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 0x9539aa817e432e17e47cf97e1df79bce1cfb22e4f5b9339ff08214d675cbed4a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38bce1f0-6a32-489d-9d84-72206960e283.json and https://artists.proofprofile.net/proofs/artist/38bce1f0-6a32-489d-9d84-72206960e283.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xf6a91236a34318efaa5746c9baae36f67be88d27c263ad32a8db2e3d0ca65557","isrc":"PEBQ91400314","name":"Avenida Larco","registered_at":"2026-06-04T09:02:01Z","spotify_id":"1UC6KI4TujcN8L8VZtrbec","type":"track"}
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 0xf6a91236a34318efaa5746c9baae36f67be88d27c263ad32a8db2e3d0ca65557. 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/1UC6KI4TujcN8L8VZtrbec.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/1UC6KI4TujcN8L8VZtrbec.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b70e76caa9d62da3786b8c231dac08bdb04158c9c20eb5fca120c86701c4480. 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/4Wyu1gveROYOm6HmX1LCXr.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/4Wyu1gveROYOm6HmX1LCXr.
{"copyright_id":"0xccd0d4256a79866039b59d684870d6f9c2258214a2301e2f5edbea7dcdb436d6","isrc":"PEBQ91400316","name":"Pastas, Pepas y Otros Postres","registered_at":"2026-06-25T04:34:10Z","spotify_id":"075jqJW3IH1hqBk8mkSwwo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd0d4256a79866039b59d684870d6f9c2258214a2301e2f5edbea7dcdb436d6. 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/075jqJW3IH1hqBk8mkSwwo.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/075jqJW3IH1hqBk8mkSwwo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee22bd39f6e649a1426dfded56128994f37e556da7c678b7cce2448eb8ba2d3b. 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/2FvHAItmS32MG6Ugy1WEes.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/2FvHAItmS32MG6Ugy1WEes.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8ac89a00a0f8b5ec232dc27ee1f1a2dbc361982bbe0e06538390944125782e. 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/4XvyCk5GTJCFkhE4ENgZqo.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/4XvyCk5GTJCFkhE4ENgZqo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf025e734059c7ea9c368f998ef8a78a82e8d29bbb644d0b8b21f498eadb451. 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/7bTIBEjNGm1aAlp5KKJMlz.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/7bTIBEjNGm1aAlp5KKJMlz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff0d5278b17488b1b74957d56e2b18433610caea896bc9a6ca2372e8d815060. 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/4XB9L51f3sFKaESo4Oi8iS.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/4XB9L51f3sFKaESo4Oi8iS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41626db010f0a83fb9673ba7740c942e4786ba19eb95dab04fffc6aa55b7ed02. 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/33Sma7M2gsAVedHYF7pbNF.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/33Sma7M2gsAVedHYF7pbNF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c38ea2cf9e96b9649e4ca23c81e05328a0361e27f5f9ba77f38a18f2408886e. 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/2TQMq2KxNT919CRvqWAcII.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/2TQMq2KxNT919CRvqWAcII.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f06d367f628a7bd80fa244614deec24588bd3f0acf7eec12a7a068226b37be3. 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/0erYczYtLnSRlfribXaVG1.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/0erYczYtLnSRlfribXaVG1.
{"copyright_id":"0x940334ff6bdac5950ec17a6fe6245d5333ef1e5dccd748a7e850bb0f8be0d574","isrc":"PEFR29002003","name":"Aquella Niña","registered_at":"2026-06-25T04:33:14Z","spotify_id":"5EC8Xa7mpaSCyy0d8yyK2I","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940334ff6bdac5950ec17a6fe6245d5333ef1e5dccd748a7e850bb0f8be0d574. 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/5EC8Xa7mpaSCyy0d8yyK2I.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/5EC8Xa7mpaSCyy0d8yyK2I.
{"copyright_id":"0x4cdc53b72f291ec05f9f57999e1c3f3c01dcfbf4bc7abd7dd631eeea0d5e648d","isrc":"PEFR29002004","name":"La del Brazo","registered_at":"2026-06-18T08:33:10Z","spotify_id":"7LrGz4rI5iMA6lBNXQkgaU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdc53b72f291ec05f9f57999e1c3f3c01dcfbf4bc7abd7dd631eeea0d5e648d. 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/7LrGz4rI5iMA6lBNXQkgaU.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/7LrGz4rI5iMA6lBNXQkgaU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c33c1e2f8f5a9b7a954c325786224ebd5cbe4ae8b1566203c39d708f7faa3c. 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/5wm6L0NnRNrGwpwUX20eL4.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/5wm6L0NnRNrGwpwUX20eL4.