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 0xffac163246179854e277499b7ebe9eafcc0189d195558224b2d755bb325031f6. 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/4a00c196-0703-4c90-94da-04a6a6b09845.json and https://artists.proofprofile.net/proofs/artist/4a00c196-0703-4c90-94da-04a6a6b09845.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 0xfacdb79df62d88b802a66cf19be5a427fa204b2fb82bb278c0435c2c245ad238. 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/2ZX6gdHFhKaS8WKCpRw1Sa.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/2ZX6gdHFhKaS8WKCpRw1Sa.
{"copyright_id":"0x8b8fa5fc4d197a80eac0246e3007d3dcd354da8c375fb7fc196f0aacc7c2da18","isrc":"QMTM62300660","name":"Makes Two of Us","registered_at":"2026-06-20T15:07:49Z","spotify_id":"2MwAO8OyGTSNfkErO1JjlX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8fa5fc4d197a80eac0246e3007d3dcd354da8c375fb7fc196f0aacc7c2da18. 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/2MwAO8OyGTSNfkErO1JjlX.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/2MwAO8OyGTSNfkErO1JjlX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664b58b156f3692928476d32381a3368d5647060feb498eb7b442198d3052a30. 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/7D3f96klANb15epOqOVrns.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/7D3f96klANb15epOqOVrns.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94368788b83d10e770ea6b13159b88c1299df986932344239721b910a91aadb5. 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/26F5qKkrE8nLvsXwnin4sS.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/26F5qKkrE8nLvsXwnin4sS.
{"copyright_id":"0x31c59b59eeaaa384c1d94771715b88e15c38fb564eaa47b25e52aea93753b2b4","isrc":"QMTM62300588","name":"Shoulda Called Her","registered_at":"2026-06-06T07:12:12Z","spotify_id":"77S7vhaajwYpFIBEbVcj0M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c59b59eeaaa384c1d94771715b88e15c38fb564eaa47b25e52aea93753b2b4. 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/77S7vhaajwYpFIBEbVcj0M.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/77S7vhaajwYpFIBEbVcj0M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585b6e946f3cda78d8d39d8b09e04b5f8fe8fa5353f0f907e7f6e7c88ffd60ec. 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/3vDRPNARUjauckJY6VnmG0.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/3vDRPNARUjauckJY6VnmG0.
{"copyright_id":"0x2c45b31cbed09e6b8c476bc30d81830675619ec9fa6a7d57004ee80505c710d5","isrc":"QMTM62300586","name":"Dancing On My Own (Acoustic)","registered_at":"2026-06-04T16:50:46Z","spotify_id":"7jpGisnmzJn0Ic2fChstTa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c45b31cbed09e6b8c476bc30d81830675619ec9fa6a7d57004ee80505c710d5. 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/7jpGisnmzJn0Ic2fChstTa.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/7jpGisnmzJn0Ic2fChstTa.
{"copyright_id":"0x64aece7115d4c3abcaa73abcee4c56832964fdd63f5d7cae50b1318296bf364c","isrc":"QMTM62300665","name":"Boat Somewhere","registered_at":"2026-06-08T15:50:51Z","spotify_id":"2vUOXdktyaDTAi6Api6yCb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aece7115d4c3abcaa73abcee4c56832964fdd63f5d7cae50b1318296bf364c. 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/2vUOXdktyaDTAi6Api6yCb.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/2vUOXdktyaDTAi6Api6yCb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64369c68fd9a17a61cdbe11f42d9dbfc32425805b9ce040482da492e49e7dc84. 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/1B6j0noYfalliUsv2AMakT.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/1B6j0noYfalliUsv2AMakT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacdb79df62d88b802a66cf19be5a427fa204b2fb82bb278c0435c2c245ad238. 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/1uvxgtub61wjS2dC2s0aac.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/1uvxgtub61wjS2dC2s0aac.
{"copyright_id":"0xb824ee8c51d28f2ac3e6b1485e7f493b62d9a4b5dffbb0cac184f8062bed57e8","isrc":"QMTM62300670","name":"Outside Lookin’ In","registered_at":"2026-06-07T10:21:35Z","spotify_id":"1IvcYn4ULohWCfPHqNb8vS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb824ee8c51d28f2ac3e6b1485e7f493b62d9a4b5dffbb0cac184f8062bed57e8. 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/1IvcYn4ULohWCfPHqNb8vS.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/1IvcYn4ULohWCfPHqNb8vS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd06780b008907189f4cdaac73b65a1b7ee0646b2fc30e3916749c102e6a33e. 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/5QFHUFG8ARDUFUSW5yL6Zc.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/5QFHUFG8ARDUFUSW5yL6Zc.