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 0xad9e1505795bb39f4706fb9dff217808d5e226352ae2296eb98c830b4d5c37f6. 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/aefd3e56-7156-4f20-8d4a-715f7da3176a.json and https://artists.proofprofile.net/proofs/artist/aefd3e56-7156-4f20-8d4a-715f7da3176a.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 0x44074bf0971bf17f3bc623b124887d11c63edfe772484daf16ada474ddfb7719. 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/BXIV82413562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571653c4a28adf76e72240951d14ff4ca35b6ac29736c78db9ab2877e026e569. 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/BXIV82413582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb7459ac111623b8d7b6f919937ae4789bc1a8bc56f811fc1823ff41a0e2d34. 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/BXIV82413636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44212046e62d4eaf6d2b0e2d43d7e12a379cb9cdefcc437a46239b0ccb20963. 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/BXIV82413667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49dbe74741d9574743d3b671f902bdb1c16663eefb6f2dead56eced786f52f8. 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/BXIV82413694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00248c98eb2512017fa8c2ea73db1923fa2bf4d520900f7832e52e564209021. 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/BXIV82413711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16c09b14fd320a2631f8696d277abf10afcef3ba3130144e91dbb64d55878a5. 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/BXIV82413733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c56c9fbe1934f1eda09734666170df669927c0e2694ed80080a0f41561e970b. 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/BXIV82413753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64296abb48120e8cbdf351f58873e5e2227199bcc155b7941a324f98ca92f77d. 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/BXIV82413758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec62b24a40206494f85a1d5015984385df52dafab180b2faa67f0337c4373a18. 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/BXIV82413783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7608ef341e4bfb7bfb90dc28ec2850601a752b4d2ef3c147e9d29e70dfe58f8c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXD7V2574135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e2cc828d5a52aebff463a831fed48e3cac0a95eb9140b23ffbd003a459760b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BXIKW2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1240218538325356dd2e1f43e2ce6fa83e8490b5a57df7f958b95229713ffe16. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:43Z), 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/BRDRX2500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbd4ef4586bafd7d801c72220f8e21a6c32755b89cb60e4fae4ff17d0eab14d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:18:13Z), 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/BRDRX2500036.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eede13d7126a156f69e8ebedc47dc5fa89147af12ba9fa2834880dae68cc06b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:35:13Z), 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/BRDRX2500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12130f734c9f34d20cc2cbe6bd9f6e6ff3ac06ea3bd838ff1c0d54ef7c1d27ad. 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/BRDRX2500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67de3a4f82a504a7ddaa71b2a5387534b2ef6640f82e8c567c28ecee34046ec. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BC3HV2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79e4bbe8052633650a2f36885c251f48ae9845b8810860e9bb22fe4fe16668e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC3HV2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd48f1f67fbaae8289ae8a636c7efa085ef1fdbd13aa5989e2c3595c9e23257. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXIKW2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0de2199b6ddedab2e34ef350edd4c83813d834cdd487d40f2869548124bc4ab. 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/BXLT92400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368cf38add6053bb78abd5712de167b64861e9fc3b4414176e784c740b11ad09. 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/QZW9L2381113.