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 0xc451198908f0c885a0f9afa36f3f0222e082eedf2609023cb7a247dd05daa38f. 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/611be46e-4765-4b65-b44d-af67d9be1f57.json and https://artists.proofprofile.net/proofs/artist/611be46e-4765-4b65-b44d-af67d9be1f57.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 0xbe1610e1f52d600399ee32d66a66376e49532e5d1dc10f1785542cb1f3615320. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM7282450540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a48f6a72a703296bfedfe0c6900bc8b60a2a145da83460e72d6a48e911d09. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM7282473376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0a5497dca88fc1d7c85bb8d8d274bc4c2e404b4d5663cf99c557d011717d8a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM7282473375.
Bắt Đầu Những Dở Dang Trong Xế Tàn (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968ec7a9478ef9432e5abd9765406f1e5124182f868bda1e155b30654e039690. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM7282473398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098022f40d506d49abd8a9ba383237a5b8ecf3aa7ea855ad21d2b3ef6388765c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM7282473401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1610e1f52d600399ee32d66a66376e49532e5d1dc10f1785542cb1f3615320. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/QM7282450540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd99e192afa12b3d4083cd30d2dfc0e11e2aa32db9d17a65eac5f62f5223a38c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TW2361376.
Về Nhà Thôi (feat. Hydra, Phạm Minh Thành & Hưng Cacao)
Hữu Duyên Thiên Lý Năng Tương Ngộ (Dứa Remix)