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 0x36544b57a7ff3612cbea016a2ed8527f22a9a0d77b6cbf761aa3af53de3e4d97. 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/f1aaace7-da76-414a-a367-014c2806aa61.json and https://artists.proofprofile.net/proofs/artist/f1aaace7-da76-414a-a367-014c2806aa61.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 0xfd675cf39a26c5970114fead5eceaa0ea10507c4e6d7b353f3579a934e72b23d. 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/0JS2nQBvx8JDpNadPPlqNb.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/0JS2nQBvx8JDpNadPPlqNb.
{"copyright_id":"0xaa948b8072d95e6cdb30bd0ce3de495b0c2d71fbeda1590dbbeb6733187cd184","isrc":"USANG2253234","name":"The Duke Don't Miss","registered_at":"2026-06-29T10:52:13Z","spotify_id":"41mKUFmr3RuynGk6f9sBRE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa948b8072d95e6cdb30bd0ce3de495b0c2d71fbeda1590dbbeb6733187cd184. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/41mKUFmr3RuynGk6f9sBRE.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/41mKUFmr3RuynGk6f9sBRE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b5bf3c6d0a344bb8cf8e15d9884bf5682d9295da0696107d6dc30244f102a9. 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/4uF76csKmN7qyuCoYFEDQN.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/4uF76csKmN7qyuCoYFEDQN.
{"copyright_id":"0xfc15ce85c90d68cb572219fda88b7748513da4424988d4246f3bcb0049dd4f7c","isrc":"USANG2411704","name":"Days of Wine and Roses","registered_at":"2026-06-28T03:05:28Z","spotify_id":"3qRhlsiKhN8LbmHwhQ9qFc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc15ce85c90d68cb572219fda88b7748513da4424988d4246f3bcb0049dd4f7c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3qRhlsiKhN8LbmHwhQ9qFc.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/3qRhlsiKhN8LbmHwhQ9qFc.
{"copyright_id":"0xfc15ce85c90d68cb572219fda88b7748513da4424988d4246f3bcb0049dd4f7c","isrc":"USANG2411704","name":"Days of Wine and Roses","registered_at":"2026-06-28T03:05:28Z","spotify_id":"5kXjKyDS9xMsLvaVMoIjNm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc15ce85c90d68cb572219fda88b7748513da4424988d4246f3bcb0049dd4f7c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5kXjKyDS9xMsLvaVMoIjNm.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/5kXjKyDS9xMsLvaVMoIjNm.
{"copyright_id":"0x1ad6e891d4f0f8b2498d7bd878a1a6d6632c9211aaf7a5d8e9ce5f818e51d8b9","isrc":"QM3DF2418482","name":"wrong side up","registered_at":"2026-06-17T20:53:59Z","spotify_id":"2pbA6JfHjXp9CdrxjrQvyW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad6e891d4f0f8b2498d7bd878a1a6d6632c9211aaf7a5d8e9ce5f818e51d8b9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2pbA6JfHjXp9CdrxjrQvyW.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/2pbA6JfHjXp9CdrxjrQvyW.