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 0x168ef31f12e33d1d9cfd99fd6fa1479559cd288cbae614578de5aee372b74708. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c44255d3-001d-4df0-9490-7ea2ba743954.json and https://artists.proofprofile.net/proofs/artist/c44255d3-001d-4df0-9490-7ea2ba743954.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 0xacc6ceae9c899fe8ab98fec51bbf918d2efc82996f4c76ffc0008ace23cca1a7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:00:46Z), 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/ARC571603352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ec26e6e040b1715066fffbeb63b5b74562b65db538f6e2e126a771dfe98e3. 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/ARC572000522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e4a77cef61201d8dffb17c8a27add2971ed61c7e02a131c7883bed2c2c434b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:00:40Z), 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/ESA011588326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d02709c100249d6ac01e03b09039e049c49adb4337db22aed1ac236615024c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:06:41Z), 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/ARIXB2402178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c786d3a44e07783d022a27d8703976f7ecb6fea1fdc5bdd7f5957ff01fcbb23. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARIXB2403367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e4a77cef61201d8dffb17c8a27add2971ed61c7e02a131c7883bed2c2c434b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA011588326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d02709c100249d6ac01e03b09039e049c49adb4337db22aed1ac236615024c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ARIXB2402178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ec26e6e040b1715066fffbeb63b5b74562b65db538f6e2e126a771dfe98e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARC572000522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0450b8c35550fff0e5799f3e02845b93db9fe7b497b943d78aea8314d671fec4. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ARC571801474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98075b32f73394eca8a26abffd9de148caa7271de4bc873d5995cd29e78e06d1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/COAF42391831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a9e11546c20f881648dec5bbab952af7d7cbd09815c96d47944910d2b9dfc6. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ARC571800549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c786d3a44e07783d022a27d8703976f7ecb6fea1fdc5bdd7f5957ff01fcbb23. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARIXB2403367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d02709c100249d6ac01e03b09039e049c49adb4337db22aed1ac236615024c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ARIXB2402178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ec26e6e040b1715066fffbeb63b5b74562b65db538f6e2e126a771dfe98e3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARC572000522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0450b8c35550fff0e5799f3e02845b93db9fe7b497b943d78aea8314d671fec4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ARC571801474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98075b32f73394eca8a26abffd9de148caa7271de4bc873d5995cd29e78e06d1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/COAF42391831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a9e11546c20f881648dec5bbab952af7d7cbd09815c96d47944910d2b9dfc6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ARC571800549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e4a77cef61201d8dffb17c8a27add2971ed61c7e02a131c7883bed2c2c434b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ESA011588326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f353d279a5b9e2cb389e8586b037a6111518312f4db3855c558282690ae6cf3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARIXB2501881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943b36de953788ca98d1144e5197dd695a8cc0a83475a1021fbddd11aa3129b3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ARIXB2501892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8523408928ea15c5c34b81dfd04a3a51a6b5ecf80954c76d046a4969eb4c04. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARIXB2501953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef757652754992fde590c9315b536eafc48dd8fa738168ad4dfaf845f1d40291. 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/ARQIH2301540.