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 0xcdd797b7adf640da6bb7f84c520c5808cc2f78544f9712891c93d2713e4bd6b7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8068749a-694a-4b6c-be99-c8f0c5449b91.json and https://artists.proofprofile.net/proofs/artist/8068749a-694a-4b6c-be99-c8f0c5449b91.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 0x9ef647c650be0f47634e104406ebd7c7cc7aee82a49d99c67d6aff15beb470c8. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZFYY2557332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd37f2164b9ba9ed63fa25cf39ec756f85bdb2a855d7c8c7d9420054ce78c695. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFYY2557333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa1bd4c2f76736b7b310128ea52f2adcbdb76af384e0b725467c24672fd6570. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZFYY2557334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1be56de72ef8ed8315fc5691c7807687b6def1f58f256806c5cf05f09c6304c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:08:44Z), 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/QZFYY2557337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6ee524aded28d49fce2c01ae4e974cd4c507ae8612b14f1604781f8ffacf99. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:15Z), 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/QZFYY2557338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b52edae7fb313c23ebd2d368d50a06acbc026cd6b97475bcd22b0c3d1daee2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFYY2557340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea058b820cf358158c6c53895b05636574b771409c39c1ca18a7d4f78ebbf43. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFYY2557341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441c5f54759a8f8ab631742f0fc4d9f5ed359932ad0435d8e657155355f7c8bd. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZFYY2557342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0503e30611b0786ef395061ab57ccc00c06b3bcfc136c3ac508bca5e87f4d203. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZFYY2557343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b49a48a84c7c78b59a2e8bad0288a1d448f2e0d24a9e60acdfc8e6eeb2d2b27. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZFYY2557344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb4c1c041731976232a43be5b732851b98ba92392d4173e812b2799363d4325. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:58:02Z), 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/QZFYY2557345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c422a2cf930649273237d1df756ab6c499a849ddb833627e05e73b22d0be38f. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZFYY2557346.