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 0x1f75dcf0d1855b9343b985826c82ac398426d88494b828c28d721ac473bea381. 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/ba40725f-f2d0-4da5-a7df-7f94ed267b3a.json and https://artists.proofprofile.net/proofs/artist/ba40725f-f2d0-4da5-a7df-7f94ed267b3a.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 0x3a31310406a14c43a71830f0dbc2447c20cde7753bcede3dde0475d0701aeec1. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZ8LD1910714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4b2fbe6f8bd7769db7f223be8d14a0a16952e71dd6659ea79d7f91a9a6c09b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZ8LD1910715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ff9807b556133040a615510eb60c62e0071bc69daaa799cabb02072df8228d. 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/QZ8LD1910722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0fe8e0af2e748f2be2bd98dce34727e2b56f79c5511a87ec7664d6fefceecc. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:46:37Z), 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/QZDA41976738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40710591c44159623f0288ad9fce0cc4329a3f724e5b882fb53749d3858bba4. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/QZFYX1946847.
6To Sentido (Una Vuelta) - Version Tropi
Karol G, Peso Pluma - Qlona ( Rkt Chill )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f9e45d343f97ddbbede5181cb781c33a5c14fa7c412e255e02e5b68c1e49d4. 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/QZDA71921753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892acbf29bf3e11f76be06080bfac93ad4170cde944c562bb5031e933cf66d66. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES61897299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dae5facfa866acdd1e4f47c886946c514cb76f7e310d6b9b5026c192923b5a8. 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/QM6N22395315.