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 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 0xce305b551a23684884fc2ea9f4e0cb5b8f2c39a1943919857d52bfb5dc112557. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed59366a-f982-4b59-b066-ff9f61bc2e5c.json and https://artists.proofprofile.net/proofs/artist/ed59366a-f982-4b59-b066-ff9f61bc2e5c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Những sáng tác hay nhất của Hamlet Trương
Tuyển Tập Nhạc Buồn Hay Nhất Hamlet Trương
Hôm Nay Người Ta Nói Chia Tay (Acoustic Ver)
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 0xa22a97b3eb38f27d4f35b937ac50af7cbead292988c3ead60c612c34114b0322. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1902747 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579b27f16b95acdcc06e40500db4e159fe02f2a8234db272675ef83d028d9828. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1902762 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b85e3e297aa5d6712c44a3dacffa219015df159e7250335346e6608f8b50ad. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1902780 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9d59daf5ae8e70664d4dac2982604a48434878f88e30b48a723eea53307d05. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1902785 — a six-check JSON result.
Thiệp Hồng Anh Viết Tên Em (Vì Yêu Mà Hát)
Em ngủ chưa ngày mai em có nghe tin nhắn không
Mệt Rồi Thì Về Với Mẹ Nghen Con (feat. Hồng Trang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6eca6731e6a16b2a8fb2ada2b33ab2ad7f820e0731402837467a4a78fc2add. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1914997 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa242662dfc5e9532b9ca4e5552c4c3e09e47ebc97be9673575fe0b01b2b2cecc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1922565 — a six-check JSON result.
Tình Yêu Đôi Lúc Chỉ Là Chuyện Của Một Người
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b984cae8ed6d4c93e61e1034f13bb470c6e7c9c82cf73b9390b44264928d2a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2240435 — a six-check JSON result.
Luật Cho Người Thay Thế (From "Luật Cho Người Thay Thế")
Luật Cho Người Thay Thế (Original Soundtrack From "Luật Cho Người Thay Thế")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a8b426bfe1461d559f30b7f70984b8293c8712d6e8a3b6d6f7abdd8da1ce6e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2319218 — a six-check JSON result.
Hamlet Trương: The Musical Soulmates, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc48fd1af2f3c6acd9bfe5a8f7ef2699f19b45caaf0f7f4255eb40cc535134aa. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA052457115 — a six-check JSON result.
như vừa hôm qua (relaxing piano version)
Mashup Khi Người Lớn Cô Đơn - Người Yêu Cũ Có Người Yêu Mới - Live
Không Gian Cảm Xúc (Mùa 2) - Tập 2: Càng Trưởng Thành Càng Cô Đơn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec9c3445fd2a5497fe31a49eb4bf043342349d1d7d5aa0a2f45457fda2af546. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA2E2310790 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57f273777c99540d60ec0ebc0cd0df4b95ce9a4a86f700d397c490e50515843. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1937674 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b33315572c6afcc44c8ceee43ad4ba3806f6737b318d4236232cb0311b4656. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1937675 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464eb74101e61ceb5e156eed30b8413a28cb375dd8fb3625f0565de46c293ba4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1937676 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c9ef5cb26eafa9a092755b5aa4c1377a5b3607007d1643459b7ec4463a6ad1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1937677 — a six-check JSON result.