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 0x3db6e87bb3a6873b6e562efe1f62bb17f59cb8b12616ace0e9a4536568abb590. 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/b82aef3d-708a-4bdd-841e-5b3052ed1882.json and https://artists.proofprofile.net/proofs/artist/b82aef3d-708a-4bdd-841e-5b3052ed1882.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 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 0x866e0a2bdbdbbd727eb1f0b2eab8d8a99fdb1edc5939791f5045e9961cce2425. 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/VNA0F2303217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed90f239121fbfd6e91c8d7fb029f8b5525e0f7032934cbfd8c44262c4bb50d2. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/VNA0F2403746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a06f9fbd251c8ada17138fb416f989bdc09e76006e4f6ab6a5cb8176b33a14. 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/VNA0F2403758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338f0811c81943159fb0e9cdaccdfead7cea22bd8fc3afbc1e50ba7d45ffb13e. 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/VNA0F2403759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d0aa8bc13f68679b20a354c948c8692a40bc5dfb3a4feece9dce882e5db7b6. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/VNA0F2403329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e9e4b5013af010918d93eac527edab7b7a571ba6d1a8af22b2b396047a4bce. 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/VNA0F2403326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470999062665541764fa52a0309a86cacfefdae082255734d5d163aa767db35b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/VNA0F2403325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb80cd87ce524922cb47145f34af5148684bf93b54faa35e895930f8cdb784e. 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/VNA0R2400896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d620070b43ba9b7eea579ed264099ba9ef0e6fd98ce0d4278af895f084f42a. 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/QM7282491333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb407e814d84669fd4791af84fae4ce534bbfa8def9afd6c08961063e6d975b0. 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/VNA0R2400633.
Tình Duyên Đứt Đoạn x QV Remix (EDM REMIX)
TÌNH DUYÊN ĐỨT ĐOẠN - NO MEDIA REMIX (VINAHOUSE REMIX)
TÌNH DUYÊN ĐỨT ĐOẠN (HM REMIX) [VINAHOUSE REMIX]
TÌNH DUYÊN ĐỨT ĐOẠN (HM REMIX) [PROGHOUSE REMIX]
TÌNH DUYÊN ĐỨT ĐOẠN (HM REMIX) [EDM REMIX]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061ecf72a3bdd69b1abc5b577e74f8859bfadb2cc9d27871d0cccc2bf280343c. 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/QM6P42478301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c670592029d3ec4593b2cb9238e5eef4c8954b2038544473779c6bf2d9d2f67. 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/QM6P42478317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5a0429a6a1f5832b7c41d3dd51d79f0e051f17ddd988e9e33e91a81064cb25. 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/QM6P42478320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c1847f5f5e3a2735228aa2cc9dc387e8467611d6fe256e956b33f08eacc1b2. 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/VNA1M2288890.
Mộng Hoa Sim x QV Remix (PROGHOUSE REMIX)
MỘNG HOA SIM (HM REMIX) [PROGHOUSE REMIX]
CÔ GÁI À EM ĐỪNG KHÓC NỮA (HM REMIX) [PROGHOUSE REMIX]
CO GAI A DUNG KHOC NUA (KENR REMIX) [VINAHOUSE REMIX]
Kiếp Sau Vẫn Muốn Lập Gia Đình Với Anh (House Lak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fd97955f947822badb5d77d03e6805da7886f65276d895559517d99cfcab8a. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZYHM2416887.
Kiếp Sau Vẫn Muốn Lập Gia Đình Với Anh (ZZ Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b51778798abac7b8b663295f1a8877d440465471144309a33be9410c15d99a. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZYHM2416888.
MỘNG HOA SIM (HM REMIX) [VINAHOUSE REMIX]
KIEP SAU VAN MON LAP GIA DINH VOI ANH (KENR REMIX) [VINAHOUSE REMIX]
CHÀNG LÀ TÌNH DUYÊN ĐẸP NHẤT ĐỜI TA x QV REMIX (EDM REMIX)
CHÀNG LÀ TÌNH DUYÊN ĐẸP NHẤT ĐỜI TA - DUCK REMIX (VINAHOUSE REMIX)
CHÀNG LÀ TÌNH DUYÊN ĐẸP NHẤT ĐỜI TA ( ELY REMIX ) [VINAHOUSE REMIX]
ANH LÀ QUÁ KHỨ KHÔNG THỂ QUÊN (HM REMIX) [VINAHOUSE REMIX]
ANH LÀ QUÁ KHỨ KHÔNG THỂ QUÊN (HM REMIX) [PROGHOUSE REMIX]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f120e874d96e6a4b9bbe7c406b7c2b829b6b028df0c38d760ade861b9973d3. 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/QM6N22452442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b1b2b3422f1ce158e28cf1d17146eb74793f14e481160d639375a5b83250d1. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QM6N22452441.
KIẾP SAU VẪN MUỐN LẬP GIA ĐÌNH VỚI EM - DUCK REMIX (PROGHOUSE REMIX)
CHÀNG LÀ TÌNH DUYÊN ĐẸP NHẤT ĐỜI TA - DUCK REMIX (PROGHOUSE REMIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34e0a3904bdfc4d0a73b2fc28cd4965036be343c47da0628161ce5705e4f613. 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/VNA0F2303228.