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 0x7970b4430bf75f3429fad22e1de2766f858dddf8cbd513a8e699842211a7bc3f. 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/d8b69cd2-76ff-4962-bf0a-9e41e81e1121.json and https://artists.proofprofile.net/proofs/artist/d8b69cd2-76ff-4962-bf0a-9e41e81e1121.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 0x71b7c2e629d10623d9588b37771b951c15e1175b63fc4f807a39455657d9a117. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QMDA72225064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc281201fca7632b0ef97c2fd19b45af3e3710d6d23e2318ff9c0b73957a0acfc. 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/QMDA72225068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d4fd0514c8ba0ad33efec1d688a66297f6f05e13d9ec57f38883a50ace7620. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QM4TX2470487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9378d98f49f94e4b410335ffbf546f9155a3f22b92eea57b63e05ec64e8a7a7. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/VNA0M1907264.
Gai Gia Lam Chieu 3 - The Royal Bride (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0871b18bdcd3f771fea27c891cba8b473008959e15a0ba1e6d053caea4e1ea72. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/VNA0M1907258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bd529d4a8ccdb49cd6ca4394c37b41958a2b5e2d1978dff7dabe59fdf0679d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BGA472013683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c102352b5d376f06beeae02ff254463768c3311a4209ed756161444b89942c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BGA472013694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1c948ae4fc9121e5da0ef4e64b964fe1896f98612b5eb7051ea712e189b152. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/BGA472013934.
Turn Up The Fire (From "Gái Già Lắm Chiêu V")
Gai Gia Lam Chieu V - Camellia Sisters (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b25889ece69ebe3592b0371830a87c545b49e14e36360727bcdea8e1cf2627. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DGA0L2341909.
Đau Em Phải Làm Sao - Trả Lại Em Một Chút Thanh Xuân (Thương Ngày Nắng Về OST)
Hóa Ra Như Vậy Là Yêu (Đừng Nói Khi Yêu OST)
Đến Bên Em (Nhạc Phim Ba Đám Cưới Một Đời Chồng)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f3e4574d51071cbda317cbf070dbe89cc0a4f4ee6078ba9b33519bd109bdf4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA0R2489040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26ecfe3219dd487f508a287446008621d3eda83fbe14b519bb8ab5ac14794ae. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FRX872575312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f0ff595ee4619075ee3cb6c69f712323c4a4a68d280d2dae49fcaf6f4da137. 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/FRX872575313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ab4d652024e6f4b3e92934f1d5b882e005be01d5ab00d06ea8c96eb8ed2814. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR2X42483713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1efdf12ec822f59b0cb241e09d9e9c8de14da67bd184dcec0299360ab56e6. 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/VNA1M2284589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd9804374ea93c058354d916cf45fc2e1b9d2d2203258d070d65d47218629f2. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/VNR011023586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dc4a49aac99a30c6dceabec64874bbf8d6dd383273c40c1bc47696c82edf23. 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/FR10S2510077.
GALA NHẠC VIỆT TẾT 2024 - NĂM MỚI RỰC RỠ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa690beb3abfb5db12f1facd9d5ec80bd82da697775a44d906f558222d1f7b2e. 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/FR10S2458301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ad8645b791ebb95bfd5bc6047b35911f05846f83fc634bd414c62aa036667a. 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/DGA0T2411629.