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 0x34c6c7b6cfb653cbe3638d6366b0e08fa17aea84a2aa7654b0280862b2c14035. 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/d772828a-0017-4af3-94c7-eac144141b9f.json and https://artists.proofprofile.net/proofs/artist/d772828a-0017-4af3-94c7-eac144141b9f.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 0x3e7452f435edd930f45946cf83c8781e79db46bb5338ddb8faef51c0e2eec446. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QMDA72237303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc5e1f03b2754027cde345dc616cfe276ec967605dfb7b81eb7af8be0cb8b3e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/VNR011016953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12e37ff3b55eb6430516e6b9d2ccc12d256ccfdbab83630266f44dd25883392. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/VNR011016892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d2c6eb18e1c89e1b016cf80a7813218051d06d87c97458b7aafaa041881c8f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/VNR011016961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81adb26777b965ca759be50615c2e54e60d21478eaed2d3ae94dd1c379b3743d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/VNR011016966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809bc9a79dab84e395e3230ebd31fd1942198c39b693f59e6c9317af43c672c8. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNR011016967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f608f9f1c4eeebcde21892c857a3371e1846d56f3e601c1f2a7b285bd89003a. 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/VNR011016968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97be354a7b75c686f369133c9442cdda83b5fd02745ac2997be867c575a369be. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/VNR011016973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26e2dd347d6af9fb2ec2e869760de88f5906be73785682a93a77a19299270ba. 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/FRX201955629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309a05e4ad0b7e134f4eb51810fc78307f03125beda5ac44bfd544307f1bcc48. 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/FRX201955630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d06a764ce9b1769045323a8bdfa19e71ca91b82f837a3d76c9012578737314. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/VNA0M1911612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6754eccaed136a82fe3da1485e74bbaf067d2616e0b694642adfa312a60f8c. 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/QM4TW2403057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5e9873588f83005f57bba81d9d826ed5de8d19c7acab6c7cd2927f367d2fe8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:04:56Z), 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/VNR011133985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028282a0784f5982870290e17fa5494520eb8ff4450de9f568d73782b91f9dbc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0P2443778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78833a197584d63feb6e805a839d96557d5f4867ff8ac9864f23937a8f82c781. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZYV2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e86bd53cda57979ce7c40c045c3c3dd6b63ae191d74a1f7978c4d94b2c62b1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZYV2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6906aa9d05c52f4360c182228b3d826346acfc2333cfeac18a35d361977e0572. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:20Z), 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/QZZYV2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58b066029b58d223fe0544445143060109623de1633d5486ee69454a7a5a08d. 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/QZZYV2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0893ba6ea6858118266a964766b86b913915948f4a1f84daaa8ac121bb70e8a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZYV2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2372ea1dc169f7c352c7a97f7a523227b5aaa29c1993b3304cbb0d6cd76724e3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:26Z), 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/QZZYV2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712b4eacdfa73f950a60f6275fe001ace1169c3bd1da9393cf6613f96c26e497. 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/QZZYV2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2fa7291f0fcf7a173d89cdbe3edc8658fbbea5f2820a95e0cf726b8adeddf2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/VNA1M2406509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3903297f83abda4f2e650e30e0134b43f5e3f952ff1ef2b4097a26520b9d94. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/VNA0M1803321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c264accd026323e896b18218e1262113990219387faf0408cb290b1f12454fc. 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/VNR011046886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5f838a291f941217375f9dd5a204bafe2e1357143dd6c6e0100ac9baa944ea. 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/VNA0F1781468.
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 0xf054d8ff76dd6a16aba7b6bba2a0b600fab2f61789e660c4ec0190e2c2d76c61. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/VNA0M1910374.
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
Bài Tango Cho Em (Các Tình Khúc Lam Phương)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593fd3cf369b80ac6c353ae762072e90e1dc98ea6a00d7851a8953525317e3e8. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/VNA0M1847440.
Hạnh Phúc Không Dành Cho Tình Nhân - Cover
Hạnh Phúc Không Dành Cho Tình Nhân (Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8396d7697bd4d638099d6c0166d7b6d358ce64f570f15b3ee5d113d81c25f051. 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/VNA1M2400304.