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 0x9abfc33d7e0321434b0124e6980820e6109b8f8a3c06a4d37d894120dca8f173. 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/bf80673b-5e78-462a-b18d-0ad7e861b903.json and https://artists.proofprofile.net/proofs/artist/bf80673b-5e78-462a-b18d-0ad7e861b903.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 0x0c355e4b102e97dabcd3ce2e1d0663131c1f8bd0b1f08a10519593198a0f7251. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEUM72307092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc006dccf9a01cbdd059d91ab43be24bcd5ceca6aa307ac0749d31ccb63b3db80. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:23:34Z), 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/DETO32300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2430996165d2e5e701d50b0bc8e9f971955b9ae0e8732a8803ff5f9b2e45b5. 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/DETO32200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f6c10af11fc6a95c5774eb0f5cd0280b113a93baeecc336d13f712d02ea053. 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/DETO32200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60189d7d65c275e49d27d17335aed211e64876e2e5dbd2fdbd7b8356dabb453b. 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/DETO32200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f71225123769289ea034853ad8df0cec82e5111d6b63e9ead0a1d8f18b1b610. 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/DETO32300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbbb64a994b0eb29a1a807ced5a4ec2bc03cff27fa8949d16573dec2072e8e8. 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/DETO32300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde989823b5034237a9ec900dbe5a23ae861ccf31e952aa9178b1fb064749acdf. 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/DETO32200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8b7f631c1f5c15f4996a0218a7f62d86a228678138d926811bc2056299428a. 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/DETO32200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b663c9c0dee1302abfa8a2b334f48fcd482b9c334da2223f086b21c3976142. 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/DETO32200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ea88672a96c2fb606ae7f19b80e061765915235d89b85ed359541abbdb3968. 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/DECE72400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebfb18ba0ec40961af5901f7dbff1f5a9d2e5f68f7982b4df0e1395d09500a6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DETO32300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2430996165d2e5e701d50b0bc8e9f971955b9ae0e8732a8803ff5f9b2e45b5. 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/DETO32200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc006dccf9a01cbdd059d91ab43be24bcd5ceca6aa307ac0749d31ccb63b3db80. 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/DETO32300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8b7f631c1f5c15f4996a0218a7f62d86a228678138d926811bc2056299428a. 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/DETO32200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8b7f631c1f5c15f4996a0218a7f62d86a228678138d926811bc2056299428a. 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/DETO32200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cf04d13fbb8c7c54ef9324f673e83107b8944678c2c681545e3facdd1607f0. 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/DETO32200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b663c9c0dee1302abfa8a2b334f48fcd482b9c334da2223f086b21c3976142. 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/DETO32200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b663c9c0dee1302abfa8a2b334f48fcd482b9c334da2223f086b21c3976142. 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/DETO32200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde989823b5034237a9ec900dbe5a23ae861ccf31e952aa9178b1fb064749acdf. 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/DETO32200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f6c10af11fc6a95c5774eb0f5cd0280b113a93baeecc336d13f712d02ea053. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:09:16Z), 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/DETO32200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde989823b5034237a9ec900dbe5a23ae861ccf31e952aa9178b1fb064749acdf. 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/DETO32200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde989823b5034237a9ec900dbe5a23ae861ccf31e952aa9178b1fb064749acdf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DETO32200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60189d7d65c275e49d27d17335aed211e64876e2e5dbd2fdbd7b8356dabb453b. 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/DETO32200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c355e4b102e97dabcd3ce2e1d0663131c1f8bd0b1f08a10519593198a0f7251. 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/DEUM72307092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c355e4b102e97dabcd3ce2e1d0663131c1f8bd0b1f08a10519593198a0f7251. 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/DEUM72307092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c355e4b102e97dabcd3ce2e1d0663131c1f8bd0b1f08a10519593198a0f7251. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEUM72307092.