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 0xc584d8ff74a5c9f6ea830bb390a9a5775345de6f24d2f2f036ccd52d1e573072. 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/fed6d85e-3e42-4419-a17b-624ce20fdbd6.json and https://artists.proofprofile.net/proofs/artist/fed6d85e-3e42-4419-a17b-624ce20fdbd6.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 0x579def507078aae520ef4f3d0bf339c30323ce4bce3becf4a785bebedf3e5af8. 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/4hSmhoWceZfpoTopxcvaEr.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/4hSmhoWceZfpoTopxcvaEr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02083d0cbf90dfd1cc32dc61e1f61ec43f254b4032dfeef1d57dc37fd113054f. 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/5iWb1LOSKnG3OXIp4sSWZM.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/5iWb1LOSKnG3OXIp4sSWZM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8edd1d23b197e0508c68dd8688db0186c9cdab5980c43057c6a3c36608be30. 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/4ByJrz4AA2KU3r6YLvtMm8.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/4ByJrz4AA2KU3r6YLvtMm8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85af9a591b565998a104ed7ce7fccdc886e97d164e763d7266ba2aab1b5cba01. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4yfDDnpoWD2XWJWecf7acv.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/4yfDDnpoWD2XWJWecf7acv.
{"copyright_id":"0xdece4f9097e22e30cef00360ed36c60ec05bdca7987d84f25849d801a5533e88","isrc":"QZNWQ2437011","name":"The Power of Everything","registered_at":"2026-06-05T16:30:47Z","spotify_id":"0QCTSPch7uVA344JWcNlIu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdece4f9097e22e30cef00360ed36c60ec05bdca7987d84f25849d801a5533e88. 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/0QCTSPch7uVA344JWcNlIu.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/0QCTSPch7uVA344JWcNlIu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb092c1e066c8d6fc5133a2f411877ce024db995079ea6f34727c3d7e26918b3. 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/7oP6tVzP9Si0UGr2hdOYrA.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/7oP6tVzP9Si0UGr2hdOYrA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85af9a591b565998a104ed7ce7fccdc886e97d164e763d7266ba2aab1b5cba01. 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/2lqYZpmQuNYShHDYHUwdEW.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/2lqYZpmQuNYShHDYHUwdEW.