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 0x7a6cd4c26120a0778780692ff5de26f886ddd1ebfc487680b5398f9a85a7172d. 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/42544f0e-ff89-4623-a6b7-5195ca559173.json and https://artists.proofprofile.net/proofs/artist/42544f0e-ff89-4623-a6b7-5195ca559173.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 0xa46e30685ac90be213638cc03bd7844617d218b254dcef1e62177760803186e1. 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/BRRGE2102329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46e30685ac90be213638cc03bd7844617d218b254dcef1e62177760803186e1. 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/BRRGE2102329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b80badb5470fb4d17a86536f3e8dfe7e996e83e0f7bd952312959c6547933a. 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/BRRGE2102331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367ad24cff43be68195a5e7f2f53845fe194619e903100b004f49e12ed71a26e. 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/BRRGE2102265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa531ffd5fc011041644addeb1ffeba56f6d1d964a602f7b6ea967a961d197b. 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/BRRGE2102325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf722c7289539f80b1adf312260faf4a489e083e3de7c72a2bc8c65ff58095371. 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/BXMGD1800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb006012d4d034a0fd65f952f42d5a9df4b0d028faca94c7ead9c25caefe4eb2. 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/BXMGD1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83b7e8395cc013c3d088a18bdb43badf981d6d9c6d00f6ae8d9c5bacf8e1d3b. 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/BXMGD1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc532a77e91dfcbb5a924e25f1bc74fcc53547b3dad98eebae5de9229b8cf573. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BXMGD1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0625c7d6dc5b26ab2e632df92904d2fec244fa71224870e299a536cd1e046e97. 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/BXMGD1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4938ab6a625bb17454648481f5fcbdecb85fbf32300c042d876a7e2dac57acba. 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/BXMGD1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b5db64d16bcb7ecb6b04e00ee20e520b376ec24f9d67f5bb474e63fae398c7. 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/BXMGD1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7a3fbb093fc373a21eab830bc69322abf792a2e37c57925eb13e53a8197222. 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/BXMGD1600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db5c2de74c3dd11f48470b43744c16b4f2f22ffcfca291e1f5c1bd3dd55ea8b. 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/BXMGD1600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0e910125dd635fca8f7292340a5948990f954badb8e824ff852cc64fd1e87d. 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/BXMGD1600065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce7dc0fddce8a1b893c0056f8debefd6546722b7c650595a0e7f1a773fddad5. 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/BXMGD1600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c6cdd18badb343d735c36c7c7af886cc75b3e44ec3eee6aed059d8dec04124. 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/BXMGD1600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf61c164074eedb45eb3c34c231f99394a515df3970668ad9aa113be0656566. 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/BXMGD1600063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da11f136a9194ba70df7cd0bcaa9c065af3c5f0f801e3cc4c5eb07287521e89. 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/BXMGD1600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f999efe15ab76e9f724babf4b5c6714cb77d0e781d58cc6dd927ee192fb45d. 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/BXMGD1600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ea198d94de6603a7391e32552a59548ec74db12f8fe15adc8e1ec3582fdf47. 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/BRRGE2300654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ea198d94de6603a7391e32552a59548ec74db12f8fe15adc8e1ec3582fdf47. 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/BRRGE2300654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b38d8fcaae758f22d92f4cb794f4380251371319e384f1b33ef919792fc0dc. 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/BRRGE2300404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dca47b261c68efe337ad149b41c1dcebbeff4f8f551c41f1380a0e8464c7b3. 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/BRRGE2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa531ffd5fc011041644addeb1ffeba56f6d1d964a602f7b6ea967a961d197b. 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/BRRGE2102325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb006012d4d034a0fd65f952f42d5a9df4b0d028faca94c7ead9c25caefe4eb2. 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/BXMGD1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc532a77e91dfcbb5a924e25f1bc74fcc53547b3dad98eebae5de9229b8cf573. 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/BXMGD1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0625c7d6dc5b26ab2e632df92904d2fec244fa71224870e299a536cd1e046e97. 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/BXMGD1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf722c7289539f80b1adf312260faf4a489e083e3de7c72a2bc8c65ff58095371. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BXMGD1800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83b7e8395cc013c3d088a18bdb43badf981d6d9c6d00f6ae8d9c5bacf8e1d3b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BXMGD1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f92b89a928ec0a8f94db688785a86104f983cca3e6f34629c89b46ae346b5c. 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/BXMGD1700200.