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 0xd6b863f1f5c3513681e8afb62b75168105ddd0d7a54af9dad8777844387f14e0. 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/03b8b8d4-dd61-41a3-9c10-b942cea7e53e.json and https://artists.proofprofile.net/proofs/artist/03b8b8d4-dd61-41a3-9c10-b942cea7e53e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trả Lại Thanh Xuân Cho Em (Vunhann 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 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 0xa1cc5dd9c1e3b708bcab36d4e8508ccf5c9a40617d687becc3d6fb8b89128f40. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZYHM2500459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8851975f9226d2f775e2049e0f7427fabdb019bd0f149d57946a1f9c57abc8f. 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/QM4TX2561196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491dc8e8fcc9d3276f64c222c1dfff33ff31141e18ff66c31495a0ca00bc5c98. 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/QM4TX2556902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb3fe496aec032bcedf9bbf92804bbe3c3da50f1a177936f8d74b4156e5fd4d. 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/VNA1M2403494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99314619785b6f0319cf20ddd8b56a13c89df4e145ebf9f6310dd8d3906ce886. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/VNA1M2401909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdff730beb353fc72e7ae439cc0b122abd890aa48c3645ba75c1a565d6769924. 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/VNA1M2400953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09d1cb2370aada52c3ff983b7c96be196783471c07463e1e8222289408e99ec. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA1M2400955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9992a812fb2528ae34db7a4949915bcf38d9fbdf2a02848220b5c7a165cace. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2405233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd936b715f384c00c09180f527eb13c9b75f3955aac0313da645fc2d3805de28. 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/VNA1M2400954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b47ce08c4f52f4df6505fee027b97bb05bb98a73da8e9c70a192e2f6371259. 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/VNA0F2405228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10d8a06a87440a80d39071192999b01cbeb13695cbd8d3aa0b9c87e3ae3bdb7. 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/VNA0F2404161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb185736afd9b5c5be2a65affdd38776380f13299c79b58f0f43c87800bb8739c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0F2404164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792c751774b36cea0d5864935e83481c9125865624c142cb8db949d55d716fbb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0F2403368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d7eae15752fa0423c31d447b747444e807eb918df649ac6a4fe58b757d9da2. 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/VNA1M2400433.
Mời Em Về Quê Anh Vùng Cao (VuNhann Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3c63c7308c38d6079cf14a4925b9a3d463726fe62c58edbf54cd534c9c4210. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/VNA1M2400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ff91af135f0a05d1e774657709f82f1d2a548e9602b1f087c4ff2f0f1b4477. 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/VNA2F2402214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3507f456332cb389aa154a020d4206bc6fbd4af3f44d9d127b5c958ffcf7e223. 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/QZYHM2417226.
Có Lẽ Bên Nhau Là Sai (VuNhann Remix) [Vinahouse]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f76777e5ddd3528992a4111ed927bf24d069afe33aea7da62720f9900d4b02a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/VNA1M2287984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c92de4d574d3aea3d8e83f91dfb2a120f2160bd201bb9c09e2e6334af41f96. 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/VNA0F2325327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555b2ac32e9435708eb2901db02bd26e9ef49be8b79439e7b7227097c2c436a2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/VNA0F2319623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f1b19c0545e774039001eeafa0992215b3e317c61ebc374b11859025aa433d. 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/VNA0F2328358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaf6e57a5adf6629147e8209170d5d9fbb8baf950035ad871c3aea231494f37. 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/VNA0F2315339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e1c316b7ca32b4486ea745a9898537c889e66087829decfc411854a25cb676. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F2318711.