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 0xdfb4ed576ccedbca1849905c56723ff3da7b51f22eecb4bc3e52904d83ffdeee. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d432df3-69cc-47b0-a2a2-896b79a22917.json and https://artists.proofprofile.net/proofs/artist/1d432df3-69cc-47b0-a2a2-896b79a22917.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hương Tình Thân (Hương Vị Tình Thân OST)
Trái Tim Không Ngủ Yên (feat. Hoàng Hải)
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 0x6a17cafdabddcce2f6e7289271bd2d78cf690e32ca54fa19cb7b264eba6bdaf1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/VNA0M1933157.
Bên Em Là Biển Rộng (feat. Dương Edward)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298db76e61219bd30a62966a5987dab50f847eb9926d5688028e86c5981a4128. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/VNA0M1933154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee8828b4cfb8a49642dda946b22673d4ccf225a9546a03b46c49b004ddc2b4c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/VNA0M1933156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a17cafdabddcce2f6e7289271bd2d78cf690e32ca54fa19cb7b264eba6bdaf1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/VNA0M1933157.
Tình Yêu Buông Tha Cho Chúng Ta (Blue Version)
Bonjour Việt Nam (Biển Của Hy Vọng 2022) [feat. Hòa Minzy & Lâm Bảo Ngọc]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab05c0305fc2fd820189baffc033524cfbff74bb7a2cac64cc4bd824a8441c1. 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/VNA0M1929534.
Nơi Ấy Con Tìm Về (Biển Của Hy Vọng 2022) [feat. Lâm Bảo Ngọc]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9493ffdeaf1be3d1304aaa64a57dcdb2e3cb890fbf12aa87ee0adad824b93163. 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/VNA0M1929537.
Thế Là Tết (Biển Của Hy Vọng 2022) [feat. Đức Phúc, Lâm Bảo Ngọc, Tiên Cookie, Hòa Minzy, Isaac & Quân A.P]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522361dafd18c9d653e02cef3f96cdce9f84da20435264aa1845961cfcb51605. 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/VNA0M1929539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9cd1c570172144f2ccf7a759c20f8663847ceca885aeaf5b2c0b97258086cb. 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/VNA0M1929434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da823a37dc47a56e4c3e043c1d51c003ebd74a97c818397a04d4283c2e62928. 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/VNA0R2400049.
REGRET (feat. Quân A.P, Pháp Kiều, Quang Trung, Ali Hoàng Dương & Lâm Bảo Ngọc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687ed6c1776eb271535d61985914cb3e4c506ed143123c7661c8701c343e5ec9. 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/US38Y2418914.
SHH CHỈ TA BIẾT THÔI (feat. Hoàng Hải & Lâm Bảo Ngọc)
BÀI HÁT CỦA CHÚNG TA (OUR SONG VIETNAM), TẬP 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31851b4076625c34a4cc8166ca0d410a5e2dbea051056d9b39a6e7ed2e3ee3c. 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/US38Y2428612.
CHƠI VƠI (feat. Ngọc Anh & Lâm Bảo Ngọc)
BÀI HÁT CỦA CHÚNG TA (OUR SONG VIETNAM), TẬP 13
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3529ba6c94d7778f6bc8964a7dba048b12645ed5082e0a63ee6304e9b21c1f5e. 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/US38Y2431555.
MASHUP LỜI TỎ TÌNH DỄ THƯƠNG 1 & 2 (feat. Hoàng Hải, Mai Tiến Dũng, LyLy & Lâm Bảo Ngọc)
BÀI HÁT CỦA CHÚNG TA (OUR SONG VIETNAM), TẬP 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac117fdc695110e42f318b31ddddee9480cac0e625a7ddb6078b7451e8fc2ef1. 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/US38Y2429347.
Tập 18: The Masked Singer Vietnam All-star Concert 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7101c1466c1d5c2bc082ef3c0fdfda447cc24882c36ee2b4fee4226545216852. 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/US38Y2401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47b165d100d569fb22c4fb5c48e467eff56c2dab8cfa58d6b982bc859c6547d. 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/US38Y2401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f326f96068a11dabf365753334c3ce7cac23c7fbc0cf32ba4d427e9b2c622c. 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/KRF502500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710dad3961070b1b3519e0fc5629cd54da1c9de0e946627eccc21c73e7738660. 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/KRF502500101.