9db1083a6c7a677249e75ddd76db035dc58000aec9b8574e3ce8d0af5. 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/FR9W12100702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccdd6b591255effffb2c2a4b872ec5b18298402c48cdd41704030a759d9271f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W12100705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd4ba0666eccacd3b077f3881ea9e9fc3cc7bbef827498215a11911c5653ed7. 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/FR9W12100706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f414f1665a736cd82496e4e364af5c878b1884182291dbde94a709d1cad20f9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W12100707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd36c75556b10b78785befa85986fc1dfda2fc0dba90f1585b162c5c36824b6. 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/FR9W12031121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79cf50f3a56f9fa3495273e2cc06c45b050f4cccaec869490df300f8a16a2c5. 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/FR9W11500596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a5870def508856bd4d90c59b4fbb41775f6c4cbe8ed9ad2697f7977e4aa43f. 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/FR9W12350811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88bc02abe159c2f0fa82ebc1c141e29428ff786ced65ed1a60dee0c7a790792. 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/FR9W12315392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd36c75556b10b78785befa85986fc1dfda2fc0dba90f1585b162c5c36824b6. 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/FR9W12031121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b6bc88285cdb1bcffd64edd7a80e04cafec439f3ee9cfe605b9e33683b2e7e. 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/FR6V81323939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac30390a2cc0f5f412e6830587da89dba80c7347482b0e70d8c46ebb42caa21. 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/FR6V81323940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd046ff23e2574cc6f47cd02a005739486ac4760e04c98238f83196afa0bb2ba6. 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/FR6V81323941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0dabe9286f38e9a5df8b5aa28e139d43f50e548ba37ed41c638776741b3923. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR6V81323938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb107e63e9e9c4e6d904fe58357a9e708c21558626e6e6b48cffa10f0119b79. 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/FRZ111000225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7110113cad291c6f0e06d91de58193df39f9c99ea215d89bae1f3e527cda86. 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/FRT461500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014e48a58c0c3e6ba6ce39d21a05dd0ecae0d551e45327e97a8fa2a9003863b4. 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/FRT461500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f58f740072385a96c540a160704edc89161b13172b410d3b000720be514a62. 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/FRT461500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68d9e11561d75018895aa3e2a8b27e440a8b0d9838a0d950082d778e088eb0c. 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/FRT461500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe326385a4e6a19c6e2a389222492292ad23d217fd6b97c3d76a33f0c99018c44. 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/FRT461500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f66826117a9feb4a6ad3b21ca9725801fba1afe5017e2f9964a0a5ad47c617. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FRT461500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d73ac096c7b8d271df9c9134c219aeaa01875331c9bfe640edd219eb3f1c3e1. 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/FRT461500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b6bad77fecb822dd9681eee8f690b7f05100d0a6503414f1e34385a20da7c2. 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/FRT461500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f067ce476f9805db29ed9c34cfc9a8d7d5d99c2576493557603c951162c2c. 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/FRT461500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da5d22409825702a0db99d208078945dc92b308e736ef3def84767941a6fbe8. 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/FR7461500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9e20d21c8d876eea0eca08b19ea16e0b422cdc11e70811634d11143ed1b9f2. 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/FRT461500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78147b721141e6d694d3830166157483d708ecb14f1961c4193194ccba2dacd3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRT461500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edde7da84de79f91503addec3c8a31022e868d4cbdbe3c99e4ff3d367b0486f. 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/FRT461500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2446674b4c312410da0e94df8e2050bbb42090c2c24bb5c0542448bb5fa51c52. 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/FRT461500150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5237b48b065c90df15356d5495e364d6ba02562ce4058985a4eb98a5a86a84. 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/FRT461600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30640c40472ef178699b684e5ae15bcf70e4b184b913c383aa280b84edd3a508. 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/FRT461600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e07e7883240ca7d30cda947d2030974cacc1118d24d5cd4c588e162f3a19c4. 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/FRT461600030.