1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6d8743946ff0a83c11d5f6aa52aaf942fafb7358b3a4e36d2b89ff7644be2b1b. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85e6a6fe-fb41-4081-a8cc-d2d8e442e714.json and https://artists.proofprofile.net/proofs/artist/85e6a6fe-fb41-4081-a8cc-d2d8e442e714.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 → block OTSBitcoinBlock must exist at that height 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 0x47522caf2753a43072d4b97e0a80d719437068aeaa5b7ed915bc2d211c46b3a8. 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/TWC019500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43aca3a2c3a539bd2812e3b64d30ba1d9da25472c2329a41810e44354ee1893. 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/TWC019500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e6a58b896c5a0bcd70820f16c9e958a41b7cee07495ecffa2fba850c171d9c. 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/TWC019500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181a26f266808989c6f59947962670c329ce1b7af4e715038f5ef1fcb6c7230d. 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/TWC019500280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1420e8b0433e77834784cd4bee013137ceca718d195f7b1011194344e04e6f. 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/TWC019500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bde22d53559a21e64979238f05607fa9427ac47cda20513c3d2fc3f5934385. 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/TWC019500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9601b80164a603d51d34a1b4d6c56e5ad6f16a375b8e7ae291ab6a107e1271e4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWC019500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63522d894c0a90d67a26e11648735aeef99481f674ff514d40db735bff8fd762. 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/TWC019500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb042f942a7805ec1cc7ddaae601c4f0b9d33fe8ffd5582a7b214f70d2239a9a7. 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/TWC019500330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171dc44f908c590f45f1eb38913e45280293968df7684e3518f28a1a3a07cef. 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/TWC019500370.