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 0xbd3c7ece369ae5ec62b5c02f43156fd5da82337f6a043385987e7423574d6742. 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/89498c81-74df-4453-9606-e9772d535d0e.json and https://artists.proofprofile.net/proofs/artist/89498c81-74df-4453-9606-e9772d535d0e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ân Tình Sang Trang Remix (Producer Hiếu Béo Remix)
Nếu Em Không Về (Producer Hiếu Béo Remix)
Em Có Yêu Anh Không V2 Remix (Producer Hiếu Béo Remix)
Hôm Nay Em Cưới Rồi Remix (Producer Hiếu Béo Remix)
Thần Thoại V2 Remix (Producer Hiếu Béo Remix)
Ly Nhân Sầu Remix (Producer Hiếu Béo Remix)
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 0x059df522aedb24bccbb6500ea9c0d8f9946bbd4dd1928be18c7cb21a047cc2e4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6N22488645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fd34cf7d5c28908eca923f20b707cf5d4065d725782eca9b1f515663eb2e10. 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/QM6P42423366.