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 0x0406d9ee75517acd564d645306f14cd958000f2d414d29ecd0ea689f7aa6625b. 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/1f3fbfdc-038c-4a7d-956c-f40ffe3bf353.json and https://artists.proofprofile.net/proofs/artist/1f3fbfdc-038c-4a7d-956c-f40ffe3bf353.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 0x625cf52b0e048b3684cd2b473c448161d93fcd1332cc0e6796e0116cfe1fdc06. 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/FRX872167357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d23c783c5b7d2d02189b962dde5ff02c47328032e947194091c61bfda1f76b9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR2X42183118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1438f32c4bec9697e6988df41041b6a710b8382767b43ba007a30150a21ba808. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:59:33Z), 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/FRX872167356.
Đau Thương Giúp Ta Trưởng Thành Hơn (Cover)
Đã Say Vì Em (Original Soundtrack From "Yêu Trước Ngày Cưới")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7363eb5c203ae8be306e736e800a1436673c1ceda45c241956178b6f6ab5ff23. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/FR59R2465936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaedcb97c63b43041077b254a3d64109d3033309888c9bee4d3376b85af3671. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DGA0R2460159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d06ef6207a88d592eda5056f3133f62d61bb54325cc04a6d30c52e5da0cefab. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA052586662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5eefe47f6785bbf35e1441d720b9ff6c39cd1346513c05a45028aca5f19c44. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DGA062566528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870ecb7cc70dfda90a80b1a0d8af783c1d86c101ba3ac5de3dd4d64d3723915e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VNA1M2201235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e054e7c7eba1e67fa083436009a5f0d1e549a0d71d0a1a02145b7d6842d7f9f. 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/VNA1M2201013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5107493cf5c78aebe8c963cddd8a991417a309497863f2a97607c61e8b5c999. 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/VNA0R2001033.
CỨ ĐỂ ANH TA RỜI ĐI (feat. Dương Domic, Quang Hùng MasterD, Lou Hoàng, Song Luân & Bảo Anh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475669b29735199aa16779d841cf55a61ecfa69e9c1d15c9d6b3d8a33b6a5aed. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US38Y2418916.