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 0xd05eb6b9de02e0ef350197a1918f2c8e41da47c9ddcd26e9b3d23c3f55142b28. 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/85dc4d52-24df-4efd-b025-e6c4ac0558aa.json and https://artists.proofprofile.net/proofs/artist/85dc4d52-24df-4efd-b025-e6c4ac0558aa.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 0xc272699f4837f76c406a875a279b70af44164c540f8fef964e0d375cdefb679e. 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/SE6A92306799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991b6704709ccf79500cb96e816e4c0e77318fae613d7202c886d22f7034de2. 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/SE6XX2361889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfddf106652c5da454689e20f852dc34a501604a8342f1e9903af6bcbfb36c92. 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/SE66N2344250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d2b151f15b152bc007716048680ac27c4da884af89c1bd0958bc6ebb6e766c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6QE2387878.
Gimmie! Gimmie! Gimmie! (A man after midnight)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f1788cff360c90e9ad5cfb5946d18c2ad052cc17e56ad1c2d48769306cdea0. 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/SE6XW2319357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2349bbe9559f25d00d841777b20d0583288f7f8cc7ac8f1ef7228543a5fcfaad. 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/SE6XW2337723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a83bed665cf4be9530d3c5fc3da6e70d5d845097a543e23fcd752b1588ab9a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE62M2335964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac6ecaad3425408b11e4ec62c4e6a8a23772fa501a20892c23d0033247ae6d3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMEM2377978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c36db9b8935d51ec955b91665253d33951ddffe6b231672d91cee4ea22d194. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6I32482657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743a67c5f98b7547d57355693a1ba3de9dc6da3c2cabf2bcc55150f0db47bb6f. 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/SE5XG2405670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a0d512a5e668065df41f7517d0775bdd7759a6e5e6ab8416f725d8c1854892. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5XG2405658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c36db9b8935d51ec955b91665253d33951ddffe6b231672d91cee4ea22d194. 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/SE6I32482657.