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 0x14d0b15e2360e28c764e838d4b8297973de5d2749a4b9fb2ce739b196bba2312. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bab0eb5-a00c-40ab-ac64-fca8175deaf8.json and https://artists.proofprofile.net/proofs/artist/5bab0eb5-a00c-40ab-ac64-fca8175deaf8.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 0x03e2e964890356217a5273496806fe663b130305251e3509cf45b86a685fdaeb. 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/ESA012295463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885b380f076cf32c789d4b97debeaa17347c24574c7dead86afdc883601c791f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:53:03Z), 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/QZS7J2222969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c00c8a5130271f5748e5ce170d5cf8097e32178663a52f1b779b855c2beaea8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZS7J2260617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a76cfa127032e5b9bad6d8274b0e6d020788b2473da10db773ade3245c11d0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:10Z), 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/QZS7J2279649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e7358c78bf6b6705e9add5ef3cc7f436975488ce7d840fb852e03cf79e5799. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:48:59Z), 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/QZTB52283520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea63335893823c47e1aede8713f6ba896ecc2a24c0b531ea9fef1113e1e2ce8c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHN82381475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceac257e32d74efa84cf7c9869690ac079dd88a928e187a595de9991d58818fc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHN82351604.
آهنگ مست دمبوره بوسه طلب میکنم شیرین آزاده را
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7cbdc23e7798c077c66deacfc920e7871a82e0ed7f660379d649c43eb0ef33. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAIR2415024.
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