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 0x322a84cae1f0bf5b38f27b51a664fd699bf0043739c36c7d01c6aed2b6fe2bb8. 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/8b3c85aa-be8a-4545-be98-380dccf4476f.json and https://artists.proofprofile.net/proofs/artist/8b3c85aa-be8a-4545-be98-380dccf4476f.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 0xdae25ec3b5c8467a4b20e16ba1a04dfaf6e5354f8640b49ba0f7564d908926ad. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:00Z), 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/QZGCD1800796.
Không, Hỡi Anh (Non, Chéri) [Remastered]
Vắng Bóng Người Yêu (Après Toi) [Remastered]
Không Còn Yêu Anh (Je Ne T'aime Plus) [Remastered]
Tất Cả Cho Anh (Vivre Pour Toi, Mourir Pour Toi) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe667940c07c1841c28953bca38deae8278786a2923afd8005ab4cc7b739e7adb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USJ3V1229951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661d785ae8ce08a3bfb68b9f0c176d93e37d4f5da0c336ceba32b0a3881b3b26. 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/USJ3V1229887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435f60ba211a9160e4c6e5190ab4121ac538014cc8b5a76f560d29838fd66cc6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USJ3V1141677.
Những nụ tình xanh (Tous Les Garcons Et Les Filles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8325478920d46ca4e40f7d1dce0173ecbf4249c21a344508048b04190065d1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:36:47Z), 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/VNA0F1766649.
Cuối Cùng Cho Một Tình Yêu (Giáng Ngọc 177)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c02f8eb155369f6d834961f6fb78f9ef224390542f0b5438bd7a1df76c78412. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USJ3V1230068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadff67c0dfabe4490e75d85b1d6924278cbcee9561ed43555af7332bc81ebd7. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USJ3V1230075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7802c8a9d1c55ec5b2aedea5bd2fd09faceac60b35b03386f94edd5ea623d683. 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/USJ3V1230423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddb54a0ae5c598435ba5c9de75a8d1f521dfdb45b3326296a3ac09f48173f78. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZGCD1801389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbed9bc54475781c708b884d20bbd7c4878ae2b2d81edb9b1a6a2a8ebea9228. 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/QZGCD1801390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb283e0efb5d3c9c576439c55a38177dd915812d4e522d636f3203a1ca6fa93ad. 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/QZGCD1801239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fc93edb717ac9471acd32b173216b3fbd6b25c84a59e120690841406542bc9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZGCD1801240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5079ea52945014a36f51deb8d8e60df9e99871244834e6c700732a109985477. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:21Z), 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/QZGCD1801391.
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 0x5b999a7bd1f011182c3d5c2ced16e133bc036c017335ded0fddcdff22c437de0. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/USJ3V1230073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365334ca1f1c885ffa309a05bcbcc021518ce006c841d3efb63b2c75aa214fb5. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USJ3V1230058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb45c33789488aa3e0f0cc974a2ee1fc41a9c7283bfbff210efd55272c0f539. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZGCD1801388.