1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf8e4c973878a4aa2c938757edfc05dc71a309645c83778f1842f9bab0051660d. 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/1530b495-9e09-456b-959b-cf763179c5ce.json and https://artists.proofprofile.net/proofs/artist/1530b495-9e09-456b-959b-cf763179c5ce.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 → block OTSBitcoinBlock must exist at that height 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 0x7bc8b9bf7a1937c8bb91723d1ce7f6af7b32216d324f532feb787cf12b96b650. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/VNA0F2110818.
Khi Nào (Remix) - OST Hoàn Châu Cách Cách
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18059d4223f49b5dd41bc3c3d491d1a25824e03332ea869a97793d1d455fb34. 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/VNA0F2113318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8014033e2b779d552b423210ac0b5c2c24e7bb6f9d8a55558f302dfaf57ce613. 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/VNA0F2121699.
Đố Em Kiếm Ai Yêu Em Như Anh (Remix Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dbea950877e3312a09bd446ef6b2ca38bdeb138a29dbb64903b19e4769e075. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:42Z), 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/VNA0F2308773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4bd02e01d1856b458d5be9d900f2c0ac70ec610eb4b298baca7d1e18b75c92. 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/VNA0F2308400.
Lỗi Tại Mưa x Ảo Ảnh Remix (ft Vicky Nhung)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c3553b62e4123f4e5e571c470cb6d102c28e47a1c60ef2b5d8b606f496d4a5. 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/VNA0F2322652.
Thương Một Người Mất Cả Tương Lai Ver 2 (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b95618da161cf42752b33d50ae6e9e47b862add7c9dd9c965d9d628effeefda. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/VNA0F2403372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f963d34eea8a6f84b88439ef4d82166a374536eeba119e34d6d050dc67ca67a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZYHM2500915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849dab636b887aebaea7a39fdb5559bf5c01c1d915560c018e66eaa464776e06. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZYHM2501341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38207eed5718841ef0a20a658880a0363758e9feec28c9d7bd46461486ac97ff. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/VNA0F2410837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc976919c3cc059bfa1be772f41e9dfd855305880280748e8df115833f01465. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZYHM2501383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8e08df3243259c932cf32ee40fb86a6740993ddce120b9b78d974ebb428c11. 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/QZYHM2502644.