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 0xeeac84d870b26b43d5d57b5897c1d7d94ccc0764df4b31bc56df2277c86ee62f. 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/faac2dea-24ce-4b2c-92a1-c424dfb8f81e.json and https://artists.proofprofile.net/proofs/artist/faac2dea-24ce-4b2c-92a1-c424dfb8f81e.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 0xa648565b100e5c6d01b9fe17ee431b8b09413de1787bd568dc8bb1e289f36252. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ARS8R1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde10a2eff221e9de08984d35e62e1e266ca486c58c3a8a841c4244a71e91fdd9. 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/ARS8R1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd141f9712c27fb316496f0814e77524f9faa2de319945733479b321a40cc03a. 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/ARHXW2002431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51b5144a4fc1c29156755915b1629a586a307cc3ea30d154484035410559dc4. 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/ARHXW2002432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f2644c0faa736805bda7158868cba5bfbf29c3f11a79f6ab2f1551b53946ce. 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/ARHXW2002433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cefe34eac0e15dee2e833b7295d96aa503e4540ffd27cfefcea258c19ea6194. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARHXW2002435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd049b5a42aaaf582edec6539da057947d783eda22bad7973052aa3f17689f41e. 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/ARHXW2002434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d17c150fa3434427a19040c1dc9c268150f54e01ebe6646af78c377c1551401. 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/ARHXW2002437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b3d460319322951c7cae1ae120954d02b213110386f0794b25c721b7747cde. 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/ARHXW2002438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398133519fccca3e9e91287966f9dc8aa407c4f01a4ff8f714dcbbc6845068d8. 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/ARHXW2002436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9d9a08e621b6cd2314ed60f6fad75aa73f77117922490b18968ea7e8c8b514. 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/ARHXW2002439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cd551ef71ee508a99f03070c0dee274d8fc4b6d00b7eb1fb9ad1a130d99336. 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/ARHXW2002440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1f4a4fe5e02279e77a4c09bf4758092c66f25c20fc93971db1678f9d2527e3. 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/ARHXW2002441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83473b3ab09fe2943602bf23614712d68cd542a8c4031bc64b45c490cc5a43dc. 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/ARHXW2002443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1074313c21b571c70464fadafa14ac86b842b97fe41b490d5f2672b29561b659. 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/ARHXW2002442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c82629857b7d4bfd3839e28ebd9f33c442422dbd4e3b30aa771ec77c1950e2. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:37:42Z), 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/QZW9M2462918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d5a32fcb615cd820d6507fc5dc39a4ac18f82c826e860997055359b4f566cd. 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/QZW9M2470384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29727a6b7daeb9f04ebda71d16e24969ba01a8d71c2c7f6e95f702c07534c81. 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/QZGLM2501233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1bdc1ecd3fbc0f8fe9baf00d5c21a3e5ea9f2eb4e7a3c2e27e02f65d2e09b3. 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/QZGLM2501234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0ed8772275be760409df464ca127e1ad6ac834cffa03d2a7daddd78e5309fb. 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/QZGLM2501236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c5c39974f248f9485993d7bc9c6ca7f005229d5670824295fcf2ec92dd727b. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:44:09Z), 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/QZGLM2501237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6a9b815290064b8297eb3e2fb51117170c9928abbb9c32adfc04a93bfc8310. 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/QZGLM2501238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e6fc307f355c2b2523eeb69c9cbce38bf894a4dcb722525d462ecb284e3bf8. 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/QZGLM2501239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1272a8b70d741087493c97996da4ed88f667e700e3980d4d7c1dc0f46148c9c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:36Z), 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/QZGLM2501240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856a92d9ba69ab738d4f183eb88fa1dc5a9f2f002a7ec7438b9ae41c8d867ff0. 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/QZGLM2501245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae92b351e900c8d8242a1b39b28d746088a3d3288b970fa0664a875946e8efcb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZGLM2501246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dcdf6847e1c3e8448884f09149cc899856ba8e499ab5d781a547667152b76c. 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/QZTPX2182529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997ad3421d007419fb9a855d4ac7b6b9c3990f27485f465afb8a0902dd72d14a. 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/QZTPX2182530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2567fcd6b4b0087771f39cb9d7402321bd702437e57db31832e283f096b0f651. 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/QZNJZ2195047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e10ad70918ba32c1f32a3c37a6dba0c59a5b1f23913ca5113aacfef5ea71e9. 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/QZNJZ2195048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88daa8634eac3d26f5ef8761dd1d869338cfb334359aa29033e2b17148402c3. 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/QZTPX2182531.