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 0x8b3d194593fbd3c54c2506234fc7c1fc6582f1a0a8208e900d4738fb5a3c636a. 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/af6768bd-6d36-4cfa-b5fb-431ee76d0609.json and https://artists.proofprofile.net/proofs/artist/af6768bd-6d36-4cfa-b5fb-431ee76d0609.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tuyệt Đỉnh Song Ca Bolero Hay Nhất - Lại Nhớ Người Yêu
Tuyệt Phẩm Bolero Mới Nhất Của Thiên Quang Và Quỳnh Trang
Tuyệt Phẩm Bolero 2017 - Cặp Đôi Vàng Thiên Quang Và Quỳnh Trang
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 0x2464910b01e9bdd355a32923f0b5e9d35427875dbbbed24ca4960184c75c0035. 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/VNA0F2021022.
Liên Khúc Bạc Trắng Lửa Hồng - Anh Hãy Về Đi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd69e8e808a3e9cc20abc3a8871bb929261adbeb78f0b9041241446bd093147e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/VNA0F2021031.
Liên Khúc Gió Về Miền Xuôi - Nhớ Nhau Hoài
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020d50bbf58b115ce984df0b86cb49245a142255bbc1620b698f3b884105c675. 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/VNA0F2020982.
Liên Khúc Người Thương Kẻ Nhớ - Sao Lòng Còn Thương
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4003685a2f4aa4a1bc148d0f32e4d70adb919fb10ffe9f541c7da25fd5823f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/VNA0F2020983.
Liên Khúc Đoạn Tuyệt - Xin Em Đừng Khóc Vu Quy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5bb497088d364556bb9c8cd6deb09109a5d5150cf1611f6fb3b8d4e494d39c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/VNA0F2020984.
Liên Khúc Về Đâu Mái Tóc Người Thương - Thiệp Hồng Báo Tin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059209b999b2061ab94422d996637e45a44133e2d9f60b6e47eb869edaead819. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/VNA0F2020985.
Liên Khúc Tình Ngăn Đôi Bờ - Làm Dâu Xứ Lạ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc72c7a9769f60464458aefaf286796ccb6c7740c5f605fbfbee04757754ae2c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:27:55Z), 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/VNA0F2021016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b5f09f92573ba66de755d9a95e773bda3cd77db27c64a78fde56889acbd794. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/VNA0F2021018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81e7eb8e55d7fb6531d1a5cbe7ee45b9c47ddc6c1e3e2b8f13edcd02b6c346c. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/VNA0F2021020.
Liên Khúc Tình Nghèo Có Nhau - Ước Mộng Đôi Ta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d794d38880928b906ec677768ca8bfd45bffacb56264fa4e61d762588b3343. 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/VNA0F2021039.
Liên Khúc Sau Lần Hẹn Cuối - Người Đã Như Mơ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd7df6abedebdafd3372f7ad4cad2ac21377fdc680cc18afbf757f28f143d2f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/VNA0F2021037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fa0a8a89db1138bf30edbafdd88c1f70d73acce8ee4b000bc9cdca52205f89. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/VNA0F2021038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b2e95c4b9583552b718fbc53c3a5a2c6b003e35973c44811a3708dbba02a3e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/VNA0F2021040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1072e12ae804390e7614a422e14d66a7fa9331e2dd8ac9c2c6fbc048db4a9f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:27:06Z), 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/VNA0F2021041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f07e9b43705a508a9d6c7727f450d4cc5cb90be14925f1c16f7e58611603a4. 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/VNA0F2021043.