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 0xd9ee68bba01c588fde4ac9054f2b9b38cd36ddc13d467564b3857b6992a6cda0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfa83b8b-c00e-46d3-9ae1-1b8a695e617e.json and https://artists.proofprofile.net/proofs/artist/bfa83b8b-c00e-46d3-9ae1-1b8a695e617e.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 0x8d1342606aeef6bab03e45692d91b81013f5e24edb4a567eeec58d1d68f5f1fd. 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/DGA062314700.
Nếu Mà 0 Phải Anh - Teddy Doox & VoVanDuc Remix
Nếu Mà 0 Phải Anh (Teddy Doox & VoVanDuc Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a149a47f6a094cd118a638473e22ffed137ba0f959ea78894826e5cd0aa938. 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/QZDA82302264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd5ef051e39aed3e4c2d93f99cd2fb54484690ed7cfc469dfa6a9703a59d0fc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6J2231461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12843566d41d89264161750cd161dea1d278cbe673690472db3d397d59d2e266. 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/QZES62270205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df5842cca8aa3a9c1e822d8c28bacc95b4b89d68d30f2caa96f7d895308c49. 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/FRX452277387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6ee9c1e5195bf89ae4302e2e89bb945c3b949e272caf8fd0be8bbf4fe62ff2. 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/FRX452277388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67cf3a3130e306f64e25f817ffa5434852274c911bedf90cd660c3e64eb64d0. 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/FRX452277389.
Em Iu - Dustee, Monotape & Teddy Doox Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d59cd3504233ec1f2a4ac30ca3a1d4f0c847c7ad1e6ff8484dc767d29076f39. 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/QM4TX2480737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882137410072fc695b57ced44d1b143566e44abbdec9f017c09ad0a6b3c7c11c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:10:00Z), 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/QM6N22475146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a12f58744cccec2544320ce0ce9c4722bf2313ab7ade32419dfa9f913ea626. 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/SGUM72000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f69d87785dc2ecc4efc4adc1cccd7059ab73b98da6d4d0361443a75244cad5. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/SGUM72000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7079ebed3d1551a39180bd0a65ee5b5d264af999b0e937cbdefaa183989a95e1. 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/SGUM72000226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1342606aeef6bab03e45692d91b81013f5e24edb4a567eeec58d1d68f5f1fd. 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/DGA062314700.
Chỉ Cần Bạn Có Mặt (Ngày Hội Liên Quân 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d269775b3fa40e16ea4533db6a3c8cd76c521dfc4b371630d2ecaa77091444f. 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/QZNJY2428279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b26876551eb2b56af2e566edecaf132f396a9321d2da1b6dfda189f7394df7. 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/FR59R2099318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c1f91e9d8701ad1582d4d5861acca66cedf088693a20548c6d3b7ac31721f9. 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/FR59R2099319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c58bd57103fef1781ca8782f825d196b56a1d1fdd07736fd395963b09ed34e. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/SGUM72000172.
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