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 0x956a497f81af7a375d42eed518e8dd20fa0ee3772b75a79fea8b1dcabb2fb4b2. 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/9542d9de-4165-4631-a38a-25a572a2dc38.json and https://artists.proofprofile.net/proofs/artist/9542d9de-4165-4631-a38a-25a572a2dc38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb504e33113d11c6995f3c7e7823c78ec5bb1a72ee5a4d64e1f2ed1e3845d3e06","isrc":"QM8V62357114","name":"SUITE PRESIDENCIAL","registered_at":"2026-06-04T13:02:34Z","spotify_id":"44laHIYcGhxx0IEySoExVj","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 0xb504e33113d11c6995f3c7e7823c78ec5bb1a72ee5a4d64e1f2ed1e3845d3e06. 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/44laHIYcGhxx0IEySoExVj.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/44laHIYcGhxx0IEySoExVj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a26e43cf2710fc95bba1ec04b508ab5869e071307e374e26940ab3e91f5f14d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0G4HpZod8ySWzUZqOq2Ool.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/0G4HpZod8ySWzUZqOq2Ool.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92eb8f98097771aaf9c88a1dd86101e5d96af8206317e5b30b16c740c413651. 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/5KKVP1q1EoI7qJ8FSgvVUH.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/5KKVP1q1EoI7qJ8FSgvVUH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880c5e09b68bcc0e51b88f710f763b0b5a51514418a3c551a687a03e8495dba2. 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/5Mjv1MkQfD2Xyr6FcBrGGh.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/5Mjv1MkQfD2Xyr6FcBrGGh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18b477cca7d183df2b067b43494b5433cafa9eca53e18f6e6a2ab20a0548efa. 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/1WL3EecQiXNTX9dKRbYGiM.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/1WL3EecQiXNTX9dKRbYGiM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e887176152e58cf28142cc176a4485701e87ff81e7f2a836158b342866dbc56. 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/6AeMO8EtXPCuP0zLbUiYZz.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/6AeMO8EtXPCuP0zLbUiYZz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461b1b4f0124dfa2290f72dd6e0c50076711db4aa3db9c4a13e76b83f70aa6a5. 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/4qmFGacxdLSfkn9lki59p6.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/4qmFGacxdLSfkn9lki59p6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53542fd01dca3c6127b7aceef3cff6dd3b66224a0c8e4076414e070ec271c55. 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/4zj5ZfjlbyIZvtbWTHEgnF.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/4zj5ZfjlbyIZvtbWTHEgnF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1369d8f17fbdbb48e70177730c2af063ef3b942201197985db69af9e3dab88ff. 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/7f99R8V9o0l0j7VToQ4ZYp.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/7f99R8V9o0l0j7VToQ4ZYp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd69c27039f1ab1c042d4ccde5e6fab35c285f1d65f45811d0895395b2ea65a0. 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/4Qt2hGzdSgohusG1KiuTTM.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/4Qt2hGzdSgohusG1KiuTTM.
{"copyright_id":"0x8d77eb67e49cb7ca478407bb03de82d7ed7e2d81ccd01aeccdc734b684589609","isrc":"QZWDW2465122","name":"2Pac Love","registered_at":"2026-06-23T22:16:38Z","spotify_id":"1AKr6QUpMEv1NQ6KdWjvuJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d77eb67e49cb7ca478407bb03de82d7ed7e2d81ccd01aeccdc734b684589609. 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/1AKr6QUpMEv1NQ6KdWjvuJ.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/1AKr6QUpMEv1NQ6KdWjvuJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7b5b89f30673bf81ddf8b88f073d5f80a729bdb6320927d20a1192f0c2536d. 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/3nfxFwtCWcM05M0O41m4TA.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/3nfxFwtCWcM05M0O41m4TA.
{"copyright_id":"0xd2e072f789e9fdb981dad1d045bb9cb9f9125bb546807cb9185dbb1051c70d7a","isrc":"QZWDW2465125","name":"Mundo Cochino","registered_at":"2026-06-21T08:26:11Z","spotify_id":"6jqd52svhQMBnnfM9oFhc8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e072f789e9fdb981dad1d045bb9cb9f9125bb546807cb9185dbb1051c70d7a. 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/6jqd52svhQMBnnfM9oFhc8.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/6jqd52svhQMBnnfM9oFhc8.
{"copyright_id":"0x42cfad02eba698af46b0f5016e7eef4af12e78881028d4b491fdd004ed6f1fb1","isrc":"GXBAV2552000","name":"LEWANDOWSKI CLUB","registered_at":"2026-06-06T21:33:41Z","spotify_id":"3N7TLEb0ZWyUjAO3jMDEnl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cfad02eba698af46b0f5016e7eef4af12e78881028d4b491fdd004ed6f1fb1. 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/3N7TLEb0ZWyUjAO3jMDEnl.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/3N7TLEb0ZWyUjAO3jMDEnl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390005111b888d3cc83a8fa7363e1ac301c52ddb4ae7a9f73eb75b65e6534d30. 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/0RXQ1uVmpU6CleL8Sh4Zsc.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/0RXQ1uVmpU6CleL8Sh4Zsc.
{"copyright_id":"0x0a26e43cf2710fc95bba1ec04b508ab5869e071307e374e26940ab3e91f5f14d","isrc":"CA5KR2325916","name":"Sé Que Recuerdas","registered_at":"2026-06-20T19:57:57Z","spotify_id":"5hZY3fPkoxJUZQYb5hovfL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a26e43cf2710fc95bba1ec04b508ab5869e071307e374e26940ab3e91f5f14d. 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/5hZY3fPkoxJUZQYb5hovfL.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/5hZY3fPkoxJUZQYb5hovfL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2a8b0964e42f0e80ad1286a22924165941fd9619de85f03b7d0e27272aed16. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1PHJFdZfzaS8ouV2jJGDwY.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/1PHJFdZfzaS8ouV2jJGDwY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367b21096e15a9b968f24f058c8e9b3d086913ddd92ccda7dc4387159c4733d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Xulh8TQ6Llyzw4y4fBY6w.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/5Xulh8TQ6Llyzw4y4fBY6w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169a369eea8729ad965ac5df8017f433011460127ec63e985e1e8de81adcdbe3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3UMvlH96lKCEX9ID5FACyJ.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/3UMvlH96lKCEX9ID5FACyJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eded299a0e4821292f5c59504476311f3f087868b06ae9bee932b265ded0ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/12yuZbg7m58r5o21tOpyGw.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/12yuZbg7m58r5o21tOpyGw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de7acdf0832835b8e5971ee93e692e3eec9184d08d707fe789a333bf5479e9b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3IZJtqvgKYl90sZKKSRGqY.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/3IZJtqvgKYl90sZKKSRGqY.
{"copyright_id":"0x8d77eb67e49cb7ca478407bb03de82d7ed7e2d81ccd01aeccdc734b684589609","isrc":"QZWDW2465122","name":"2Pac Love","registered_at":"2026-06-23T22:16:38Z","spotify_id":"3eLptVl78r9oGQIIlLLXdB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d77eb67e49cb7ca478407bb03de82d7ed7e2d81ccd01aeccdc734b684589609. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3eLptVl78r9oGQIIlLLXdB.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/3eLptVl78r9oGQIIlLLXdB.