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 0xd3b469ab11f7ae8a1e07fcbca4c85f97ff0a4fd4e155badd81dfd714cca6ca50. 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/f7f99f1b-1f6d-4a0f-a523-12a30ea91065.json and https://artists.proofprofile.net/proofs/artist/f7f99f1b-1f6d-4a0f-a523-12a30ea91065.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 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 0x350a3e49f912c1f74eb6c7e98d4cfe1b21b6e36258f944c8045cb70e79dd1f98. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/VNR011055730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fe677f8a31166b01d9a6457eed43729bcc96c91242a5ed845585370137929c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/VNR011055731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb046db1bbbea7ee1f8849165238575c51fae9a63a266c84ae6048210d1f0b8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/VNR011055732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c3764994e2f6896f2a6400a49c7e18f797f8b208e192f2d8c5a9b99a323d0f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/VNR011055733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1da95f2628eb60c7d6f0019e57eadae7c81cdc89f48abed799c66c2e5369850. 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/VNR011055736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be10c6f0f502bcb1cd6c234909d34e6e8da90cc580b4fb73f5d403d415d7a97. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/VNR011055737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab9904dca9781aebfb338f4ee900aa3ac935d96d32d8230092ef5b8e91fd521. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNR011055739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c00691c8f4ae8bc02a6c4e43c6cb757a05d85a0c95f9b33e1ec70d4a6c8ecb6. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/VNR011055740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11066fb9601a4f16736c1f7c7fa4eb2fccafc90e9af9ce8031c1267ec940038b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/VNR011055832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c18fd419fba559fabb6c1d1a30484fec2a8b5a71c70e12d3a3ed8b54c45d41. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/VNR011055834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733be86a4e075eed2eaa3194ed8970279f7603bbc760ceaedf866214591306cd. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/VNR011128668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4997c65165e617848bb5f1b74df47638bf2fd494cc3e71b59cebc882308c7e62. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/VNR011128845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6630994d7778441de7663a944e80e0ff877262ccf59ca816a072bb30c3b73b2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/VNR012301107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8889cf42495bc30746d253b5e357fc8f8eacbf94c5f26202b2a5098de440e43. 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/FR2X42242580.
Liên Khúc Giã Biệt Sài Gòn - Chúng Mình Ba Đứa - Chiều Thương Đô Thị
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5613895b5b28d2d5a03897fdc6ee9eb367416653d4ca064cd99ce72fd6cf2a8c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/FR2X42242569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1884f56aaa28a512d830a01d2eea55a48419101cfe4fbb54767b4bcbb9b89e5. 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/VNR011130941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4d2c7e941d70d084570c68efa2a20a9a8962d1fced443f59fd5a2a4453a2f7. 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/VNR011131178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2c389b759463cc0ed70168d0949cbc6e2258006dc1638c07d78502caee8740. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/VNR012200572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db3bc54adbc56510cae7af5d2b5fdb07f9c7dee096c8d18d1a552ef07335948. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/VNR011132095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3d069072d336bbb942cec925c57f668f901b2c23807a309ce7312862752d77. 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/VNR011132093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbf737faef8ba07854c34bdace9b7b217f54467a1c3639db7392137be0a31e3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/VNR011132091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b69f0d10d435503862e1c14186f60e9eeb8b26ce13e67ecaeb5b73282e3f8c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/VNR011132892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d77d8243c7d77ba0240a35bafdd97ac6b3bb7ce6ba96b0f8c96a3b2ca59bb78. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/VNR011132947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538ed907f74572a6cf121b0fe5fdb804b37cdc0d9610143dd56dc9426eb0fc6. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/VNR011133830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4669c790a28aaaa87f3587a32e5f18b71e24abb37c3a6a298f9371a913d2ae. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/VNR011133913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a91987762d10bddc0e3fa8a300e890a198f00a6bdd1b5f2831c090c5ddfbf2. 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/VNR011133960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc74cca661250e201076ae5ab579ee9d97a8bf9c0df39a334e91c9011d289a7f. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/FR96X2124227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0e1a21144c7f721f26003949e375511e3b73f8dc0a6cd9ed0b6c6e62a4b968. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/FR96X2124236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76b9cab789830e0345d709bfc207051c5c431e09fcb7cfc312d7eb164b3a7af. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR96X2124229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1df750c74f1158a86ad4f887253814bcacd12fbfdeec284455e29d86ca34ec8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR96X2124225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5bf3314c79f658026709cb5ecfe88beefd3f087796d098aac6204469a3aca3. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR96X2124235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e96b169932dc56f042a3b440ee1fc8dd8dfac8a8df30e532252002b24b46177. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR2X42233770.
Tương Tư Nàng Ca Sĩ (Huy PT x Tuấn Siêu x Mimilee Remix)
Tương Tư Nàng Ca Sĩ (Huy PT x J02 x Mimilee Remix)