1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aeb11b37e3b7f91de1cb7f74e97f51dd1a9877e5723f6786ce71379769edec. 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/387aef71-37cd-4aff-95e0-e49b93938e63.json and https://artists.proofprofile.net/proofs/artist/387aef71-37cd-4aff-95e0-e49b93938e63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x719cb84fa67b898994f3741ceeb619979af099d562c310636f052378fae10bca","isrc":"DEWW42300120","name":"Love Me Better (Nico Pusch Remix)","registered_at":"2026-06-10T20:06:27Z","spotify_id":"3xcEaXvhXZvOfG4SAfi6fC","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719cb84fa67b898994f3741ceeb619979af099d562c310636f052378fae10bca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3xcEaXvhXZvOfG4SAfi6fC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3xcEaXvhXZvOfG4SAfi6fC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b613571c686169f29217f62ecc0be10b1f8082520a3745a8b54e30df9a425aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5IhahvRwUCL703baZ73WOt.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5IhahvRwUCL703baZ73WOt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b613571c686169f29217f62ecc0be10b1f8082520a3745a8b54e30df9a425aa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4NeaLTHN4iWRff2kNesnRN.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4NeaLTHN4iWRff2kNesnRN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14c738cbb47e81cb1c79d1204b1a735045f549d2751a1da67e4bbf59dc4d9d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7mFoG00rX2eKIxlR8vrw3u.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7mFoG00rX2eKIxlR8vrw3u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4b4d6d0b05c30af41226d6031d75f8ced68f873739a9d435f417eb9a4c5a15. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2oHYENLPLOYZag7N8YZ8iO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2oHYENLPLOYZag7N8YZ8iO.
{"copyright_id":"0x35574c31be118f3908b47579bce6cf58fe9caad18ecdc1c2bac56633600f7d66","isrc":"DEWW42400054","name":"Where Did You Go","registered_at":"2026-06-25T10:46:40Z","spotify_id":"6W2vXXd80m2XSYXXMu1OCB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35574c31be118f3908b47579bce6cf58fe9caad18ecdc1c2bac56633600f7d66. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6W2vXXd80m2XSYXXMu1OCB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6W2vXXd80m2XSYXXMu1OCB.
{"copyright_id":"0x242252889f18659faebaba999de1602cd0afe838c503e692988d5fe09bd33e3b","isrc":"DEWW42400019","name":"Don't Let Me Go","registered_at":"2026-06-24T19:16:11Z","spotify_id":"2OYZAFZPBoTxrytJpCl9gr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242252889f18659faebaba999de1602cd0afe838c503e692988d5fe09bd33e3b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2OYZAFZPBoTxrytJpCl9gr.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2OYZAFZPBoTxrytJpCl9gr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac87ba03903f6db0e92cf0ed0730e69d0b5d914b3a9041bbb34cb505fc4edc8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7LXpmN7Apk9XLUtEgqCtXd.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7LXpmN7Apk9XLUtEgqCtXd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ae72ebff810162fe9f215a4fc76237f1652a4a9ac92b09b5b63824603ceb44. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5GxI2y6GNBDfesGXQdXQ6G.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5GxI2y6GNBDfesGXQdXQ6G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86197844f1ddb58e0244113b7a31dc31b3341609b83ee6a6e8398c9659ad2a52. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2psQW1DTkZCHnu8AVoUR4N.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2psQW1DTkZCHnu8AVoUR4N.
{"copyright_id":"0x48be7017cbe7d9ab05b3efdcf1c03712a1c148fe9a0cbf78ea823b7eee69c99d","isrc":"DEWW42300074","name":"Kiss Me","registered_at":"2026-06-04T16:30:17Z","spotify_id":"5FF9vuEU85mmbQ3gijVHWP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48be7017cbe7d9ab05b3efdcf1c03712a1c148fe9a0cbf78ea823b7eee69c99d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5FF9vuEU85mmbQ3gijVHWP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5FF9vuEU85mmbQ3gijVHWP.
Anything For You (sunsets & sandals Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc18bd7967169f7579c3ec7ceeb8646a9ca86028c4508d44add6929d9144c4c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4pdbyat34v6BSivxyjbJAl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4pdbyat34v6BSivxyjbJAl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baf1ad81b774c98d2e8906e492adc3f177c8e5787c286eb24e87ac314146310. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6da6Ygbd8bi1N1Ah6Rxrgm.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6da6Ygbd8bi1N1Ah6Rxrgm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91afa72c5325372470c52e5f14cfb26ecd0dcd41765df730a256f1b81f025033. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2CQ81GeRgwie8iEWFXHEZZ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2CQ81GeRgwie8iEWFXHEZZ.
Falling For You (sunsets & sandals Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5476e322483b9c0de15c8390ef5149f87ff3d96e4c6564144ebaf256c26b95e6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6KGwEdgCHXMh0cFmAKhxc7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6KGwEdgCHXMh0cFmAKhxc7.
Without Your Love (sunsets & sandals Remix)
{"copyright_id":"0xb1b84add28e301cd8e4e4383f5fa8835e7744fe718584b1bdfe53a86fb390684","isrc":"DEWW42100372","name":"Without Your Love (sunsets & sandals Remix)","registered_at":"2026-06-08T11:56:30Z","spotify_id":"365FYGmERO5qk4W2AvV92P","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b84add28e301cd8e4e4383f5fa8835e7744fe718584b1bdfe53a86fb390684. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/365FYGmERO5qk4W2AvV92P.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/365FYGmERO5qk4W2AvV92P.