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 0xe90942a4b3f276ce94b0b1989a1ff74887bcf753d0052d3369bfbf762d2fa9a5. 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/100d7210-5238-406e-8bf2-5a7bf77dc5e9.json and https://artists.proofprofile.net/proofs/artist/100d7210-5238-406e-8bf2-5a7bf77dc5e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Những Ca Khúc Nhạc Trẻ Hay Nhất Của Lâm Chấn Huy (CD2)
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 0xc98b262cd07604efb8512f779d14c90c6bee5b7e41f79cfe1971a07f95502c9e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA052391255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b303db71a61dfdab2f5600827b92eaf323d3e4bf0d8f91ae49d33cdc47b92. 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/VNA0F2304072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79838bb3ff2e79c060b67069dc921e84612fc802329fc517ca4c4bdc28cd5984. 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/VNA0F2304054.
Em Gian Dối Sao Mong Tôi Thật Lòng - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe951253953fbe7bd75d74fb1b598b043fda807fb612593a0352f56c145f6ca2f. 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/VNA0F2304190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69784753fe91dee272da911111e2cf4c3c722d805019e9c8e04c358a4c27a6c. 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/VNA0F2304189.
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 0xa146664f4ae9576a8f5daa1fdd941942cc640766497a09eb01909bbcf5f5d8d3. 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/QMFME2206729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c11f229e611820f0ed1b7d29c1feba7b6cacf849da418c7d261ff73115990c9. 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/VNA0M1903285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523172b301b180a70697360a3b0fa4e812466df973bac99b9b28f4381333a4b5. 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/VNA0M1903286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd273d30e036d455d9ff1995a02cb66a792636376a4a00e39e3609570153c1a4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/VNA0M1903291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c2904866002dee2e4d6793a2ed8a882fa58d694eb3e5a1c257d57e066ed13a. 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/VNA0M1903295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f47fdd0cf072720921fd0f8662f19efe8c0f0f0a49950e13e591684df4165e. 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/VNA0M1903297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78536fd113f586d272ce6d00ff14cd2457fa39582a360e4a53f9b01ee4b4aea5. 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/VNA0M1903312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2545977f34ab33988a0f3ca1610b161291d7d3408ba094c09ca9eb001ae9d0b7. 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/VNA0M1903321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ba5e50821af4b13642849c178486213a5b024b45466ed77aa14fc92154834e. 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/VNA0M1903281.
Anh Cho Em Mùa Xuân (feat. Lady Phương Thùy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd4053bfe28c5c081bc77ee6069627b00264bdb454b7d0c16483609dbc7b688. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/VNA0M1903282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48ce798a9e055f37d3087028445de7f27b37220ceb67553955f524a17ae72c3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/VNA0M1903283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f938fb61577b0de07d5d800a10d103a2f624263b839702de309f330d256269f. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/VNA0M1903284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15d4bb8edfd0288cf5014466c30c3680619511f3e675f957cbe6e05692e3721. 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/VNA0M1903288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3f051de19f317a5a7a76fbdde6ca75120ab24395abde7b4892cf87ad9ab807. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1903289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2171bc63f6fa4c91766512321f257658c2192449b2d1b126f077d2d7a331cf. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/VNA0M1903290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a350d8857a02dbb7155695a09d405c8ae5e5d1c5876673620dd956c36b7562a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/VNA0M1903301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e378e7552c84ae8a3860219e4a68461ee1a9e3c20bd9d0a9ee13adf154f66c. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/VNA0M1903308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf7911fb5f985b2072c28a8b2aea6e86a2e4368710945ef4ff3a7f1a0c219f3. 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/VNA0M1843168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1161570dd0db2fb27ea730987d158b41cdbf73e05defc3aa9d983149975ae0. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0M1843173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1ca98260b5f27912ca02a7c657362988950f16dae76e79911a2768d51fab90. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/VNA0M1842842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763102ac67b3f725e47e85d8e29e790094426b9d1f9b62919921f4f3fdcae934. 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/VNA0M1842844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf56d673885458fade770c45fbacdb9f3ea119ab8c72da0248be5b18ea15f7d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/VNA0M1842845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221f4e801a234eb3b4a6ea7078f1c97e2d0a3c74d06df1ae1d628a6e28bc6d27. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/VNA0M1842839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211ea4d2a7fc96447e9e2d06238ffe52694cefe70889f80d23d04e51895e6ddd. 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/VNA0M1842840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8e145e7fd515d68ddafa23a684014615d62b9d4984d80b0e68cfdfa43faca5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/VNA0M1842841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd81aa1c8e5aeffa16c29d429450c2047f1e7818615f23fa4f6f47caa83c526. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/VNA0M1842843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e979c06508ca8272d110b7468fdee00a10082f3ce6886c823a8bc61d1bc83ee. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/VNA0M1842846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ada58940e8aa3ecc5ce2bac2de9a008f08292f0ebd1eddad4ea95be9fc2fb9. 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/QM6P42411416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad62eb7e4356ac461e9bc83eb31193718dcf88f4060d3be185ec15cf29620bc. 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/QM6MZ2448707.