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 0xc9396e38b86c926e75400bd506de8c0289fc9212c07bc1a8fbd8eb47b437f5f7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca06c7ee-9140-47a8-9f29-9ec759d169a1.json and https://artists.proofprofile.net/proofs/artist/ca06c7ee-9140-47a8-9f29-9ec759d169a1.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 0x98d108ed33d821f3d9847034210a88f89f452f9f77179b801b2591f955841910. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QM7281495854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5b104f12c073c3bb8ac08b5410314cbaf5e0d52bd7369dcbf20e605ae1f4ac. 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/QM7281495857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bca98b6008a0a42195c7558bb55c50ff43dbd0f47a595c43535500e90cbce08. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM7281495860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46293b491a560baaba8e7f47f885391aeeb69b91a1d63328092e144b1fcdb69f. 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/QM7281495861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3795fd34ca610e0d627e3f38a85823e1283c0d0655dfab466415fc743925e42c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:18Z), 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/QM7281495853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d108ed33d821f3d9847034210a88f89f452f9f77179b801b2591f955841910. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:28:35Z), 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/QM7281495854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bfbf84beef8e8f5753d9506471289c642aadc6d1e98c7187a5e2d444da6da5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM7281495855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5b104f12c073c3bb8ac08b5410314cbaf5e0d52bd7369dcbf20e605ae1f4ac. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM7281495857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bca98b6008a0a42195c7558bb55c50ff43dbd0f47a595c43535500e90cbce08. 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/QM7281495860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46293b491a560baaba8e7f47f885391aeeb69b91a1d63328092e144b1fcdb69f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM7281495861.
Testify (As Featured In "Big George Foreman") (Original Motion Picture Soundtrack)