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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ce635a2c0479735aba9b84bd88b9da2e62f96b5fd3fda765c318e0d8d09674. 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/20ba85cf-6799-441b-9699-c496580fa601.json and https://artists.proofprofile.net/proofs/artist/20ba85cf-6799-441b-9699-c496580fa601.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lại Về Bên Nhau (All Is Found - Frozen 2 OST)
Ngỡ Như Giấc Mơ Cover - Nguyễn Duyên Quỳnh (Cover Version)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c63cd8a4ee21fd67e1de2edfe7598e3bbf2538e88b57274f86796b6c344868. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/DGA072372359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28fddfbbfeaf8fdc3e51c674a1fd6216ced46c5cc7c35b54937c3cea75c5f60. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FRX762549521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0339c426aa2a68bf27985d25cd0d706a9b59192bc82e0b7a23ae9bad928cdc. 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/FRX872546548.
Là Người Việt Nam (Hoàng Anh x Mimilee Remix Beat)
Là Người Việt Nam (Hoàng Anh x Mimilee Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5578e8aa15a6e26629ae17a88be5e041e88f1ff40ab885fdb8e2ecd803c6d890. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:28:39Z), 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/DGA052537245.