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 0xfb75f803245d9a97a3c9a97e76c9e949d1edf2d521e4232a0c2101b16a7b9f25. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/232a00c3-7a2d-42e7-ab73-7214933c1fdc.json and https://artists.proofprofile.net/proofs/artist/232a00c3-7a2d-42e7-ab73-7214933c1fdc.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 0x4189383f8bb8afcf91426ca14908ce632a0db1186aaffa3b85b8ee996f894af8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDW2220481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8de4ba6d24da3fc05ff6c1495fe4d4a963425761f571d264256d385bd2df761. 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/FRX762383732.
Có Lẽ Bên Nhau Là Sai House Lak (Kaine Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef290ed127b5ef7cd6f3866df7ca8b323f07b4c085fe23715907cea196ecc01c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:40:59Z), 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/QZYHM2504644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39922ca3c04e117d794f2d0cc0b246e136386bea4dd22a94a65d82628ad3764c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJZ2588536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12bb39d6c32080be870ed4e8a3f63271d75e4e879d00b7284eb4d3b0f1ee6de. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARC572405246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9101a87ad45650b4351d19def3b6c5325967d0cc4c50d6b3ec03ec093feb824f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/VNA1M2282539.
Không Biết Phải Làm Sao - Đức Louis Remix
Không Biết Phải Làm Sao (Đức Louis Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc987e391f8cb52ce65593c0f0b1e8a2a06291aaea606adf7d3e0f089a5f1b3. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/VNA1M2284317.
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
Có Lẽ Bên Nhau Là Sai (VuNhann Remix) [Vinahouse]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f76777e5ddd3528992a4111ed927bf24d069afe33aea7da62720f9900d4b02a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/VNA1M2287984.