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 0x8061e48af176056dca3d79fb071bcae53b3230a36a8f54baf4e1438d73f84807. 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/88f22ad7-35c9-47d1-ae9f-569f416d01c8.json and https://artists.proofprofile.net/proofs/artist/88f22ad7-35c9-47d1-ae9f-569f416d01c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x042890a95e05b819dfea9a80c8ec98332c35aef91daec6616fe45a0a515bcdb2","isrc":"QZW9L2324003","name":"Tropa do Perigo","registered_at":"2026-06-08T20:18:05Z","spotify_id":"0joJbyyDYIEQ30T7uuu6CI","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 0x042890a95e05b819dfea9a80c8ec98332c35aef91daec6616fe45a0a515bcdb2. 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/0joJbyyDYIEQ30T7uuu6CI.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/0joJbyyDYIEQ30T7uuu6CI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc359b3803be7dc43420286009b2ad7f954445f7e6b036ed690c37a2f16142b. 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/4nXdyc2jMEDh4vohl3xPqd.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/4nXdyc2jMEDh4vohl3xPqd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2600df9259b25190079b1d34fd7824963bed60303b7f79f7f50e12ff32532f6a. 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/4gbj2s9d6X5ImSfTLbtkCV.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/4gbj2s9d6X5ImSfTLbtkCV.
{"copyright_id":"0x4add176727a7e5b6b6322cf9d27b39e2f42e875c3ba9e7c0310c06af02d76c59","isrc":"QZGLM2579797","name":"Desordem no Tribunal","registered_at":"2026-06-05T16:58:23Z","spotify_id":"1Q43jrk6FpdZeMAN0up6fx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4add176727a7e5b6b6322cf9d27b39e2f42e875c3ba9e7c0310c06af02d76c59. 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/1Q43jrk6FpdZeMAN0up6fx.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/1Q43jrk6FpdZeMAN0up6fx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810be86e1032a91491e852dc2a738d73ec20fe641bc0474bd116796fcc7e09ed. 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/5JX7KJCmG7M7OsEIf7yrLq.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/5JX7KJCmG7M7OsEIf7yrLq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0025d47cae18784941bc9fba55170b803fab256ab04a389d20dd50144cf71285. 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/3cLtZcjLs33QYC3iKv1WWp.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/3cLtZcjLs33QYC3iKv1WWp.
{"copyright_id":"0x39d4142a2dbdf54df9d44a527c5f3d13f3c27e81bbd51a55a88d5d4822af5f38","isrc":"QZNJX2490570","name":"Tipo Hollywood","registered_at":"2026-06-19T11:28:00Z","spotify_id":"7aHjUrHkSRVnBqbqQ1lhVW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d4142a2dbdf54df9d44a527c5f3d13f3c27e81bbd51a55a88d5d4822af5f38. 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/7aHjUrHkSRVnBqbqQ1lhVW.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/7aHjUrHkSRVnBqbqQ1lhVW.
{"copyright_id":"0x5184a59c5d28c3e48fdd00ec6e7c9f585f3709111cdb21d5e1986d300e51bdc3","isrc":"BKFUX2301752","name":"Chama Poc Poc","registered_at":"2026-06-25T21:21:14Z","spotify_id":"4IhzsSOBviGdRhIjGCt8Sp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5184a59c5d28c3e48fdd00ec6e7c9f585f3709111cdb21d5e1986d300e51bdc3. 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/4IhzsSOBviGdRhIjGCt8Sp.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/4IhzsSOBviGdRhIjGCt8Sp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2291bdad57bd55da901e9a51e109aaf0264a813437f18f203df7d2d7056070. 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/0n1THIqcdyO4se4S10a4X6.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/0n1THIqcdyO4se4S10a4X6.
{"copyright_id":"0x8be51ec01c8a54582ab317e8eb5aa0e8a97fffc5c5e5ed8a3c019a51ad52f17c","isrc":"BC66P2200026","name":"Poc Poc","registered_at":"2026-06-20T06:27:18Z","spotify_id":"1NfFGY2BymFfo613nIaxSo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be51ec01c8a54582ab317e8eb5aa0e8a97fffc5c5e5ed8a3c019a51ad52f17c. 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/1NfFGY2BymFfo613nIaxSo.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/1NfFGY2BymFfo613nIaxSo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04535e93d93395e29bae402a43cf02f2a19c42474dacb9c683e08aa396b931a6. 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/3CdRYd4ZdOddGknBrZW4fk.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/3CdRYd4ZdOddGknBrZW4fk.
{"copyright_id":"0xdd9b31774441c0db935bd038da2ce6c53c62b4bdac00ab7822cf8fe903e0810b","isrc":"QZNJW2479541","name":"Mina Surtada","registered_at":"2026-06-23T09:02:41Z","spotify_id":"0u30jh0RJpLGmXg6yI1yw9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9b31774441c0db935bd038da2ce6c53c62b4bdac00ab7822cf8fe903e0810b. 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/0u30jh0RJpLGmXg6yI1yw9.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/0u30jh0RJpLGmXg6yI1yw9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf434c64d294e273a60012ded11e2d8c53d500216a22c9c2073461dfb0150dd3d. 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/2yfNkvZidxdmLaFEoWx3H4.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/2yfNkvZidxdmLaFEoWx3H4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74ca933df48288392c54c9da0d338f1d081987aff7b26f7f4626316707856c9. 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/2H07KoQF3M0RIbTBHl4Dh7.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/2H07KoQF3M0RIbTBHl4Dh7.