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 0x44feac74ab24830777198157f4442ec8c7fdf52cbe8730a371dbc0ab642e600d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01131536-399a-4efc-8955-096e5a3cc4e2.json and https://artists.proofprofile.net/proofs/artist/01131536-399a-4efc-8955-096e5a3cc4e2.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 0x958a024e5f5ed35255b69f5c93d304750cf653da6ae1533fad34e88c8225e720. 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/0XB3UigycQE75lWN6noCLm.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/0XB3UigycQE75lWN6noCLm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1236fb745c8f95a0f9efc1b347a83f498e60739e59a24e4f9c2ac6601d435a. 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/4PpPUNBtlM8838tIgN2bRJ.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/4PpPUNBtlM8838tIgN2bRJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6633af824df43ac49b11f0c6bc906199b6fff7d09476400c53b8667a405c59c6. 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/54ZhIuuJDXLkjsiFvJhPx4.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/54ZhIuuJDXLkjsiFvJhPx4.
{"copyright_id":"0xb54d6ddedd4c16351ee6783f748a4d3d685287ea7b7f775efd71c4a11db09e22","isrc":"BEIW12100338","name":"My Favorite Song","registered_at":"2026-06-24T19:47:24Z","spotify_id":"4cUPDmRW8JKK33NsAKuAJt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54d6ddedd4c16351ee6783f748a4d3d685287ea7b7f775efd71c4a11db09e22. 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/4cUPDmRW8JKK33NsAKuAJt.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/4cUPDmRW8JKK33NsAKuAJt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafe5c586d8a371bd3e80d22d255c855a6080928106b33e38e6f47fc17542273. 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/1kZXLqo1njmQRHnRSX9a7z.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/1kZXLqo1njmQRHnRSX9a7z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a1d1f38a349a421663bb23a5d62b97ce69d1335a143fae755bf910d15742ee. 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/3S4kFKz1Olm9SdFGTe0t4J.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/3S4kFKz1Olm9SdFGTe0t4J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685b41f1a6aa210228c2152851200be9ff984daf0f21fe6bda9a5eefb9c9f870. 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/5u8nQ6VxzQAR8riy0dxQnl.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/5u8nQ6VxzQAR8riy0dxQnl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a247429a80bd5d231018a2d2fef816c7ee7db3bb37d853482ea9abd95aff5c8. 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/6xrxpG36nKZILpWdKFWn5q.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/6xrxpG36nKZILpWdKFWn5q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a241a2a5bb85d868c5c81649912f47ce5c45ad7f12e5b610643564c4716a2. 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/6GgZomBgaEpvCVX2aGf9ci.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/6GgZomBgaEpvCVX2aGf9ci.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc4222341c77f872d0d8d6082395e13d68472966044bbca431619a0332ac21c. 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/6KSjAYVoYsWSkPXV9UWMjs.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/6KSjAYVoYsWSkPXV9UWMjs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593fb974412344240f8074a857b92f52152798027a86a10b1039c115d8902353. 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/63Jnc7Mth0ucvJRjUCfDYA.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/63Jnc7Mth0ucvJRjUCfDYA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880ee23848902d431d75848885755a489097951dbbf4616fc3d011dba52ccb43. 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/29tbzpV5q66mTQejgg3V5i.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/29tbzpV5q66mTQejgg3V5i.
{"copyright_id":"0xf6681052fa44ff19cfba0f55ad76e918e9c28abda4b4302cc979494dca7a43cb","isrc":"BXIED2300315","name":"Boca de Pêlo - Remix","registered_at":"2026-06-18T16:19:34Z","spotify_id":"2ZJcNQFL7TFVaMryXgApd1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6681052fa44ff19cfba0f55ad76e918e9c28abda4b4302cc979494dca7a43cb. 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/2ZJcNQFL7TFVaMryXgApd1.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/2ZJcNQFL7TFVaMryXgApd1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b202a1f1ce10142eec1b19686db1bbed60b0da0908e0c0867f7f8972f46b5f. 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/0sL7klqtKTaMVVC3CCXwRv.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/0sL7klqtKTaMVVC3CCXwRv.
{"copyright_id":"0xf3f453c603f76e5243d0cdd072a7ae839d35bedefa636ebb75a7013a9b60a7cf","isrc":"NLM5S2000855","name":"Terremoto - Extended Mix","registered_at":"2026-06-19T13:35:14Z","spotify_id":"4eYpSjgP4Fkc8n2J7TEK05","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f453c603f76e5243d0cdd072a7ae839d35bedefa636ebb75a7013a9b60a7cf. 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/4eYpSjgP4Fkc8n2J7TEK05.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/4eYpSjgP4Fkc8n2J7TEK05.