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 0xc7a492619d13db5a1d691f789b373639daffae5a146ef69c19f5234efd093c0b. 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/8826b1b8-f607-4938-b3e6-b2d09d057ad1.json and https://artists.proofprofile.net/proofs/artist/8826b1b8-f607-4938-b3e6-b2d09d057ad1.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 0xc5380291cf4c27f8dbc1e1ccc52e7db5c8d30b233e2e1c60c26d3af2ee9f695f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GXBAV2242236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f565ee4ca548f0ba95f8b83e160f9c4961fba06f3cfe84cf58d583e219f28ec. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GXD7V2245281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642e9b4024dcf29b6c5080c248f13874ae01fc26af3e9eefa165badf2bf00e25. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:50:53Z), 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/GXBAV2242237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16221951557a4f60e60b5a05166d3b85be9d56c931f1969cb9ec30aadda06bf5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GXD7V2263483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588a4c38670fbc9134b5c2c8b7de27f519ef6caac71b5736ae70e2d29a9c34c4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GXD7V2232668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4f488664a20e16e66e91a77fe9fe951476b87a2c048a6e84e91f3e4780604a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXD7V2469603.
Calambres en la pepitilla - Reggaetón 2 Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f929a4d919ae6307eec44c1bae0653eae923018076add234c16ceaba3ef975. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXBAV2550535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f8a3bcd6425f3edc4ac94cb766a6e30bf8bba5acc299c028be2debebea81d3. 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/GXBAV2183516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf978bc5546799ff6066c22ed6ed662ba446d9676d7985fba881750439c2f8d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXBAV2087304.