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 0x980cdbd7180d2d727304e7e38d6fec80cf394631577786e266bd79a218bbb3ec. 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/0551858b-5be4-4965-990d-c36a8a997aab.json and https://artists.proofprofile.net/proofs/artist/0551858b-5be4-4965-990d-c36a8a997aab.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 0x79df4fed8856eab81e13e9ea6f7b17e7ab2568c16810db01a973d5c07c540a8f. 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/GBBVL1404091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd692a80c6357c6bb0996e82fca9351b1213d55c8a168543bf8653e441c4ace31. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/NLCK41401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2629e89f751e6b78b1e7f3665fc32d5276e3294b51a9ea751b1c96035bb3c310. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:03:17Z), 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/DEU671501475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3346bfa4f2ebef8f9d36b7dfce4913dad0beb26193f3174ddcd9c9a7511a54b. 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/DEEC31850032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed94b1dae522e51ebb27f02ea06ff2db72e774942e30f806faefc36ceb6bbdfd. 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/DEEC31850033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289f09dfd3d8a7459fbecb64107ae79058873493b6bf11e85bcbcb1e8f000092. 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/DEEC31850038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a97fdb5a3c36fe13b5f5a4082b0e29db04d0efb635423b349958f4fd598a1d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEEC31850039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285c1e02fa5baae24d0650f422a95caf45720524e61ba5ac35f14896c8f518b7. 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/DEEC32000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf443d8a5d6db52effba35049c9b12f0cd6bb92c01ab543ba0d670a12f20140f. 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/DEPX42300623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd004f497006115602b1d449613f5f78e503c177034ced9562a8f2d205b379990. 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/DEH742405356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4d7f8375b6f1fa17b934498a7880e5dc05cfdf29519e0ae8c6d46f027bc0b5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2484269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff56e63824669d6e9cbb1dbf8cd73ff74755b657b3bbbc5089bb6ed675e1442d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEPX42400734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe731324bc06dd8595bb98b66400def79d440e387d427b8df67b3f1b1e6854c1c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:05:49Z), 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/GBKQU2432876.
Feeling (Hernan Cattaneo & Mercurio Remix)
Feeling - Hernan Cattaneo & Mercurio Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5697656f9d53711bba6fec936b868ec5a08b5045a0ee306d28c3875ac0ab3325. 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/DEPX42500755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76812d5557b421e53fd11ba60fa6a0e09cc688b2bdb855bd7643d3cfcdfe7d4. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:56:12Z), 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/DEEC33501855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9419e1494199db8f9ee0070bf6b157581845135cc33c8c1bd472f43ada2d63b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEPX42500783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e5f473a69cf9972fe5604dbd5fff06b6bd42eb5a9a7d9e55ad6904f92b1a8a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEPX42500781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee0a5dc4c4c7a199b03fc59c84c1a10920e34219c7ca5785f01e36f7506e94. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/DEPX42500780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73a5b15aebb1234cac651dea04a9b01eb6f1ebf6a0be2302f65556fa6cfcf1d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEEC31810280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cac78b406c9c07b851a043fd44c798ffd90fd24458e081ad3c60a74de73e0b7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEU672001622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388de0f639676be4f9a4c9040288035f7dde921f470f52a17bf51d996811234a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEEC32000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a14e38ac09a5612a9a9c5c58339a4ddbe335b0da459b27627f90bcb02a7fa7. 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/DEEC33500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7def46e5ba1cf998dddd2d99f987210bcd6d020f5bb4a701e71f572a3f647d97. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN961730608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365e886718e6ddfd41436137b2745ceea2aae220d426a5d2cf18f9a22f1d0d54. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEEC33500651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f00435e31520648b4aaf291a4ab6b4a233c8696a1bce6f261ec2d9496d3fa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEEC31900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc44aa5252cb786991823dc807d3ba1cc88e25ae4c3f3b35a4035b3c456697e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEEC31750025.