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 0x531135385469d208d8049843aac2993b507517d2feee35f140bb5411e624e0e1. 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/6fb8dac8-1a74-453a-b91a-842cd8579517.json and https://artists.proofprofile.net/proofs/artist/6fb8dac8-1a74-453a-b91a-842cd8579517.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 0x43ecb00f846ce38af90ef7c16b2ecf8d11fbfe83c58b0d2f0c14eecb5712b242. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CLUM71902440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f219b014f4571fc2f94a20a9eb4bb9e12972efceacf575688a5b7eb0b4da440. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/CLUM71902441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faf6ebfed2fca7db4c76699753d3772f9c9427966face50e1cb32b23384a8df. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CLUM71902439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2375fa35eb0e64b902e52fda862fcdf3746922da16582357349f7b6c40b7b3. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/CLUM71902443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc8da5038248ec4cf519db9d03bfb66d5820f0fbcd6ea39575735d522c27b38. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/CLUM71902437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736aa1418559164b80cd1c94d8d87e93a79eccf44c8befceab9e6ababeba7d26. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CLUM71902435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df935458b855f3860fb7247651eecdd622968bd70cd364d5e373a3ddd3ecb1f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/CLUM71902442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a432c16690c8a368093a3583e36c08fc85a7f1b1d6de3cad678a38ce95cc675. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CLUM71902436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047fd57ab58a4629e6d29ed7ccb67a350c48799fdd4bbc6da2f00327820b79d1. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/CLUM71902434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e1fc2cfdbe78c842cbcef0a7a3a2c602b31ce14ff3015688ffaab236226fbf. 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/CLUM71902438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c4c99fc1aa86c996b72009ce485921056b06a642aaf5bba3a17ebb9d6f3a23. 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/QM6N21775606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667ac12137923827f51d31f75fab7cb310abf641928e1e8f7ca2063a4afa461c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QM6N21775608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02af1eee32ac0934bb5b6dba37e4a742b2a48c2f23c1bdd358cc12e448345c57. 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/QM6N21775612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca5aa20ed25e41fb9ff2e2d779b066d5f483e91278c7776adba2cb502401884. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QM6N21775614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373822914e7c7be7f0ec13b8e8c7ac0391b3c734ac7a2be370334e289e6c6d83. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QM6N21775616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4588436673eb0baa8e9c7e786fea3954aeffa658424c2b7dae7fb09a906f10d. 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/QM6N21775624.
El Rosal De Mi Padre - 2006 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8669c773526c6b480d2f938511b44adbc0dadca633965bec92a84babf94b01. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CLBB20601052.
Dime Teresa (Guaracha) - 2006 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cd6d4d0bd023bac089551171c15fb9c9abb2a675ce76f2d60fff34c2aad937. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/CLBB20601065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b16af636ab3686149963d368a260725e716faacc55e2d40109d1869f0b5c7c. 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/QZ22B1930012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2cccfd929567ef38ceaae30c5dd38c6963b3cb08cc17d73342e62da54ddcbf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZ22B1929995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61e8fdbb3f079d46a079cd99bd5745ed2798514bd620a60bb59f40f8f5a9b25. 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/QZ22B1929997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd72359eb62ceeff27782c656250b3e47caac18efc4f0f435c6fa66be17c924. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZ22B1930001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cef89261dc7943ebab7b8d0286c21156ef633931c6d760d3d8ed3c16c81d95c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZ22B1930004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb020a002b1088cf412c27a7b2fcb6530938210e5d7359eb470969c8a7c3363. 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/QZ22B1930008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b16af636ab3686149963d368a260725e716faacc55e2d40109d1869f0b5c7c. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/QZ22B1930012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370c94c13c551491c8a00b5de4d0dc6d1c7ba942a118bec567f35bff9faddc2b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZGLM2474282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7ca17af5920ea739d54d65d4391a4b5a67a41ef4c1bbc1a02b1b50183c7793. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZGLM2474284.