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 0x06bb8759a311e5b4d49e20f7deb86a04239235656936fe4331f07a1ba656dfb4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5beb8efd-1827-4915-93f1-22672ad2909f.json and https://artists.proofprofile.net/proofs/artist/5beb8efd-1827-4915-93f1-22672ad2909f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x9622d3ce8b43854bc97841f9732f9040406d3a27d2444c7e397af4df5d47cf7d. 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/45kFdLMxxXsRfm8kABgsTg.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/45kFdLMxxXsRfm8kABgsTg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478cd0dad8325902ca10255abec9a084733abbf1333a517c598592863c78be86. 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/6mL5fmDwQnUf6eYTKl68uf.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/6mL5fmDwQnUf6eYTKl68uf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19778b26db90b5d5ce43c4038f1b23c2754197d9da7e204050d3b3cd71cc80e. 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/0syE3neVGGE6F1T7e4cRj7.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/0syE3neVGGE6F1T7e4cRj7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3203526006fe0f302afd6428b36e49c67443802b15b2de85eaee572b0b4424. 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/0VdBxLmYD7dN7SOZZ4TEoO.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/0VdBxLmYD7dN7SOZZ4TEoO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79d968099069374a84a8f9b698debd959e32f3b1408657b6bf3f30922d9fdb2. 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/1xr60ad0ceUktHQ1qDn44Q.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/1xr60ad0ceUktHQ1qDn44Q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e7cf2c2b6e4c9e08462fe930ba29b017058fb22f89680415233cbdccb20bfe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3C9ymHMmGsH2Us3fLYEu3E.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/3C9ymHMmGsH2Us3fLYEu3E.
{"copyright_id":"0x77091653b0e179895743b0d8e778ea7b0cab985a59a52284ee1e601edb178fcb","isrc":"GBUM72206561","name":"Goodbye For Good This Time","registered_at":"2026-06-11T19:30:35Z","spotify_id":"76CPp0CZcANwffiytgzrUQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77091653b0e179895743b0d8e778ea7b0cab985a59a52284ee1e601edb178fcb. 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/76CPp0CZcANwffiytgzrUQ.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/76CPp0CZcANwffiytgzrUQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9daf148d79188f711cc5b9e4cb7889c2cf497fc10b93f20ee75d62179d72b8f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Lfn01IwHSurMHtPHnqlIi.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/7Lfn01IwHSurMHtPHnqlIi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693bd4b48c9c0872574bdf99cd992fc7757c1b24f96a52c6496be783a205b4ef. 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/6xGzsGeBnYK5sAsUbJIjSq.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/6xGzsGeBnYK5sAsUbJIjSq.
{"copyright_id":"0x04d62b7d1d92d9eebd012f8c8ec6b6d4a19854802bfd3064be0a53ab7c09cbcc","isrc":"GBUM72206557","name":"Angels (Can't Help You Now)","registered_at":"2026-06-18T07:10:57Z","spotify_id":"45Xf2iT30Xou8k3RjgSgIc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d62b7d1d92d9eebd012f8c8ec6b6d4a19854802bfd3064be0a53ab7c09cbcc. 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/45Xf2iT30Xou8k3RjgSgIc.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/45Xf2iT30Xou8k3RjgSgIc.
{"copyright_id":"0xb3eb3ea7548d90b116ea8fa4b8f92c545cb04e850d05787273e92b6c96f1afe5","isrc":"GBUM72206558","name":"Bringin' On The Heartbreak","registered_at":"2026-06-09T21:25:47Z","spotify_id":"0KrmHQeLVKDchVuCe2s4R3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eb3ea7548d90b116ea8fa4b8f92c545cb04e850d05787273e92b6c96f1afe5. 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/0KrmHQeLVKDchVuCe2s4R3.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/0KrmHQeLVKDchVuCe2s4R3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eccc30296af2e585fb6ee0d53b9da0f6225700253d09556b476f506a74be93e. 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/02ryk6Mj1TSKbhc37DgF7G.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/02ryk6Mj1TSKbhc37DgF7G.
{"copyright_id":"0x53d8ecb4e7142af98508e4398d6a39a7ef94fcd7dd6485fd86098989ad1fd00d","isrc":"GBUM72206563","name":"Have You Ever Needed Someone So Bad","registered_at":"2026-06-08T23:43:49Z","spotify_id":"1uLVbt128bwagbw9VFiOwG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d8ecb4e7142af98508e4398d6a39a7ef94fcd7dd6485fd86098989ad1fd00d. 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/1uLVbt128bwagbw9VFiOwG.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/1uLVbt128bwagbw9VFiOwG.
{"copyright_id":"0xe2bf5448febae80e13ba05a96c4ca50246bf53e409699c9b1da0d8f6d49bc1dd","isrc":"GBUM72206564","name":"Too Late For Love","registered_at":"2026-06-09T21:35:32Z","spotify_id":"2QULQxZouCRfIKn5TVv1xw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bf5448febae80e13ba05a96c4ca50246bf53e409699c9b1da0d8f6d49bc1dd. 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/2QULQxZouCRfIKn5TVv1xw.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/2QULQxZouCRfIKn5TVv1xw.
{"copyright_id":"0x9d686cbdef9cd644e9627639bf298a90938e212c906cc97eede4dfbd899e765b","isrc":"GBUM72206565","name":"When Love & Hate Collide","registered_at":"2026-06-08T15:16:43Z","spotify_id":"1kZ9VG5ctd4LGWS5UhqmXt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d686cbdef9cd644e9627639bf298a90938e212c906cc97eede4dfbd899e765b. 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/1kZ9VG5ctd4LGWS5UhqmXt.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/1kZ9VG5ctd4LGWS5UhqmXt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cfeaf426da536269da85b919009f9a64bc270352dfebe7cc31561cd9be3997. 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/5W5W9hL53CO75PWsq1IUvs.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/5W5W9hL53CO75PWsq1IUvs.