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 0xc3b7645745134c7bb0fe27705a3c8779a4878f7ad102e3778189562bd4ebccc3. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d312db8d-2ca8-4758-95a7-7eeca5528c8f.json and https://artists.proofprofile.net/proofs/artist/d312db8d-2ca8-4758-95a7-7eeca5528c8f.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 0xb7787c3a751370a615daea2ee74aa641a8b181b5408a73718a254ce963e0dcc3. 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/USDXG0605203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b99108ada6d0d7c915a7a9ae8858949fffb796587f4d4e755bc02e9fd8d6f0a. 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/USDXG0605206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b83b855c73a9a1e4bd9a87a16ebd0c53f937b93406042480c3cb8217fa495b9. 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/USDXG0605209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a14cc21e3f4e40a2090a93c013d9fd0c907cbe4c4a33ab1b2191dad76fd32f. 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/USDXG0605002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185e233f54b76c31ee9a7035541c95010e1381ad8424eb0890c03d443c4079e3. 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/USDXG0605008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8c181c87416e8d805e51a0d61e53f5db68e724a1243ff47bb6e95f4c12541e. 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/USDXG0605009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab16276d17606961ac4c6b23bcaabc71a86db60bddba8b96552215f392f1f680. 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/USDXG0604003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292ad0f4d119d37a3becf2dfe3bd65735ae3e4a7dd5f22b4cdc6f38eee9d9abf. 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/USDXG0604006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5e421782db6095f3c94954e0278ed6b1b8442bcad95451af71bc8bb474ab7c. 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/USDXG0604007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0405906f3b43022f7418392199ff3fe55dd9a720372bbc6dd9f36c5ba3bb217b. 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/USDXG0604008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b6128ddcb6e681ebecc212b268fbfb53fcc60c6c442cc4459f3952b4cae2da. 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/USDXG0604009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9a9e407411c42ea10db915a1ddfa834ed3aea4a56b981fe6c38997a2e258bf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USL4Q0783728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad07d4b960638338ce3c6b4e828633ee24def252b4d0f5d7862039154e6dab6. 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/USL4Q0783729.