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 0x4a2637a4912ea4b45ff69f30df9713759a615b9490ef637911d3de4cd7a0802e. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fb10727-ea82-434a-a606-96995dccd7a6.json and https://artists.proofprofile.net/proofs/artist/4fb10727-ea82-434a-a606-96995dccd7a6.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 0x9eb50db2046895c7108fe1ac3029f204950ab7c919b0b39d5f2680bc958db014. 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/QMFMG2328534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694801e54b2f151342cdca35ab5f99911fd3c1c24cf183da55c0bed0758fdff9. 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/QM4TW2487081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60cfd5b718d3dd6c07414e74142b2990c9359cb3c910580c2a5e203b81337d9. 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/QM4TW2467703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7697e3b98e4778f999175cc40bc96e7a127bbd914edec970c0ffa02b64fd6c51. 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/QM4TW2487087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046dfb2ea84b84a51b5db4feb7d68df4d638a5764dfaa904ddc5a68f774f4535. 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/QM4TW2487088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd56b48def5f237b5778c04c13d771a80036379d45864355f22f477855270f6. 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/QM4TW2487093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6668b73af49abb7098c161bda6ad92b02dee358a662e3b81258a0980a43aa1e9. 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/QMBZ92023844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567d8d8e33dde94f5d984a0e2de999b4ee893acd4b289977f92e7c3c4bd5b2b0. 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/QM4TW2160649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4446cf109d0633f97c79aa3f23fb3ff6b652153e7d7ce04604949973aa9561. 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/QMFME2074013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0270ed47bce8b0e8c39daab25274c08df75d99ec86279dc5ccb475554dd76a8a. 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/QM4TW2160660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa04e8825a5c5ba53ab09df23e94cba38f07921aa4baa838d41004031454f17f. 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/QM4TW2147735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39031ac8d9d118b3cb99cdfd5efd588919125330d767d63005dc0b47574cdc38. 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/QM4TW2160675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aedc9d32942d6fe3863db1605aa24b9f8deb91220fd255ae85a665ae27e101. 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/QM4TW2160741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046dfb2ea84b84a51b5db4feb7d68df4d638a5764dfaa904ddc5a68f774f4535. 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/QM4TW2487088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60cfd5b718d3dd6c07414e74142b2990c9359cb3c910580c2a5e203b81337d9. 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/QM4TW2467703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb50db2046895c7108fe1ac3029f204950ab7c919b0b39d5f2680bc958db014. 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/QMFMG2328534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb50db2046895c7108fe1ac3029f204950ab7c919b0b39d5f2680bc958db014. 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/QMFMG2328534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa04e8825a5c5ba53ab09df23e94cba38f07921aa4baa838d41004031454f17f. 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/QM4TW2147735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4446cf109d0633f97c79aa3f23fb3ff6b652153e7d7ce04604949973aa9561. 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/QMFME2074013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6668b73af49abb7098c161bda6ad92b02dee358a662e3b81258a0980a43aa1e9. 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/QMBZ92023844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1902954a831ed2ac42966e824bcf3cda850991d68f559d18982bcb5678aac3ad. 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/SE4RV1808002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0456ac80e84f5075dee12a1fc4d97b661ebc3d7db55dff027dc7fe0ba15555. 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/SE4RV1808001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bd4bc58f09b855fc8c88aea742603bdb521fdf43f3cbe2ea1349933ad9e960. 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/SE4RV1705001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b86a0a881049d53e768fe3ad1fa26c27169109df66ca9760c72d1758cc2c37. 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/SE4RV1702001.