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 0xcf1a7c6bb36e0917656dbb22d9c33ca5e5e30029117fcc486b1b9ba0d33ebb80. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52883e1b-0624-42fc-8916-ca0db3aa949a.json and https://artists.proofprofile.net/proofs/artist/52883e1b-0624-42fc-8916-ca0db3aa949a.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 0xc5f3a775afe03c54c7703daaccd954790402fc1f17fe49a1bbb75539c9a9c93b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7CDzae9TaAywrO1VSZOt4c.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/7CDzae9TaAywrO1VSZOt4c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec50992f820b3945a46d6970a723a6289329ace7be6cf3ddcb32b3647b0fe16. 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/5sdgUBxKR6XKlryKwwulwZ.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/5sdgUBxKR6XKlryKwwulwZ.
{"copyright_id":"0xf14be0b2e945559ca2bdbe524984d3fde2a6db769e4b91b07b2d405cac3fae42","isrc":"GBSMU4137500","name":"DNA Scam","registered_at":"2026-06-07T16:29:09Z","spotify_id":"5tjDUinJppUHVNRMnKXhMb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14be0b2e945559ca2bdbe524984d3fde2a6db769e4b91b07b2d405cac3fae42. 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/5tjDUinJppUHVNRMnKXhMb.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/5tjDUinJppUHVNRMnKXhMb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c799f141d3138e6fc8b64e37e22cdde41f37241fa568183c1a07596674c0e3. 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/35ET2SMthCWH7qWYtp14ow.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/35ET2SMthCWH7qWYtp14ow.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df4d4d46fc241ef1438dbb08f7fca08ef86f3bdfc9754a2857b802eb3a90c15. 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/6RUSmqAvUuMPh9nJXyhiDi.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/6RUSmqAvUuMPh9nJXyhiDi.
{"copyright_id":"0x7a1738691f080ab60499050b50618cca71b54e182010bb948622f5095aeb157d","isrc":"GBSMU4137503","name":"Black Vans and Harsh Realities","registered_at":"2026-06-09T13:00:21Z","spotify_id":"2poNnoyyh6GlSEI4CNgKPw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1738691f080ab60499050b50618cca71b54e182010bb948622f5095aeb157d. 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/2poNnoyyh6GlSEI4CNgKPw.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/2poNnoyyh6GlSEI4CNgKPw.
{"copyright_id":"0x8d71da25ecba44f37c66086f7d291b54fcead5d8530812c35b876849b6365821","isrc":"GBSMU4182492","name":"Queer Recovery Club","registered_at":"2026-06-06T14:24:22Z","spotify_id":"4ZmNfDu3R8P8KLlCMfQPuz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d71da25ecba44f37c66086f7d291b54fcead5d8530812c35b876849b6365821. 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/4ZmNfDu3R8P8KLlCMfQPuz.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/4ZmNfDu3R8P8KLlCMfQPuz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04d1fecb8cae24c081627f5336a1fd22209bb327a4552185f5b4906416d0420. 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/7u4qROVgWkluMWbGRFacVN.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/7u4qROVgWkluMWbGRFacVN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb886194bfa06c88a988e78fda4a55e292ec864720bfa380b6f65b26cf37f7736. 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/1qX0CyCtCK3vdnrqpn1GwP.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/1qX0CyCtCK3vdnrqpn1GwP.
{"copyright_id":"0xf43eb9ab0a8ff4c74e7fb93f03574f6da1dc4333b71bf5386528fe693bfc2389","isrc":"GBSMU4137507","name":"Big Brother","registered_at":"2026-06-07T04:50:29Z","spotify_id":"4xRS93DBaiFdKBmSyF15zp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43eb9ab0a8ff4c74e7fb93f03574f6da1dc4333b71bf5386528fe693bfc2389. 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/4xRS93DBaiFdKBmSyF15zp.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/4xRS93DBaiFdKBmSyF15zp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653d3feba4c08911986eb39819633861676d09153d1658dd9121024c31043e62. 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/2Jt5YRI0XK40y200XouDaS.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/2Jt5YRI0XK40y200XouDaS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27aea06794faa144b30463354a3e59861d6d4b63a4d45b91d0a1ac51ace5c16. 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/6kmiqil3P1JUgK4SduNS09.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/6kmiqil3P1JUgK4SduNS09.