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 0x5239a44ce38142cc3f4b9d0ffd620663676e6c644f3779c22b66999472065e9c. 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/9432263d-682b-4a2c-b85c-57f824ee8155.json and https://artists.proofprofile.net/proofs/artist/9432263d-682b-4a2c-b85c-57f824ee8155.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 0x7960dac9a002bfddffceca9805c272412286eea91b0f55eac56eddd441bfaad5. 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/QMDA72222172.
Kẻ Lang Thang Và Quán Nỗi Buồn/Nhạc Từ Máy Cassette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a65397ea88b008ac590798df8a3029fdfbd82310007bd5d4a0d777d8318bb3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/VNR011019836.
Việt Nam, Đi, Hôn Và Yêu (Monthly Project - July 2016)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f2f1f20ae1e8eb94c889269fbbbc28ab50c3254bf548d44f934051c5791de6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:08:23Z), 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/VNR011040658.
Rất Nhớ Rất Nhớ (OST Tân Dòng Sông Ly Biệt Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef766031c764c8f999c872abe5465a141490acf21139986f2aa42d6952534b5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:00:59Z), 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/VNR011052057.
Cương Thi Hát (Cương Thi Biến Original Soundtrack)
Cảm Ơn Người Đã Rời Xa Tôi - Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7840db251d75a524be291bf8a21cb9b8796a0a36b129842620b5edc0b55cced8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM4TX2467611.
Intro The Classic/Outro Trà, Bánh Và Điệu Valse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75cfb92ad8cd10fef138adf78358a61ec2a3e438f38a6fd145e4e501fa594d1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:48Z), 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/QMFME2236718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45ee96b7d9abe2b488e9c510e438a565d7ec7893a857e60c07e5d764c54eb47. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/VNR011040367.
Hồi Ức Kẻ Sát Nhân [Memoir Of A Murderer]
Mùa Oải Hương Năm Ấy (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f50e9855781c78268d575b3749dfc9be099540e0241e94c779943fff03893ce. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/VNA0M1907474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc018fa7541b09d7e708c96d00e87990f2b9c810e2510a2b3ab804f89b5e322d6. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:01:58Z), 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/VNA0M1929196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b606c2359843ffde8f4fa5251188daf391ff5b4a63503ebe4fad15e840164b9. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:36:37Z), 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/US38Y2419276.
Mashup Khi Người Lớn Cô Đơn - Người Yêu Cũ Có Người Yêu Mới - Live
Không Gian Cảm Xúc (Mùa 2) - Tập 2: Càng Trưởng Thành Càng Cô Đơn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec9c3445fd2a5497fe31a49eb4bf043342349d1d7d5aa0a2f45457fda2af546. 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/VNA2E2310790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596afffb942e20dc402b8d74345b85c7773dd5000f0db74269eee46a8a80c538. 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/FRX282113120.
Trạm 4: Xuân Hạ Thu Đông, rồi lại Xuân 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5306a90e291c6ee063d0f5171e3058ce0c35d591f85deadc73a24db2b582d0. 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/VNA0R2000911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf118cd4456ef249bdad3697b19082ed209c5c7fe352220f22e067f4f2ac86c73. 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/VNA0R2000912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7e623139bbdb98f130be694ea5fa35f00a309338e566b69cc79ac48d7a0371. 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/VNA0R2000917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbf6c5e294476c8678dfed9f1ef4ab3dd4435cf99e6570393b201d56ca76674. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0R2000896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa97134e69aa1cbc412e025452a5149dc6e8fe51bc470ed912f43e0e126794f3. 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/VNA0R2000899.
Anh Có Muốn Chúng Mình Bỏ Nhau - Live Ver. at XHTĐRLX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9284de0797aaff575eb19150c096a8812f001444fac08a7fcfa4a1d42f6ea51. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0R2000901.