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 0x75e2f10942d7b7bdcc14154aac263f337d18b794d16ed4d7a6aee8dea85f23a5. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bab63134-cf95-4f30-85f5-4f2f0a58fbd3.json and https://artists.proofprofile.net/proofs/artist/bab63134-cf95-4f30-85f5-4f2f0a58fbd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cậu Ấm, Cô Chén (feat. Quang Anh Rhyder & dubbie) - Remix
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 0xdf1a86eca7370fcc0d19ea6acd2fe330812145ab275e6ca7c72790b30dc662f4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US38Y2415216.
Anh Là Ai? Ver 2 (feat. Dick, DT Tập Rap & UMIE) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978c8e0ee6dab5bd4b9f174f569c89c80c33040215c8b9146404db1cf3786259. 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/US38Y2415219.
Anh Là Ai? (feat. Dick, DT Tập Rap & UMIE) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8630ed12a400a9e2cebdc5ce898d97f080e0faf31ecc32295d9c0ad4761953eb. 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/US38Y2415220.
Khi Cơn Mơ Dần Phai (feat. Tez & Myra Trần) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb6803aad2453884816927be4b67e4a7f87cb3f6f7483b52f7e8826a1a4d905. 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/US38Y2415232.
Vành Khuyên Nhỏ (feat. Liu Grace) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f905130e384c2d510c2b49d61b045adc03fda5ed4acee9332f41dd7e6b7d24. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US38Y2415233.
Để Anh Một Mình (feat. Quang Anh Rhyder) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68fe3e344c45ce5a9afc61893d40dfcdd6fd3e80ad2c4c69082b3dca33842fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US38Y2415234.
Từ Chối Hiểu (feat. Quang Anh Rhyder) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6436e4c3353066fd7d6ffce20582d862f47b15b15baf4bf44d68283f00c016ca. 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/US38Y2415238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f231eed50fdee5f152af8b24fec4a778a3f1d927026bb5bb7d8c5404431ab8. 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/US38Y2415241.
Việt Nam Muôn Đời (feat. Liu Grace, Mikelodic & Thai VG) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bff3f5ff17221f4e567115111f43d383b00296e02e3e63fd331c416a62c2e0. 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/US38Y2415240.
Baby Gọi Cho Anh (feat. CAPTAIN & UMIE) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f8c07cdc49aad12f6d8fd8a22fcf258abc4cd058d88526d89c712fa3d5eba9. 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/US38Y2415218.
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
Yêu Hay Không Yêu (feat. Tọi & Hydra) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f02fa97f1cb41356d5afa95c024a390c3244826cb4bebeea0578c6a5baef578. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US38Y2415222.
Nơi Ta Sống (feat. Long Nón Lá & Mikelodic) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656dbcdd356b8307aab5e385993550673735a4778843066b37e90a26fd38e6cb. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/US38Y2415230.
Bỏ Thế Nào (feat. Tez & gung0cay) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e6219455fcedd238e953d2e90824ee0d68dca29472dd09de4ded7d12e738ad. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/US38Y2415229.
Anh Không Cố Ý (feat. Limitlxss & Ogenus) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aaddfacf9ec8530b0a65cab39761ff60552eac418d0120941b8c32610d7b09. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US38Y2415231.
Hạt Gạo Việt Nam (feat. Double2T, Lor & Mây Bae) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed71649dfca6f46b19dc885c527f9ec48187ac7fa848e1f43242ec940aa9b04. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/US38Y2415236.
VỀ QUÊ (feat. Mikelodic & Đặng Thái Bình) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ba99765802e4c49a6a0c6c011f4b6331eb17d7a6352c238fbd6d9591c091f8. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/US38Y2415237.
Kéo Em Về Làm Vợ (feat. Double2T) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2323e8103441b52cf886fbd8e215bf6059d1e2f4ab21cba54fe42780df3bf1. 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/US38Y2415239.