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 0x95eaf3a7c51f068d1446d6bef95b2cbe5e128697c6b857193f2d799e87acb0df. 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/10259714-7b5e-4aad-9feb-8917e948ca57.json and https://artists.proofprofile.net/proofs/artist/10259714-7b5e-4aad-9feb-8917e948ca57.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 0xfd15b6e20921682b8d583cf3443286c9f6949264f654b3e3b3f367948cea7ea4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX281908318.
Vì Anh Cần Em (This Love Cover) - Phúc Acoustic 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f169cf2de09d73df787e3a11256a7125bfa7391b8b391c1b5faf4812ec32bd. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRX281908319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dbd7c0a24e4eaf1f88129cb31320727cda41c1fa73d968d012f8b204b7a0a7. 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/FRX281918129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d4fba329537f5d0ded60f3884f769fa0277089fba039510ea0d77262813443. 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/FRX281961548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa078b2ab87b951375e61c0ac32ddda683b0e0b2b7a4af5a62f8864d499de93b3. 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/VNA0M1846397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6764601db28b0c7a84510fc42de3dd6f034dab08cf2ec2ebd15923d6412fc8d5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:34Z), 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/VNA0M1846403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0cd0410ed36937c48c92fad8eb1849e99eec0807827530ddf2bdaef3cbf583. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/VNA0M1846404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd377ac5c64f31d04f683bb036329a7530431d62bea4214ff17d3978dc0e7162a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/VNA0M1846405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131bd60801366ef56e1491d559265b899709da0a70be73c0ba54182fb7d8de01. 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/VNA0M1846408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6764601db28b0c7a84510fc42de3dd6f034dab08cf2ec2ebd15923d6412fc8d5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/VNA0M1846403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0cd0410ed36937c48c92fad8eb1849e99eec0807827530ddf2bdaef3cbf583. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:43:38Z), 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/VNA0M1846404.
Có Một Người Vẫn Thương (feat. Nguyễn Hải Yến)
Là Tất Cả Hoặc Đừng Là Gì Cả (feat. Tùng Nguyễn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eab1f713977f6ac07182b31262fad1306d0e036097cf101c38270b9194083fd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/VNA0M1846394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6e76c39a4799b959a7c0162e07eaa5b96d948a8f00706154b0a34772d43a7c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/VNA0M1907381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7635e969f5799b8b1e07309e25b7bb748894d706135da76b8eac87cb895d0816. 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/QMFME2247698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f2ad0dde238b3363ede51f430e085cc15170e26fe8f7c9f9974e4b8edb4233. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:31:31Z), 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/VNR011129182.
Sài Gòn Yếu Đuối Biết Dựa Vào Ai (Lofi Version)
Ước Có Người Bên Tôi Mỗi Khi Buồn (Lofi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0608220d80be240dfb8091595ef1b3636326e8ed5c19e5499deeedf4261a7a. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:21:14Z), 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/VNA0M1921327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83b18314de810682a4ec5d48a5e9be3a2da7ce42bd87fa5bc453d3c73db85dd. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FRX282274273.
Mashup Kỳ Vọng Sai Lầm - Thay Tâm Đổi Lòng
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e62b08a16cd00d9b9e1e9ce06e8ae77535e33665bb56e17db6f162c384889f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:23:30Z), 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/QMFME2294347.
l'vavie (là vì anh vẫn yêu em) [Live At Lululola Show]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e03f9c8907a523bd5863eaa7f7a83fabceada7b46e65cf6972db2465bac3cf. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QM6N22369705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f2369f21aeab11bbe8c4d164634b7e42d29e4533dcdc5a6aa9988ac0de3716. 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/FRX762327001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f2369f21aeab11bbe8c4d164634b7e42d29e4533dcdc5a6aa9988ac0de3716. 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/FRX762327001.
Anh Không Quan Trọng Nữa (Remix Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff9c64bd82769cab0ed076064e01024d30982ffd81015d4b6dfe753494d11f8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:17Z), 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/DGA052334958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184cc448df7a2cbc4befecbb82bf4d2794bcdfb2de93bd706b35e4367e417266. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DGA092380251.
The Mashup: Đã Sai Từ Lúc Đầu / Những Tiếng Thở Dài / Hoa Nở Vô Thường
Dưới Bóng Bình Yên (Original Soundtrack from "Dưới Bóng Bình Yên")
Dưới Bóng Bình Yên (From "Dưới Bóng Bình Yên")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32b7051d032fa9f6334742135c700c58dff19119af65617015365357a974f23. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/VNA0M1933937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44559368a4633753954583501c8e0836ab48270731a3d4dd719f9537164e627a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/VNA0M1934638.
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 0xbd5c399d718fa1aac088f62c3a75f64cc3f9348ee798b16e67a6e2a7e36d0a51. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/VNA0M1936454.
Hãy Để Anh Yêu Em Lần Nữa - Solo Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6b55391f4dd0220b32ee94c238cc8c32fca0ce5ce1ec7e027c0806c9491cc5. 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/VNA0M1936455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5276b4114730f6d4991f19dda09f52a6191861ac7ac454746e702ed2bab55eb. 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/ARC572404339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2761e90553813d6ae1c2b783f13a43c0fe93f6e573b73fa125f134267f72311. 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/DGA0T2422249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9f9539460be49d47ef3b897c6e32f7267940b7227de7ee3f540d23321278ea. 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/VNA0R2001032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5276b4114730f6d4991f19dda09f52a6191861ac7ac454746e702ed2bab55eb. 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/ARC572404339.
Liên Khúc: Một Năm Đã Qua - Tết Trong Tâm Hồn
Gala Nhạc Việt: GreaTET - Thập Kỷ Nhạc Xuân
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a850fd1c5a53276774b3b44ec846afba6ec478932a6fd2960dc6a9ba93172ce. 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/DGA092207998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97eb7b6d1b031c2281936265a6589ffe5e5e68b5ccb15205d73417b320b9f263. 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/VNA0M1912058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4eb9044978a2e3cc6ad4561837a32350c200c84f45fe434a94085d0fdff514. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/VNA1M2223955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f88240a38877cd51fd82e801706d393b0e9b864f6f16030754a8dfe2212207. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/VNA0R2001031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac28b64f2c2089fe118e0cc2d21264414ae02f350955d575bc830e72ddb6af07. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR10S2267425.