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 0x0dfb614eb8dc7809e7ec8ba80b87c300a17c59ad80a8303bae1d6ee772896ca2. 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/4b3f1c9f-7aa1-448d-9442-1c3291bce2f2.json and https://artists.proofprofile.net/proofs/artist/4b3f1c9f-7aa1-448d-9442-1c3291bce2f2.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 0x79e3e0cd1c831d0045e91bc6f010954eaba89a0d211e36134d749444ccb4f85c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4bumW7qFO00ItmYsCfgute.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/4bumW7qFO00ItmYsCfgute.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd336faaa88a0777ce59f1f4f9a1cda0d32a26d9ab3d3d3e89f298d8e5b510769. 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/3toV44NeCk52CADrEm46o6.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/3toV44NeCk52CADrEm46o6.
{"copyright_id":"0xd336faaa88a0777ce59f1f4f9a1cda0d32a26d9ab3d3d3e89f298d8e5b510769","isrc":"ES76A1800711","name":"Kokoro - Laolu Remix","registered_at":"2026-06-28T20:18:04Z","spotify_id":"5CNbowYP88zfC16t7HyV3g","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd336faaa88a0777ce59f1f4f9a1cda0d32a26d9ab3d3d3e89f298d8e5b510769. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5CNbowYP88zfC16t7HyV3g.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/5CNbowYP88zfC16t7HyV3g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47b2a4bf02ddf4706650a2888e86d6327c04f2de6759a87ab42edc59c83a539. 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/5tAljWXMvPVEnEXq1brzLs.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/5tAljWXMvPVEnEXq1brzLs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882abba78d13faf5356bfc094f3e121362fbf93e83d4f166314a41dd2b6557c1. 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/3dro0MDpsMKIkSTTCVDqhU.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/3dro0MDpsMKIkSTTCVDqhU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3d71c1ceba211f63c2474d082700a2e012406e66eddea642dc4a686fedcb59. 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/4T2HIGbkfogcH7iYRAbILB.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/4T2HIGbkfogcH7iYRAbILB.
{"copyright_id":"0x28b4d386e791a49c0558972c356e4acb6a19a3e337e93bfb7b722f4a8eaa2c21","isrc":"ES76A2300742","name":"Nsera - Solomun Remix Edit","registered_at":"2026-06-06T07:50:52Z","spotify_id":"7IP9QmNlaocwL2NFLfaZQE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b4d386e791a49c0558972c356e4acb6a19a3e337e93bfb7b722f4a8eaa2c21. 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/7IP9QmNlaocwL2NFLfaZQE.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/7IP9QmNlaocwL2NFLfaZQE.
{"copyright_id":"0xb82bfd58b0e59bc6826498e9c59b364e3ec19c0a6a444d4a5113e669f38f4368","isrc":"ES76A2300741","name":"Nsera - Solomun Remix Extended","registered_at":"2026-06-11T23:37:00Z","spotify_id":"0CipmXdDbF0gTMTxxysTeA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82bfd58b0e59bc6826498e9c59b364e3ec19c0a6a444d4a5113e669f38f4368. 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/0CipmXdDbF0gTMTxxysTeA.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/0CipmXdDbF0gTMTxxysTeA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47b2a4bf02ddf4706650a2888e86d6327c04f2de6759a87ab42edc59c83a539. 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/7rVPdiYiCNQILMvZhyIX7l.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/7rVPdiYiCNQILMvZhyIX7l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceedbe26bd02b07834bdbaec73ce506a359afd7159225851c319dc915754200d. 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/2zDHKMCuOzAjZpm3ddJzWA.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/2zDHKMCuOzAjZpm3ddJzWA.
The Harder They Fall (The Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b175c9cb09fff931c4605c9175f29275c918b5e3bb1a9f375d77c248d99d9a. 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/1Rqp7SOEpvw0MmZOhElumw.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/1Rqp7SOEpvw0MmZOhElumw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb767793356531722d8077b9be462c12b4be69fff7f3bd3a16a1b882457c393d4. 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/38134gqU63Kt4lDSph2vKA.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/38134gqU63Kt4lDSph2vKA.
{"copyright_id":"0x19d008aa1a5bae71e782b0eb6f861f55885fa951991a9e87d7bed2c19b448e06","isrc":"GBUM71903770","name":"Douha (Mali Mali)","registered_at":"2026-06-04T09:45:42Z","spotify_id":"6JypyfspQDN6klSSVffY6y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d008aa1a5bae71e782b0eb6f861f55885fa951991a9e87d7bed2c19b448e06. 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/6JypyfspQDN6klSSVffY6y.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/6JypyfspQDN6klSSVffY6y.
{"copyright_id":"0x2ddd28561d6904ae1e702412d27f8409a82c980cdab18272263e89657277ffe6","isrc":"GBUM72004637","name":"Douha (Mali Mali) (Theo Kottis Remix)","registered_at":"2026-06-24T09:39:15Z","spotify_id":"5uBZySNQMCQ8Wak7howAGG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddd28561d6904ae1e702412d27f8409a82c980cdab18272263e89657277ffe6. 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/5uBZySNQMCQ8Wak7howAGG.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/5uBZySNQMCQ8Wak7howAGG.
Douha (Mali Mali) (Joe Goddard Remix / Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c94c53c67e120ff38a61c727170d1a62455b748283f73ccdcafcade1811f64. 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/75Jr9ZI8CTY8mGBIqwxfTV.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/75Jr9ZI8CTY8mGBIqwxfTV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d008aa1a5bae71e782b0eb6f861f55885fa951991a9e87d7bed2c19b448e06. 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/33J9lmeViWXN0Le0vWRyjc.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/33J9lmeViWXN0Le0vWRyjc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c94c53c67e120ff38a61c727170d1a62455b748283f73ccdcafcade1811f64. 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/1supkf9D4Obm2yTHqug3m8.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/1supkf9D4Obm2yTHqug3m8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d008aa1a5bae71e782b0eb6f861f55885fa951991a9e87d7bed2c19b448e06. 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/6PRETxXZ99Idk2Xn5fE0Ok.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/6PRETxXZ99Idk2Xn5fE0Ok.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb767793356531722d8077b9be462c12b4be69fff7f3bd3a16a1b882457c393d4. 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/6MG2wRqClZh0JZ6i8hNMIV.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/6MG2wRqClZh0JZ6i8hNMIV.
{"copyright_id":"0xca88d80f101dab3ada76ec31d18b0175a7806cb9ed153fbedf23f11e4aa54313","isrc":"GBUM71802009","name":"Ultimatum - Edit","registered_at":"2026-06-04T10:14:51Z","spotify_id":"0slkzFvyBWcwnjEEDtYE5E","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca88d80f101dab3ada76ec31d18b0175a7806cb9ed153fbedf23f11e4aa54313. 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/0slkzFvyBWcwnjEEDtYE5E.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/0slkzFvyBWcwnjEEDtYE5E.
Manitoumani - Lamomali X Synapson & Bomel Remix
Manitoumani (Lamomali X Synapson & Bomel Remix)
{"copyright_id":"0x3a0f49473092d16e8dd268e0b53cda6360f6a6589bf66962917d474ef5a94d61","isrc":"FR11Y2400190","name":"Manitoumani - Lamomali X Synapson & Bomel Remix","registered_at":"2026-06-06T23:46:52Z","spotify_id":"2c7ZPkueDw0xMQnReLOxx8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0f49473092d16e8dd268e0b53cda6360f6a6589bf66962917d474ef5a94d61. 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/2c7ZPkueDw0xMQnReLOxx8.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/2c7ZPkueDw0xMQnReLOxx8.
{"copyright_id":"0xca88d80f101dab3ada76ec31d18b0175a7806cb9ed153fbedf23f11e4aa54313","isrc":"GBUM71802009","name":"Ultimatum - Edit","registered_at":"2026-06-04T10:14:51Z","spotify_id":"0p6X10si6mPgSYel3YMSCV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca88d80f101dab3ada76ec31d18b0175a7806cb9ed153fbedf23f11e4aa54313. 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/0p6X10si6mPgSYel3YMSCV.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/0p6X10si6mPgSYel3YMSCV.