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 0x969cc675c2034ed6f562dde4b3a0d7296ced59ed8ca8fce17c1398d5bf88da28. 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/7130150a-1d95-4c25-9fb6-7414f7a5641e.json and https://artists.proofprofile.net/proofs/artist/7130150a-1d95-4c25-9fb6-7414f7a5641e.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 0x862636cb1b19a83a95154c776531377a05759bf5130a0fcb1c2a2f390ada5e7a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXF367724130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512120a92febea7feaf6535ae1563a1b5b7bf7b6de9427495efc50529582d121. 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/MXF367724122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44e9bd45128cf386151518d751acd6c71b8b9bfb3d0e5b1e99dbfe8d7cd48aa. 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/MXF368226642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183f2e0632fd21beaf0d42fb003e281c28cc680510a5176176d7cb4a72cd4231. 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/MXF367724127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b66535b36d85c6b6eb7ee443598757b6aaef9bf24d00c9fb1c12e76badaa04. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/MXF367522174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bb995cef6a2e6309cd3059d97631ce3733a876fd13e6f56b6bbeda4486a18a. 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/MXF367721422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c03d4544acf637f18fa9c08fe90ee9cd925d9d4c1cfae6ef55cf075056aaf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/MXF367724123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a74b6485072df777fb8cb31b013fc97338f20a67a6f5ffc68e0cf9a5875ce5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/MXF368126212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78137579f00b0c8c3a17b2e9a94d451fa2ced713975eca3399de47de1ec0c8c9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/MXF368226637.
El Tremendo Estilo Norteño Del Dueto Frontera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979a9d89883c4e470b2cf806dab9ebca63b0d01bb1bb00b77ef927bac8ea32e5. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/US3DF1111487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2887fdb401450ebc3f8fc0200265c7dc2c6fd72a500b762bbe36a7f63c0199. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3DF1319352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1691cb79bdec7ebac228f697b1c978f2b97e6b48fe0ef159608e3c978b8df227. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US3DF1319354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76f6d4c33ecf7e119caeb54cb1ff7b77ff7c2c7443a88d7d08a7cdeb277a536. 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/US3DF1319356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc858eada87d4bd385e331edd6892086fe9ba95f1feb78e1e476f6c1b957e9ecb. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/US3DF1319375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc37b66eed5ff5208a141dc6c499788d3804332b7770db985e2457b0901a82fd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/US3DF1319357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9869a2cde8c85f905a7498aa8d9a4753cb5f46e78a4ec6fb29d731801a90ffad. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6DC1695511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1026c49c58da754eaef6f9868b40db1dbfbd6a1893fe9732dc91952828dd745a. 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/QM6DC1695516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1ae0573989f8265d5c517e5be1290d5540ba85e32b706d4e1de54c0dc4988f. 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/MXF399000346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0641f1c77a502b9374d0333afdc64ce3037932352711900cb15e93971a9403c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXF399000343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d7b2477a8a0fb71116bb94aebc0556519df9bed320d4af35e419999b824326. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/MXF399000338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa90ef0b1781d2b642c79f3764a71c3203de8bd0cadf41fa3a3a695e1f9f65b. 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/MXF398900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4414319caa0a6b761d7a9f425d339c902c9317991ba180b6e2dd7b555e0c1817. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/MXF398900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a9078b19943faf63d663114b6f0ddb8f334c9252c2f76fc07e81a8b4e0dba3. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/MXF398800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e98e148039bec0889848ecfcd2155b79e0743826108d5cb8bdc53e186e4092. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MXF399000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1203e39b1eda428796541e1fbc116f62db584ffe4b7623a41c9d06eeecda550e. 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/MXF368126211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cafe91c179f70059e45a06141b1c9c85dab43888236c5bc8b22a73f0419de7b. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/MXF368025917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c76b0421865e8d27a92eb0712d1c2510d84427b945cf8ac44c2f48c1b64e06. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MXF367522578.
Colección De Oro, Vol. 1: Maldita Soledad
Colección De Oro, Vol. 3: Pajarito Piquito Rosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe357562fc0b9a202292d67413249e86686b8bb38e7e77d8f87ca71f6780ceb3f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US3DF1111386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa617bdc93a2161e7be44fc35d0483ace93b50ce999860e25d290d932b33c80d2. 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/QM6DC1695526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ad48771cdf74f378257f31799612daa85f9b828d1d1254c55498f2ef6b50f7. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QM6DC1695528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e73651de19145d8c370128baaec69eda8ebb1a40111cae71767b46cbfde83f. 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/QM6DC1695525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa617bdc93a2161e7be44fc35d0483ace93b50ce999860e25d290d932b33c80d2. 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/QM6DC1695526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3d0df882805a9549971e2902d47bd8505e11c7f385f486cdde1ef4901a9d8d. 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/QZXLZ2509280.