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 0xe5be3d3b6838d8a982480879c0f538dbd7337643a45ebbc1cca97188172d55b5. 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/eb244634-7edc-492b-848e-7eed97fe0903.json and https://artists.proofprofile.net/proofs/artist/eb244634-7edc-492b-848e-7eed97fe0903.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 0x9159a4d23862f0cb9c4dec651c07a1413ba4bccc5b634fb17d24870a8b1affae. 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/QZTPX2252813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118f555f8587fc7b86cc93bcf9d55838ad10e16d881ff9b110376fd034de1415. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM6P42351189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab395c901acc63bcc67e7dd40fd23db28511df1f17e1da5d138c272c1767cf4a. 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/QZPYN2370687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d6f5359bd5c9c21b37a0b4664fcb33a251736a3d3dd84820a1099b0942adbd. 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/UKXN22370665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8753315e34e67b93b9c3e7b462093416892a29db5d53d28493426de0df9ec963. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:58:32Z), 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/UKXN22370666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79140862db9320a6305e64692bc7f06e65a6ddd92c13c4ea36698424d343f646. 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/QZNJV2493643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed08e4f681d3253b05c425998ec6694e1c39f9ba5fb26215f135a6ec9045906b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:59Z), 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/QZW9L2407643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955a77b29ea65b686d0ac6fa1d1593d4dd049c97d75211bb76302d37088cd37c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZW9M2451513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be57daa19f887ada4c91f5b0cb3423404340c5684c392b5d0a36a619ef96a34. 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/QZZ7P2449514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c2a22de6b5ed2ab3c15a6879923564d3cddd66bf5d5e33d445fbb9e62fe8cc. 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/QMFMF2414889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047bd1bac55566d209e046b80b51e816b54342a7277f4eb15746235808e8e4be. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/US7VG2511792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe44e4a208324de3c044713032a193f8823682a1e2493601e1534f5facf44d06. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:39:36Z), 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/QZGLM2540006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0cfea4e24d26e3972be4c6efa6358f68ed32023d0138793a92debc126eff67. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZKGL2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6014a6129a51caa43247a4c34c66c95851096d7bbdf5dd9566c2037574dc6fb0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZGLM2591835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab9f12e4899633160cce6c87004c1b0301cb4d6bdfb265976aeadc52ee60eaf. 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/QZNJV2586418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d33213138572846c1b213dde454d6a9de134bdf59d412153c3403d96a9f56f. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QMFME2534490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f88ad9cf7099eebbcbecc75fc03190639ab28922323e56eaf76accf4f350a4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNJZ2529399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86afadb17c5b0b0c517a58905fb19405cea1e4b72a3508abc6e225c67df2eed4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTPX2509144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb33c9ab09aa6830cd4a0a1c64688b464c07a3719e5a48be64455daab096af25. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTPX2582954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35d1fd45c2cbde109d1f7d40750b1711b0d8fd87fd67bd37a01a6b3af4dd748. 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/QZNJX2383240.