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 0x57fb4bdc241efe9e368a4191117f324886608bdea0516c8c569c2f0e8c1f53b6. 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/7cb6ac4e-bc9a-43e5-b2bb-8e6ffbe3479a.json and https://artists.proofprofile.net/proofs/artist/7cb6ac4e-bc9a-43e5-b2bb-8e6ffbe3479a.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 0x66a1d5145c1279b5a4d7ffff681c543a827fce730f920009a4ebb51cc7444b10. 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/KWA002201527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a78a8bf787723ba41d5bc75fab3db5055da44f518acec86ed8d307b80d11ff. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:05:58Z), 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/KWA002301639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cabbf9440d3419b84beba0122afab951983e0a19d2d8eb8dd2bd35967b1b904. 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/KWA002300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563e53d9548831f362ef9b9ae0778830837ecc55120a82ebbda1d134170ef8f3. 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/KWA002401150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f18f02618f21c35daa3f2769fbdea1e98ff5e18c9e2897902a082b3dfdc3d6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KWA002401175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3f12ea943a1e987c672a95170a547d7abcea3ac86485631f60629a49999faf. 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/KWA002402129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba048e895f58e5578a667a158d07dc2d0fb43ca978d7f3ae8f76e1c77bbb7776. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KWA002500143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd918d307812ff7e0a747e7cbf50f12b758d76347ecf493aa0dcab82e851b6720. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/KWA002500194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3553dc8f34cae30109ed99b118b5cd099225fed33cafb6decb69c4e769c40000. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/KWA002500706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50df9ef823901b1438463e41d041609715c525b75b3551c76941cb346fe2d45. 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/KWA002500818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb7ad28505dd3d7b558b1e5bc620a4623be7df94322fcbf6988025e33402cb2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KWA002501239.