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 0x55b77e8f8e1c7ac21a6eafb02aafb137cd6d5a86999fa635165bc6b052f61f1f. 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/d79fb1bc-0c02-44f6-838a-3fe4e0b061ea.json and https://artists.proofprofile.net/proofs/artist/d79fb1bc-0c02-44f6-838a-3fe4e0b061ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mong Một Ngày Em Nhớ Đến Anh (Vinahouse)
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 0x27fb35e17fbd4d9de3e99cb4d8a0e36019be0512694fbc27b07768bf82cc5d8f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/VNA0F2311820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c0340177f504ff1267f2a59e1c66cc83d8643b57bf8f93e35233a387227539. 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/VNA0F2319045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e174ef13bd7d46c65143ecc70eca24873c24b3d3dba6fa9e11a6633e8cb188c. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/VNA0F2319042.
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 0x5f7fc95bb0b38a05e9aef827867c4d1f8114d5197eb5d3b9897791676471c820. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/VNA0F2319043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a84acd71e70ff068bbd81bcd005063f1741c303086608271ebfb6fa6034e626. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/VNA0F2319044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda16035540db65ded74dba1742541ed59b9a9bc5779a6e0dd3ad2f91da00e831. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/VNA0F2319046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa134d07d009ee109b684dd082e1cb3492c2ca20db5fa9b6ebb3529206877a45. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/VNA0F2319047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b694e136dcf135cca4acc5d85610bb3ec3f9e0628970bcd22cdf6ab1be31ee. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/VNA0F2403462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8175e47e6eaf26db4480f7089f9f4639b47d78dfd08724dc72963d0abbb4439a. 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/VNA0F2319041.
Xuân Định Ước Remix - Ngày Năm Mới Đã Đến Ngàn Vạn Xuân Đang Sang Mênh Man
Xuân Định Ước Remix - Lấy Chồng Chưa Năm Nào Cũng Nghe Má Em Cằn Cưa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e937b3e3b074ed1656d5485edb2483fa866d05707bbccb91a5137d5c98e7f16. 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/QZWBE2286133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56aae43d8a214060ba4ee677fe35a92144f929dc738b89ee242402a8953d1a90. 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/QZWBE2286142.
Tết Bình An Remix - Tết Là Tết Sum Vầy Cầu Sung Túc Mọi Nơi Cùng Đón Xuân Về
Tết Bình An Remix - Một Năm Cũ Đã Qua Cùng Nhau Đón Năm Mới Bình An Muôn Nhà
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335d05a50b2295edbc1f94e96e96803f460a3521b1a7f5f95b91f61731856c6b. 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/QZWBE2286060.
Tết Bình An Remix - Hoa Đào Thắm Tươi Hoa Mai Đua Màu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8abc97f1da555e35ed7bb7cfab8c24cfca2ad1e587b81b469fd0f4a8f9adb7. 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/QZWBE2286054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f1ed770676ff42ee94b1c4cb125bc75d0d9e25534a13cb4436443198895eda. 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/QZWBE2286061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5a09bab48b7eafd8eb47f1096f6cca47481bb87d5a594acd3659201a5c4df9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWBE2286018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559c9d92a2adccd67285c78a45d51169b2785a6be804a5bf9e07801ca92ec09a. 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/VNA0F2123016.