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 0x4a6687ffbe30759d2148073e2ae5f8a059bf317d4f37931ccb2d98c5e8a93571. 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/7a4578da-acc0-4e83-ae97-257bddc19903.json and https://artists.proofprofile.net/proofs/artist/7a4578da-acc0-4e83-ae97-257bddc19903.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 0xcfc2d590b219f1b8d70af8fdd26bcba2f0551c082dd869982907979ec035404d. Chain 2 (Bitcoin): anchored in block 957822 (2026-07-13T08:02:12Z), 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/ARG991003580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a69036bf04e12409a68efc9f559c3f5dad858dafd800f7e723fe1f38f40a910. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARG991003581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cc213773a030d6beb5a378ed1e5bc909e189a269a49f3620b324e2ee7c5e00. 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/ARG991023892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c263e35209f88abfeba636d2af35a4d565b5be5204bccbbdbfafbb9c1dd4b82. 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/ARG991023900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498c296675a68b3e4ebef27dfc44bded33cdca2c75901256e96eaddb2a00e224. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ARG991025939.
Tu Marido y Mi Mujer (Simplemente Amistad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26132605701c8aa243f3d72bee2054068f30b59b5c99cc401c9883a0bd5a243e. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ARG991016154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c5e58a17ae9e5c6bfebd6e382ed35ffcec6b50d87d06449aedcb9395b68ed4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARG991016164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c467f013d8569a7585ec82a362e060a57f490cd0aecdf142d5a4b2f55cc7884. 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/ARG991016170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894b6d3406d25af1d7ef2c2eaf1e58b84f187aff32357b6547387c36d544c621. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ARG991016172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e0b80329b2643b21e2344f09ec138ac55c7efa98a50d6f27e3e513f0ee5703. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ARG991018732.
Quedate Tranquila / Me Preocupa Sin Ti / Despues de Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c491b8b71ece462f43c6de59dbb54de97b463bcfc0001927f2244782857b53e. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ARG991018735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9735671f6354a06a607ad2c93a739739ba1bf2ac51f7c6433384ae426c0f19. 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/ARG991018738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af8cf96f168200c8af499676be8dd21b1abe57c670e72506967a4a2b0a21c75. 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/ARG991020588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59225aebaea3ce8eda4758de7f7c381aeb47119d9601cff252ad42c8958b2b6f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARG991020589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe932cbf23a639d5a3a1a5f5698d6e525d57b485f3bf5eb85011ed9a0c827b111. 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/ARG991020594.
Enganchados: Bombon Asesino / Perra (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90370f2b718e5f1e9e0e098d1f9053fe56b4ac5273e58dd80fb92b7259b39325. 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/ARG991024419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16b05b907e223ba67a71377730948c8ffb9339b4ea92da07336f9e0503bbc6b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARG991024421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2970b93dba500d3d6c80fce879eae56023cb17ee9f84a0855a2702d0de1642e7. 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/ARG991025601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4d00cbf5ba61c3873aac9dceacb58ba8eac2df136aea68d2028e92e3f863b. 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/ARG991025638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558d200878353a476ec12a7591a6bc90a848459feb321b038ff3bf29c4328d6d. 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/ARG991026022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a753a735ecc8072c126cf55ca55bd9bb478366b744f03c3d4d52efd7f255bd. 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/ARG991028687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc0723ba3970e0afa9937e4c1733b028db746a054402d8247f29fcd39c88986. 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/ARG991028717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818953ca2236685740e7892de09b265c47db2634685b5bf4ef1148d89faee15a. 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/ARG991028881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5e417ed4037577ddb0127756811512a155c3411267f349b6cc2837d8b48376. 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/ARG991028685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdacccbd2072038df109dfd20c0c8d46099334a9dd42349c11da32b74ae251cb. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/ARG992042832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68c735389955b9440a65ba95470a94b8144ef7debf38a85c523a928c437b1e2. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ARG992043603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c470c42c50251fbead8341d80778c38a43065779ac49f14ed1f32b1c8724c21. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ARG992043605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecfe08776071471ba59df42bf9490e3dd03a26c2f391bdb854276a2e876e494. 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/ARG992043606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25a63ae8fc3b4ade6d8789f13b0b545b1e2448f2951125534cdd8f31fd30099. 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/ARG991019891.
Cinco Minutos / Dios Me Libre / Osito Dormilon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b194f2bf088e4987b4e6fbf7b53b914c6a0c34168a1691100dde347599d0cf. 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/ARG991026151.