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 0xc7478b7cd7623cb4848fc02253389d68f7ec340e7844a825a7cfb491dea9f333. 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/62ffe0f0-2aed-48c4-9096-7917e148fa34.json and https://artists.proofprofile.net/proofs/artist/62ffe0f0-2aed-48c4-9096-7917e148fa34.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 0x00355a39b79928566542808900b1779109c1b0bc9fc6b65be40fd6683b34e493. 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/4oLSGyNJSCdCNBN9yMV2N8.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/4oLSGyNJSCdCNBN9yMV2N8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39e02c8ac45c83f1b7da15152a654c8e23af22cea7a2f4f0283c258ca3108f1. 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/286S8Z0eiEJgkMABTN4TpM.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/286S8Z0eiEJgkMABTN4TpM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d971b7f7d66558339bc2edae471f0823410d0e84054b2f6047685eff0969b69. 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/5rTrkLXURerAcbljckcqdT.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/5rTrkLXURerAcbljckcqdT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6140ec3ff0aab4c39478d333d61b49d3479806150fcf82f5eaca3f2e6336c85. 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/4NfpidN2uEOYOn2qeIxe9d.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/4NfpidN2uEOYOn2qeIxe9d.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72099d319bdf63beb9490badcf12a4618db5a5890efa90e49d5f1826c755010f. 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/2GLUHa9vGHBBJNlXq8YXNZ.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/2GLUHa9vGHBBJNlXq8YXNZ.
{"copyright_id":"0xe6f0012941c114aad285c60caa1e7feabec37002b7826bda55b468cd4e4fa32f","isrc":"BXIV82291451","name":"Sem Facção","registered_at":"2026-06-27T14:14:37Z","spotify_id":"0rIducEHJqnlLFUpVDdtNh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f0012941c114aad285c60caa1e7feabec37002b7826bda55b468cd4e4fa32f. 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/0rIducEHJqnlLFUpVDdtNh.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/0rIducEHJqnlLFUpVDdtNh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb216338cd9ec2c10c98c621f39f925d7d24cbafc189dbb5728c4100b559cae3f. 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/1pc8HM0wVjE7TFdiTuAbbD.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/1pc8HM0wVjE7TFdiTuAbbD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca2d2196cff19180e5be83ccc83279149e44b20c01d31e3aac0fba77a3669d3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/33J0mOVc0MBngjsTuyk7N8.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/33J0mOVc0MBngjsTuyk7N8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc080ac588a567175e77817799979b68a3715404222cb6e2d85079ebb4f9dbde3. 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/24eYYPOA2pjri0OvGdxO85.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/24eYYPOA2pjri0OvGdxO85.
{"copyright_id":"0xa04cc5ad4d81df08f2d13b060f66e0e7f6dbf7fe99a629bfd2572b3bf3f8b9f6","isrc":"QZWDD2287607","name":"Se For Pra Somar","registered_at":"2026-06-04T07:05:33Z","spotify_id":"3ALHbM0GM6zxrke6upBx9h","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04cc5ad4d81df08f2d13b060f66e0e7f6dbf7fe99a629bfd2572b3bf3f8b9f6. 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/3ALHbM0GM6zxrke6upBx9h.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/3ALHbM0GM6zxrke6upBx9h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd6b2883a83adb7ee47dcdd3641689f2c705072a4397cc092b2ca4d1857353e. 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/7h5lgxhgumRmr4oA0VYa2k.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/7h5lgxhgumRmr4oA0VYa2k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83318918e70eb15ca6e68465d6f2045d96ed61af12037b8fdeabcc8db7e4e6ab. 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/4VP8Gl8QIi3U68gUhueITM.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/4VP8Gl8QIi3U68gUhueITM.
{"copyright_id":"0xa5024728c65cdfb1a8bb9a96a0a73679f00aff5c485e7c6000ba712f7056f88d","isrc":"BXIV82082446","name":"Ronaldinho Pt. 2","registered_at":"2026-06-25T12:17:23Z","spotify_id":"0GBebRqsvrpsSYSGCUZXcJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5024728c65cdfb1a8bb9a96a0a73679f00aff5c485e7c6000ba712f7056f88d. 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/0GBebRqsvrpsSYSGCUZXcJ.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/0GBebRqsvrpsSYSGCUZXcJ.
{"copyright_id":"0x6f6b94d83e4011a71c00db03654cf923a47e0b345440b7d6adb7bf86ace5daf9","isrc":"QZHZ31936160","name":"Glock Cantou","registered_at":"2026-06-10T06:44:56Z","spotify_id":"7u9uNlWQ8LJfIDiK6Ii6IG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6b94d83e4011a71c00db03654cf923a47e0b345440b7d6adb7bf86ace5daf9. 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/7u9uNlWQ8LJfIDiK6Ii6IG.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/7u9uNlWQ8LJfIDiK6Ii6IG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a1f37dbab873b9f9a2030c4b6de2e8d7d32a7eea1895e157b88ba129b879a3. 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/10xHsqw3zyr0ksTpo9H8dV.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/10xHsqw3zyr0ksTpo9H8dV.