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 0xf57c97b2f7c36404460f22035ba86006a1d8f6506ee5baee93eb3e581c4ae1cd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e37ab065-6359-4d1b-a0ab-610869806ded.json and https://artists.proofprofile.net/proofs/artist/e37ab065-6359-4d1b-a0ab-610869806ded.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 0xe72ead1e4712125c0551420ea5fa11919f85d6c93ff7d3f63cc0a59956fc41c0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS182055511.
Thông Báo Hết Ế (From "Vu Quy Đại Náo" Original Motion Picture Soundtrack)
Thông Báo Hết Ế (Theme Song From "Vu Quy Đại Náo")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1f18e4a41d3eba6352c2517d95447547cda3db578e1ae7a7bee9d7f2b194b6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/VNA0M1847073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752ea847641db86f2083d58ace20a23d59fc27ede3b1495dd87aad77e490b37e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRS182055508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb975c142b791887558dd3450bbc7fc0f1d8989011911e9a90ca89209e0fbb8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA072208475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ffeacc830667fe082798d1ddb9b357303e650ea5ab2ebd1dc0cf7818505d77. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SGUM72100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac62a5f593d137bd2786300f2f099f6760d8f9493cb61c36142597314d65ae2e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S2254277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d347fa36708c5fbba9cd60b888691145d33d52613af59acbd6bfbf37ed48d14. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA072208477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2845c66039e47bca082fd5d10bf8371fbb9df8216c8c6dd10479f114272cf14d. 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/VNA0M1930230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69491ccfda2232089baa750b6376c09715a4382aa246096750619062e0837b87. 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/VNA0M1930335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac6b916535911391d66214d07230d3b281d3558ab70d998dc763000279bf9fd. 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/FR10S2404400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb975c142b791887558dd3450bbc7fc0f1d8989011911e9a90ca89209e0fbb8. 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/DGA072208475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ee99a3259bbf25fc168a0015c98b09387a1104524fb61a062d64761b2ad90b. 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/FR10S2234268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f195a4dd3c547a38e6e9e9d6ca353f1d22d4702d9202baf777bf05b21bd23f9. 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/FR10S2441259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846fb96077857fe69c6deda3998b0ddb3b258a5e1bc7119d43dab26b87d277f6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S2315969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67a637ea77eec799be707ec408415534f9f7d15c8412fc8b235ac8c9421e41f. 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/DGA0R2328173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac6b916535911391d66214d07230d3b281d3558ab70d998dc763000279bf9fd. 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/FR10S2404400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c16edb8f52c83da2334fdbd090cebff63fdb247effe6b3fc0ee8f2e3aaa3af. 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/DGA0R2330882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac62a5f593d137bd2786300f2f099f6760d8f9493cb61c36142597314d65ae2e. 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/FR10S2254277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdb9987b183ab6c90b5cebc9cbcb5cc593e4bf495782de10e8d08653a5acd64. 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/DGA072208476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72ead1e4712125c0551420ea5fa11919f85d6c93ff7d3f63cc0a59956fc41c0. 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/FRS182055511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ea941fc1936bcd4c4da35512c1c22d0b0072d8711d9bcbefb8edefd1873c66. 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/DGA072208478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d347fa36708c5fbba9cd60b888691145d33d52613af59acbd6bfbf37ed48d14. 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/DGA072208477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3241d89c72e7c754929ba90986a13c35d6e03228a7f7285e254b0787bc13c2. 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/DGA072208479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5722aac19cb15f3037a7c16a790cc6bff3c3de358ab4561716acad6ffde329e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA072461004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7078ad202fe76ed7606b9034af0ccd66d905ac5a25c6a5111713f788242d75. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:47:39Z), 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/VNA1M2400623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9a18a8458bf8a891c5d5afa521bfc242fcad8c611a32f7425e3c3d8d80cc33. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/VNA0M1939821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf244b716bd172ac909abe53212c4b9da05e7e11cfac09eda1f5b6bc8a2b40451. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:20:41Z), 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/VNA1M2401268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb1425613a33f2958b4381ce649a0ee2ee2eb37993ccd9de4912b16f7c51c30. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:45:46Z), 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/DGA0T2430456.
Ầu Ơ Ví Dầu (Theme Song From "Nhà Gia Tiên")
Tiến Hay Lùi (Nụ Hôn Bạc Tỷ Original Soundtrack)
Ai Cũng Có Thể Là Quán Quân (feat. Dick, Bùi Công Nam & Hoàng LV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0646585c0282f2933b877a6dc861cb3194a3b2c7978cbc202c94b8f608cf7e2d. 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/US38Y2417295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdabe58fd5e88f7a94aad3afcc412578e71f3a3a17527ef27c0c39ebfbf145b. 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/FR2X42483712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1efdf12ec822f59b0cb241e09d9e9c8de14da67bd184dcec0299360ab56e6. 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/VNA1M2284589.
Ai Cũng Có Thể Là Quán Quân (feat. Dick & Bùi Công Nam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de251441817a505748e430dbb23d0674e51a542b071062ffe65525bbcfe51e3. 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/US38Y2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a4abee1289d408443976a88f3c736df93f7bc23293acf837c6da289867b3c9. 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/FR10S2510076.
Anh Nhà Ở Đâu Thế (feat. Lyly & Bùi Công Nam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5ce3f26b8a88f9cd7769038ab6ce51ebf130886ab67ef1769e92cb6b81c3a7. 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/VNA0M1912384.