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 0xd6990a56a6f0f3d6c4d60aedc842a188fecc334e14a4fdae483bbdc05221040c. 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/552ef387-593c-4339-bc4f-3c0d4f94d589.json and https://artists.proofprofile.net/proofs/artist/552ef387-593c-4339-bc4f-3c0d4f94d589.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 0xeb19584a82cc4f514876ba55951f8640510d1d499883f59b82efb597c9a94462. 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/4UhqZXLvcZbn63rrKTC6U9.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/4UhqZXLvcZbn63rrKTC6U9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c99ac3fc12c44f4944eb68468c79a5650236061e4cfcf5806005be037be5b1. 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/2ppknjRLkyGJEqhsLtPwGd.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/2ppknjRLkyGJEqhsLtPwGd.
{"copyright_id":"0x775c6a0020133253e3f2f63ce126d57d369973da9691fef6a9d8b725843c5f4c","isrc":"QZ5AB2313051","name":"Varias Siliconada","registered_at":"2026-06-19T08:03:40Z","spotify_id":"0NLLvYHhDFHWipCJSSVwch","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775c6a0020133253e3f2f63ce126d57d369973da9691fef6a9d8b725843c5f4c. 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/0NLLvYHhDFHWipCJSSVwch.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/0NLLvYHhDFHWipCJSSVwch.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22a5936d2a1c77b63e489d959da140d4448c24784f5638c4cea6602597b85bb. 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/77HIoXpdLWwssaU19XZQDH.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/77HIoXpdLWwssaU19XZQDH.
{"copyright_id":"0xaa2a019c174716394f94dec1cc23e0f15790ec94ea12ab7feccb6ca6f5e0a023","isrc":"BXG6R2300005","name":"Sair Pro Pião","registered_at":"2026-06-10T17:37:37Z","spotify_id":"27pVATRwVzaCIsous23iNY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2a019c174716394f94dec1cc23e0f15790ec94ea12ab7feccb6ca6f5e0a023. 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/27pVATRwVzaCIsous23iNY.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/27pVATRwVzaCIsous23iNY.
{"copyright_id":"0xc09b899bed1cb2e1289d372ffa0f22982381ce02b362a49a68649eaf8b4a6fe5","isrc":"BXG6R2400973","name":"Gosto de Ouro e de Prata","registered_at":"2026-06-04T09:29:06Z","spotify_id":"27R0ATLvipwQagEES5qFMg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09b899bed1cb2e1289d372ffa0f22982381ce02b362a49a68649eaf8b4a6fe5. 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/27R0ATLvipwQagEES5qFMg.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/27R0ATLvipwQagEES5qFMg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1455780314ec82e6d0f321617f96c2e0b1f31821a3f2a1c41a9d0bd5b8c1e5e. 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/3wAuesUSylAzeOq582mp5H.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/3wAuesUSylAzeOq582mp5H.
{"copyright_id":"0xaa2a019c174716394f94dec1cc23e0f15790ec94ea12ab7feccb6ca6f5e0a023","isrc":"BXG6R2300005","name":"Sair Pro Pião","registered_at":"2026-06-10T17:37:37Z","spotify_id":"4M0rvgS5Qmtj11YbdiDEQn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2a019c174716394f94dec1cc23e0f15790ec94ea12ab7feccb6ca6f5e0a023. 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/4M0rvgS5Qmtj11YbdiDEQn.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/4M0rvgS5Qmtj11YbdiDEQn.
{"copyright_id":"0xc09b899bed1cb2e1289d372ffa0f22982381ce02b362a49a68649eaf8b4a6fe5","isrc":"BXG6R2400973","name":"Gosto de Ouro e de Prata","registered_at":"2026-06-04T09:29:06Z","spotify_id":"7q1UyGS3xZj7Nxhxmg5dvk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09b899bed1cb2e1289d372ffa0f22982381ce02b362a49a68649eaf8b4a6fe5. 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/7q1UyGS3xZj7Nxhxmg5dvk.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/7q1UyGS3xZj7Nxhxmg5dvk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac4c589257490812daa5ac12a77742babe3b9b35e6b095a7008d22d0cffb5f1. 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/5U5W9ebRVTZZhsOMPp036B.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/5U5W9ebRVTZZhsOMPp036B.