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 0x6d8b3ecab2d4ec74a49ae7dd2eddf8f6f8fa535bfbbb71d50cf8ff4fcf052d6e. 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/13f5e872-b322-4234-bccf-2845164624aa.json and https://artists.proofprofile.net/proofs/artist/13f5e872-b322-4234-bccf-2845164624aa.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 0x1056c1b37a3c5aa583ebb34806d6e4dd614aeeb6ebacaacd81f88dc40b4f849a. 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/4WeEi7Nmt9DLlBAsh8sWaN.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/4WeEi7Nmt9DLlBAsh8sWaN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfdc809a9de0f35227f3b7b838c20265bbf5cc0a63c6364408db47c6c14cf93. 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/6s7E98oVK8LRLqlsrwefbR.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/6s7E98oVK8LRLqlsrwefbR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc712a953ea6ce3ec71e3f00591eecf59182c5f9675eb2043e5226ad9e2d92c1b. 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/6pgiq65YJa3Ptoex2SgeWm.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/6pgiq65YJa3Ptoex2SgeWm.
{"copyright_id":"0xd63bd86d3c6df622dfaf5b3c09cb70d893acc4becd0cfdfa7da438d18ad75f6d","isrc":"USUYG1228986","name":"Ups N Downs","registered_at":"2026-06-08T03:32:32Z","spotify_id":"2qogF5r8ctfZlqQxGklPlz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63bd86d3c6df622dfaf5b3c09cb70d893acc4becd0cfdfa7da438d18ad75f6d. 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/2qogF5r8ctfZlqQxGklPlz.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/2qogF5r8ctfZlqQxGklPlz.
Red Hot Chili Peppers (feat. Pi'erre Bourne & Marvin Cruz)
{"copyright_id":"0x959b1b1b3e144e389330201075965f695aeeec3e4912a1536b70e1dda5cee52e","isrc":"USUYG1227196","name":"Red Hot Chili Peppers (feat. Pi'erre Bourne & Marvin Cruz)","registered_at":"2026-06-05T17:01:34Z","spotify_id":"2oY1WE417vXJqtBaXYA4CI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959b1b1b3e144e389330201075965f695aeeec3e4912a1536b70e1dda5cee52e. 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/2oY1WE417vXJqtBaXYA4CI.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/2oY1WE417vXJqtBaXYA4CI.
{"copyright_id":"0x1f78075769bd8dbb2e81f91e8534d2a6ace52b7654cf68a0aa706e44656a07c5","isrc":"USUYG1228984","name":"San Valentin Sangriento","registered_at":"2026-06-06T08:28:39Z","spotify_id":"4FoyUr2r5PyCXItODNPNjL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f78075769bd8dbb2e81f91e8534d2a6ace52b7654cf68a0aa706e44656a07c5. 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/4FoyUr2r5PyCXItODNPNjL.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/4FoyUr2r5PyCXItODNPNjL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee1e1364e03e55fbde58aed98983d87623293a24dc61af5bbc9c8bc97100f49. 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/2q9hIbXPp8pxpKKrKj75rl.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/2q9hIbXPp8pxpKKrKj75rl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a80a4eac350192816ed1abb408bdcb46ab2d906476fa2665231df90af03201. 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/030XfCuX9uqbhOeGObVPQi.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/030XfCuX9uqbhOeGObVPQi.
{"copyright_id":"0xd74bab927ade8a342402822768c59bca7f451d86f6d76cc623a7a191dd60e859","isrc":"USUYG1228979","name":"101 Dalmatas (feat. Marvin Cruz)","registered_at":"2026-06-05T12:39:33Z","spotify_id":"5lWYNP1Z8myDJBhmWK3yKl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74bab927ade8a342402822768c59bca7f451d86f6d76cc623a7a191dd60e859. 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/5lWYNP1Z8myDJBhmWK3yKl.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/5lWYNP1Z8myDJBhmWK3yKl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820eec9141a1d45375a7c69c911f2aa1141d330394d839c9956063c7b718684e. 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/4G6fhntNzO01jPr2jV8TAk.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/4G6fhntNzO01jPr2jV8TAk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8837bdcb8c89a975178af8fcf6049067673d8dd7dda9c628570a91b445f3d016. 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/44xDy4h27s4ENaC8fKnCoC.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/44xDy4h27s4ENaC8fKnCoC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dbc9ce619bc286d282e71a479d97c96eb970f38be78b8b5ea93de1f45b609d. 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/7Ko2NP7Wi7NJdp4NyZ04pW.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/7Ko2NP7Wi7NJdp4NyZ04pW.
{"copyright_id":"0x7fd3b1208dbdb77e722cbda1b4ea56ac29ed902d34b31d8aab43f6a4ac1698b6","isrc":"ES71G1628137","name":"Fuck Money","registered_at":"2026-06-09T03:43:38Z","spotify_id":"0F4lQrHe5oN245iiZC4oIs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd3b1208dbdb77e722cbda1b4ea56ac29ed902d34b31d8aab43f6a4ac1698b6. 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/0F4lQrHe5oN245iiZC4oIs.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/0F4lQrHe5oN245iiZC4oIs.
{"copyright_id":"0x8c727edc4d2151cf76bebd12eadea95ab71b72c22a93f60dd5de015cfe32a51f","isrc":"ES71G1912343","name":"No Tú (feat. Yung Beef & Pochi)","registered_at":"2026-06-08T03:27:25Z","spotify_id":"7IeP76mumOVvZPe8eBUTMa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c727edc4d2151cf76bebd12eadea95ab71b72c22a93f60dd5de015cfe32a51f. 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/7IeP76mumOVvZPe8eBUTMa.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/7IeP76mumOVvZPe8eBUTMa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf454d044609c6d9d1dc1ef279e9dbf2e14b422a035ef1c871324ac9788a0842. 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/1FeMtq49jeUmSxQb6v370U.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/1FeMtq49jeUmSxQb6v370U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d44c7589b0435550e28573bae89f126c22633d385a60b2ad4a0ba13f7762294. 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/1WmYGS2XvDaYk51MbrQhjW.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/1WmYGS2XvDaYk51MbrQhjW.
Sola (feat. Cold Hart, Yung Beef & Pochi)
{"copyright_id":"0x6e6f5cfe93b79c6b222364acbe13a421ff237955993ee2a9c1967ebbceb9063a","isrc":"ES71G1912350","name":"Sola (feat. Cold Hart, Yung Beef & Pochi)","registered_at":"2026-06-09T17:46:58Z","spotify_id":"2AzQ7iOf2jFijXyEqT0TO8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6f5cfe93b79c6b222364acbe13a421ff237955993ee2a9c1967ebbceb9063a. 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/2AzQ7iOf2jFijXyEqT0TO8.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/2AzQ7iOf2jFijXyEqT0TO8.
{"copyright_id":"0x0baf0d9b95a44974fa8138fdbe69ddd7b64d5bff7fc319b30a112e59837cc89a","isrc":"QM6MZ2165987","name":"Sal Tocado","registered_at":"2026-06-10T05:21:37Z","spotify_id":"5cib1g0nLbfl6zqiEsvgg5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0baf0d9b95a44974fa8138fdbe69ddd7b64d5bff7fc319b30a112e59837cc89a. 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/5cib1g0nLbfl6zqiEsvgg5.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/5cib1g0nLbfl6zqiEsvgg5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6ad0811099dbc6b207b9ddd64f4c6cf1eeb97ed61bfaa0c15d4b36919c7d54. 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/6uZjI3gUeXClYdBMcHFO8Q.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/6uZjI3gUeXClYdBMcHFO8Q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26710cf9705630e6bcfc68a741825a87bad7e447955f23c7851e67d8435606e7. 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/5JCmLN8rym4VZEpvsk0WfJ.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/5JCmLN8rym4VZEpvsk0WfJ.