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 0xab671481dec99faa3ecedfe50cd5ed0acbf1d6807ea866b39eb75dffea77df87. 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/32747c82-a0e2-449d-ba7f-8647eb56d8bc.json and https://artists.proofprofile.net/proofs/artist/32747c82-a0e2-449d-ba7f-8647eb56d8bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xcacff494b2831bf2d75d8a9de573aece8653f88bedaa42f96aae5eb88e4d42da","isrc":"USCGH1974868","name":"Morei Sky","registered_at":"2026-06-28T19:49:51Z","spotify_id":"09U37wC5KvI9Uk8hedGfvP","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 0xcacff494b2831bf2d75d8a9de573aece8653f88bedaa42f96aae5eb88e4d42da. 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/09U37wC5KvI9Uk8hedGfvP.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/09U37wC5KvI9Uk8hedGfvP.
{"copyright_id":"0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f","isrc":"USC4R1903010","name":"What's In The Eye","registered_at":"2026-06-05T14:19:31Z","spotify_id":"0lL3yuCIAwjqYxuT9vuRm3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f. 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/0lL3yuCIAwjqYxuT9vuRm3.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/0lL3yuCIAwjqYxuT9vuRm3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fad0015a1456c2fc28aae0a77e68c9bc8abc206b02da2e018795382833cb52c. 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/1Jw3Fz8fuDnBc2nD7HTn8p.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/1Jw3Fz8fuDnBc2nD7HTn8p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0f559975369d2af63d00ff5dcaa0837db63b18e21e79ef5423878e5ccdd2dc. 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/042PXsZRoa3RJ98rrxQPBd.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/042PXsZRoa3RJ98rrxQPBd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fad0015a1456c2fc28aae0a77e68c9bc8abc206b02da2e018795382833cb52c. 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/6XwVMLZtL5ypwSjnoITcty.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/6XwVMLZtL5ypwSjnoITcty.
{"copyright_id":"0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f","isrc":"USC4R1903010","name":"What's In The Eye","registered_at":"2026-06-05T14:19:31Z","spotify_id":"1YXace0v3hXsHAmBOoaRaa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f. 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/1YXace0v3hXsHAmBOoaRaa.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/1YXace0v3hXsHAmBOoaRaa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f4c3a12fee0ac87ae005546114204ef61ebf1fa11785d98a18566e89c53ca6. 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/0i3cKHN60khDEY6ApH2oDu.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/0i3cKHN60khDEY6ApH2oDu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fad0015a1456c2fc28aae0a77e68c9bc8abc206b02da2e018795382833cb52c. 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/7q4VM9nBoRPRZ7HnSm3Rue.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/7q4VM9nBoRPRZ7HnSm3Rue.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0f559975369d2af63d00ff5dcaa0837db63b18e21e79ef5423878e5ccdd2dc. 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/0jI3jsxyPNH6yJ6EMujpN0.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/0jI3jsxyPNH6yJ6EMujpN0.
{"copyright_id":"0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f","isrc":"USC4R1903010","name":"What's In The Eye","registered_at":"2026-06-05T14:19:31Z","spotify_id":"2dfjhNLJFKfYtbhz8lJeiK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f. 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/2dfjhNLJFKfYtbhz8lJeiK.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/2dfjhNLJFKfYtbhz8lJeiK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ac23791e841129cae339c93f3c313fe6b7dc3d32d21fe382633c645a4c8197. 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/53730AqeOR3UrkThUTCFtT.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/53730AqeOR3UrkThUTCFtT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f4c3a12fee0ac87ae005546114204ef61ebf1fa11785d98a18566e89c53ca6. 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/1BnBDw8zFlVQ5KoftwEEG0.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/1BnBDw8zFlVQ5KoftwEEG0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fad0015a1456c2fc28aae0a77e68c9bc8abc206b02da2e018795382833cb52c. 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/4UNZG2NaIksgHyrgNSoxiz.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/4UNZG2NaIksgHyrgNSoxiz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0f559975369d2af63d00ff5dcaa0837db63b18e21e79ef5423878e5ccdd2dc. 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/74fN15YESMLVzIrevXEWhq.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/74fN15YESMLVzIrevXEWhq.
{"copyright_id":"0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f","isrc":"USC4R1903010","name":"What's In The Eye","registered_at":"2026-06-05T14:19:31Z","spotify_id":"7iOU2TsL4bRJpGHcDfCNvf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f. 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/7iOU2TsL4bRJpGHcDfCNvf.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/7iOU2TsL4bRJpGHcDfCNvf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fad0015a1456c2fc28aae0a77e68c9bc8abc206b02da2e018795382833cb52c. 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/7IWU82hXEn37Uu5Xm3oYlA.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/7IWU82hXEn37Uu5Xm3oYlA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0f559975369d2af63d00ff5dcaa0837db63b18e21e79ef5423878e5ccdd2dc. 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/778mCz3rZsGeTSXn4LIuQA.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/778mCz3rZsGeTSXn4LIuQA.
{"copyright_id":"0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f","isrc":"USC4R1903010","name":"What's In The Eye","registered_at":"2026-06-05T14:19:31Z","spotify_id":"5TafDLBGKLHus4xn9UBQzZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6952f8a2140e8470b732f1aab7eadd3a17cedd4504b9468f7aa944ae0bb79f. 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/5TafDLBGKLHus4xn9UBQzZ.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/5TafDLBGKLHus4xn9UBQzZ.
{"copyright_id":"0x06d79e33264bcf68ac57911badeea21ad7f9973584dc5a5320d3b985a48d2954","isrc":"USC4R1903013","name":"The Syndrome","registered_at":"2026-06-04T16:29:47Z","spotify_id":"5GkkCOIbbolsC3MZLAsqZK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d79e33264bcf68ac57911badeea21ad7f9973584dc5a5320d3b985a48d2954. 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/5GkkCOIbbolsC3MZLAsqZK.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/5GkkCOIbbolsC3MZLAsqZK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd621405a9966486974bbf1506014dc54a1329486584e39deda180179f1f90ae3. 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/3VT6TJkD2V1Cwz60564IiZ.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/3VT6TJkD2V1Cwz60564IiZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd94c90396548826c07f153836cffd2a1213adcbf9979f995df4398eee315af. 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/1rIu27SZe2OKH7GCuByASY.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/1rIu27SZe2OKH7GCuByASY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ac23791e841129cae339c93f3c313fe6b7dc3d32d21fe382633c645a4c8197. 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/2NVrALq8HUj3Y0NKC4AjGw.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/2NVrALq8HUj3Y0NKC4AjGw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f4c3a12fee0ac87ae005546114204ef61ebf1fa11785d98a18566e89c53ca6. 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/2Wv6Mv7PWtv1wst5oYqqQc.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/2Wv6Mv7PWtv1wst5oYqqQc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64143740d286b46f12459a3bb7de8518db4f708245ae5a8a652ae63f376e813. 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/4SY2bExLOiIH9DIPkN07NM.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/4SY2bExLOiIH9DIPkN07NM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b962f734af3a9246d5371e658f7699cd0b20eef9b5d6c38885cc4597157dd7f. 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/1dA3JcY5dC7sKSEWd3wsV3.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/1dA3JcY5dC7sKSEWd3wsV3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe923b3139e67aef71687f8470b62022f6f2d27486b283a07dab67bab12b431fe. 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/5G5O4mCt1DNWxEEkigElL3.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/5G5O4mCt1DNWxEEkigElL3.
Anything, Anything - Dark Nights: Death Metal
{"copyright_id":"0x39c774ec528953f80ebfa6a1767a01a5baf1060fef49760feadf51a05c6567ee","isrc":"USC4R2105584","name":"Anything, Anything - Dark Nights: Death Metal","registered_at":"2026-06-20T21:44:32Z","spotify_id":"0PebVRXasVc8GQSaeVKiOB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c774ec528953f80ebfa6a1767a01a5baf1060fef49760feadf51a05c6567ee. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0PebVRXasVc8GQSaeVKiOB.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/0PebVRXasVc8GQSaeVKiOB.
Hole [Feat. Lily Bennington, Lila Bennington]
{"copyright_id":"0x39c774ec528953f80ebfa6a1767a01a5baf1060fef49760feadf51a05c6567ee","isrc":"USC4R2105584","name":"Anything, Anything - Dark Nights: Death Metal","registered_at":"2026-06-20T21:44:32Z","spotify_id":"6y8eepqOL93tmCzT5Bd58A","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c774ec528953f80ebfa6a1767a01a5baf1060fef49760feadf51a05c6567ee. 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/6y8eepqOL93tmCzT5Bd58A.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/6y8eepqOL93tmCzT5Bd58A.