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 0x476a7df1350fefd9dbba34d18ee2182c7afd4a1e88c70477682c84e71ae56455. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a601f5ae-ed22-4909-bfc1-b9eb64ffb479.json and https://artists.proofprofile.net/proofs/artist/a601f5ae-ed22-4909-bfc1-b9eb64ffb479.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 0x725801b258cb0a19b3669234f810446d84d3a9f2f03f9def33b414de2bffb7cc. 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/GBKQU2240592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961b2ac6a5900fc61a86a8ca79eaf10b0907031e704316cd350c7009b27cf79d. 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/GBKQU2071676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d247caf71001f74c70738f9b8ad820720675fd8192d9afae8296e1d429a737. 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/GBJAJ2001121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be9ae6348e8f405feeea971f722dd4126b8b6396b8216f3613ff2ec360b2146. 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/CA5KR2018857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a76fe55019646062c2a692d2da6961a387d11cb44c5337f7e00659cdd974ffb. 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/DEY471980095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c81ed2a06ca51c4ba024a87271dd217211c77180780cad4e109bfbf875ddfc8. 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/CA5KR1833782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f533851be7a892aea3676016452e26617cae2a3a03d627376b93ec85974b01. 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/FR10S1803097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce1bacc4853bd96dc69fb047e4e244a0676cda66f0f6cc915b0089d6667db6. 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/FR9W11413374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86818bcf289452d2569bcc7e7be50667a789381cdfcee878d2998aa2fe492dec. 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/FR9W11500465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eb9dd6d2f27af567099cecae681c8c024855420b8ada3b5be657a9d30542a3. 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/FR9W11500427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf38b5ece9befbf69b730a437d8c77317eed6bc92b6d46825acbbecba4c67cb0. 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/FR9W11500450.
Kitsuné Musique Mixed by Amatan (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42fcf1b0012752c6b9dc38ae1f81dc19232906675599b4ddd375fbdc08f12b1. 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/FRU702100046.
Kitsuné Musique Mixed by Maximono (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e95027fd3adb3d96e888746330b22a237d229278a5efdbf7d2ac92abe1c1d3f. 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/FRU702100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb728308b5ac3abef45eb400bff8530810a3d2381cb64b312f627f7db98c28578. 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/NOG841710010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e5eab3ca590612026525cc4f40ea53d660eb39a693235e77288c88313b6951. 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/CA5KR1557822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8742e2afd83fb358e5e42adbc2076f62cae014a45bc93fea707b35cf4a864b. 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/CA5KR1557764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8b6e184c14bfa6b546b9c9d0c63a5116861771656fe8e93ce7a9da8872a06e. 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/CA5KR1557769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c22a398fbf602aeec485b3e6041bb6da75433ddd811f0c9ab9e8ec2974c5b6a. 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/CA5KR1557770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fbaf8e69c8595e5c558d3ee75f045a54ad72aaafb08e0a6ec1118b6ae42f3a. 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/FR9W11711439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc035a9a88f28e43e6fd8a8dcb1cc311e9ae5eb88a80e574154253d626f8c8b73. 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/FR59R1672513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13375db8ed8efbd6875ff6b86e39c45e700d77e8773adf30c0a6c56b3530616d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLV62216170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4d528a368347648d0e7b9679b3417ff9219641ddde69bc64342d93476f4dd4. 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/GBLV62216177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1866386c2351e509cae2251a465deefccf24bfaedd70816df2421f8c95598b0. 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/USLD90815233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d6ac84817d6fcf11de2796f83e5fb44cdd5fb594f087ee58e11a30fbc5763a. 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/USLD91720240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab66b211ce0e32aad3ac85f6f822d68428130429a105fd517990067527abb163. 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/USLD91720242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0062475b1244e81643b89857f5f0c231988d66536f1fd996c397387bad9c02b4. 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/USLD91720244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287009251c6ca201803c0278c55a468bd42bb323e546d323037e0daa4826f4ed. 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/GBKQU1663664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2dd057268f49c91e9a7ceb3f5a33cb3311b7201c1849888bdec25f0129b344. 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/GBKQU1663665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c183ff721ada16e900c3c2c243e67d8251c220f0e04f6989ce8086c363cbf35. 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/GBKQU1663666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021f1611fbdf20040814b0ee68c270d8ff870697fb9e5d278a0d05203e1dfa4c. 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/GBKQU1663667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae717d79b38d07427d77ac3552c830b1331f0e136dfda25ec13f31234eb2566. 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/GBKQU1663669.
Broke The Law (feat. Josh Taylor & Henry Was)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb04f01ba582ce847f92171146d541e76848220c4180fc65fea56f88324339f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:46:53Z), 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/GBKQU1663671.