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 0x796ed02d5d9bcfad23128c4a08c4758c518180d49f4e6c25cb85a67ab04894a4. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bbec832-287c-4781-8465-0ecb8766f75b.json and https://artists.proofprofile.net/proofs/artist/6bbec832-287c-4781-8465-0ecb8766f75b.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 0xa05d6621347086e36e4c275725d14de6aeedaa3815778551aa165b1259c818d4. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TR0140508590.
Sericiya Budare / Dağlar Başı Duman Olur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a9f3ce2801e0052d5967134ccb91120caf803872be26fc9523fd65d26f48e1. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TR0140508600.
Kürt Remzi, Vol. 5 (Kurdish Folk Music Kürtçe Ağıtlar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e21719742f53baf39660ab7a9b948378c7fa8c1885f264b8ff0b8947e17d1. 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/FR96X2045585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd7761f5ad2bd03f7fb6f42a660234178210624a58d5e9c78b9d54aea093f99. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:55Z), 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/FR96X2045592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d38e73f58b2e80dc4a597e57746a0fc47a5197e76269ec06096dbad8f4d84a. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/TR0141700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa761a621a6b1bff21fa414ba61d33d48636477c0dff8a098c16747f57eaa3c1f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TR0141700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074d9a19115376d9e448d1a07a00f92baaca704bdcd28d8b3fec13c7f3799c21. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TRBMA1801516.