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 0x6dc065e96c703ab53f6c622006580a1a85549ec6f5d41443f01d3a4ff17499b8. 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/b2254c11-148a-4a32-81ad-dd8ed2489ad2.json and https://artists.proofprofile.net/proofs/artist/b2254c11-148a-4a32-81ad-dd8ed2489ad2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ballin in Fendi (feat. Famous Dex & Sfera Ebbasta)
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 0x7c1ba67831ad7c41aea785d1870bd015601ba0c34778c3debe1a61e715f92c5e. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/CA5KR1982657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454847acdb313cd0f095a4961a4c4550603bcac3c7eb3e63e9893ad53d3114fb. 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/QZES62130061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d9dd88490e564aa6baa389b1633915e8cfb0690192e873be23f68a8858846c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:06:16Z), 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/QZHN82178845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867ae2b5a5a9aa61d3bb1c0a7669a5d55e686af9c5f07e1e9e6efe65b745f538. 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/QM42K2200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159fc1485a34b412adae14704973e14282db6279da84d22639e8ff5b9bd7cebf. 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/QZTB32223192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef4dbcd3a58ae9b9ccdf6ab3b9d5e9392534f67d42ed11f2973cb5b0ddee3f0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USA2P2469829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28feb5c0ab5380b9d9a35d5a7ded062f386b3f613b625c801296cd02caa16ffa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZAKB2478133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b72c236c4e638f598af169cb06e1e18a0788edb8fb24a70ac3d5bbf367f3a7a. 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/USAEA8169077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2657488d4aa9c0252b06661392ce5d78132b177a71d68c90f10b97e2db2ccfb7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWS2138029.