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 0x6f9858705b74266fab26109646fcd932f5917a1603901a82bfd107461676bb53. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52b9d82a-d23b-4704-84fb-e85597e12864.json and https://artists.proofprofile.net/proofs/artist/52b9d82a-d23b-4704-84fb-e85597e12864.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 0xb8201a0f8ca6b1ecc11d0ba3fd17aa9c02badc83254c5e38b44c71c58669ee09. 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/AUNV02000245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83deadae107a5ba4d1833738d0051696a1b5c0ce804d051a5bd798009b87fa5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/AUNV02100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda8b0e0d1d38f18105ae73c38413149a688fb2de8c9da3768d40762a595613a. 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/AUNV02200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58be41830d077a3b9cc0980751250013bea39dc840e28825de2b5cebcb7e955c. 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/AUNV02201198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4873c269152f81d0cde199153bdc41001145f3a08d5ccf377bf56eb5a998e4f6. 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/AUNV02300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12c9c777f7673771e39271251a5caa7ae8855a8e68a51898d9e2b991c84beb4. 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/AUNV02300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d04ff4bc5a746ecca8149d91ad54def066ed7868cf2b5cfea21b11e6da98b9f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUMEV2494215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2be1772566ae034f300361dfcf09cdf915bdff1defb310e0fb4a38c55fc2b0. 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/AUMEV2543235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbbe5cfc92c5ee1ca9e0e0d9d83adf0f0502601c6e1769f80c9daa15067067d. 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/AUMEV2570679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6556adb5a534cf2897db96f26c80e00b75275d63a19b60dad7495c96ff7fa25. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/AUGBT2422711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb5483d0dc5ff33204a88ec38d5bbb0a6034959a597e75b546ee9c62b8a2d27. 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/AUMEV2503742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2be1772566ae034f300361dfcf09cdf915bdff1defb310e0fb4a38c55fc2b0. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/AUMEV2543235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d04ff4bc5a746ecca8149d91ad54def066ed7868cf2b5cfea21b11e6da98b9f. 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/AUMEV2494215.