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 0x3181b0180fd76b57d1d23662f6a02ffe126ec8969cf41a965e8318b96a6e35b7. 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/054841f8-7027-432b-b754-f4536a37c545.json and https://artists.proofprofile.net/proofs/artist/054841f8-7027-432b-b754-f4536a37c545.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 0x49089e7fb249f2c8a154c4538f51fa42c5ee3e1a036a9cf2f59d62d48279ac40. 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/3bC1vaJFYuf7y9tln5EMWB.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/3bC1vaJFYuf7y9tln5EMWB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af6f6cde79e979c5dd7ad2d1e4c6845cf1859ee3294a0a16ef8807834b4f466. 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/29WxJqIfDRMo9isV07kbJP.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/29WxJqIfDRMo9isV07kbJP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefadc544b592e83a4fbe8405fab61c1717939cd7bdb85a6288e488a23c498859. 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/53e1ziBCUUJCohrOzZMXzp.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/53e1ziBCUUJCohrOzZMXzp.
{"copyright_id":"0xf5e10a5de6feaa3818b055866aa527802fbf4c5f9dff128c6625760dabeccad3","isrc":"QZ9451903754","name":"The Same (feat. Tobi Lou)","registered_at":"2026-06-07T06:42:39Z","spotify_id":"2XkdCFYCCEJqr42LRUkvaE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e10a5de6feaa3818b055866aa527802fbf4c5f9dff128c6625760dabeccad3. 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/2XkdCFYCCEJqr42LRUkvaE.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/2XkdCFYCCEJqr42LRUkvaE.
{"copyright_id":"0x72afeb39e2b46c52f596b7e08233b0752fac789a99eaa93568df2c9e741f6948","isrc":"QMFME2047454","name":"Areyoudown? Pt. 2","registered_at":"2026-06-07T19:07:46Z","spotify_id":"3cVORyVyOBOPqHXgHgV1WJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72afeb39e2b46c52f596b7e08233b0752fac789a99eaa93568df2c9e741f6948. 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/3cVORyVyOBOPqHXgHgV1WJ.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/3cVORyVyOBOPqHXgHgV1WJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30febb75bdc78c2a76a79ec030516b586b66743c25edd35fb77b877dd7ff4c61. 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/2RsV1r3MN9F11iDllRmJEs.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/2RsV1r3MN9F11iDllRmJEs.
{"copyright_id":"0xc75a074942f7530ff20ec58cd54e42d6ddf8bc618cc169f13b3e0cae91703c33","isrc":"TCACZ1768904","name":"Not the Only One","registered_at":"2026-06-07T19:10:21Z","spotify_id":"3q5wn2zu1Bt5NOxmwfGtCn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a074942f7530ff20ec58cd54e42d6ddf8bc618cc169f13b3e0cae91703c33. 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/3q5wn2zu1Bt5NOxmwfGtCn.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/3q5wn2zu1Bt5NOxmwfGtCn.
{"copyright_id":"0xc75a074942f7530ff20ec58cd54e42d6ddf8bc618cc169f13b3e0cae91703c33","isrc":"TCACZ1768904","name":"Not the Only One (feat. Tobi Lou)","registered_at":"2026-06-07T19:10:21Z","spotify_id":"1Pq3Y2IbW0tJgO9EU3JUAE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a074942f7530ff20ec58cd54e42d6ddf8bc618cc169f13b3e0cae91703c33. 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/1Pq3Y2IbW0tJgO9EU3JUAE.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/1Pq3Y2IbW0tJgO9EU3JUAE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cc96c564dd1c8878586c207d565f148f99a34a7a8a042677014a6d62065b1b. 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/4N72cTNBl7NO08CSPLoCoA.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/4N72cTNBl7NO08CSPLoCoA.
{"copyright_id":"0x725a5f5b4079c66a26068d7dcc0d5b8a5faacce3e15ac0a6a849225f4022b45b","isrc":"ZZOPM2237556","name":"IN MY BAG (with tobi lou)","registered_at":"2026-06-05T08:10:48Z","spotify_id":"19UN3jhbwy4a5x3x5UC8WX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725a5f5b4079c66a26068d7dcc0d5b8a5faacce3e15ac0a6a849225f4022b45b. 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/19UN3jhbwy4a5x3x5UC8WX.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/19UN3jhbwy4a5x3x5UC8WX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7548caffab3b328dc7320b992e2616bb935e5515e32b65328d9cf4009f482cea. 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/62HxRvtceWrQ1HUEey0e7s.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/62HxRvtceWrQ1HUEey0e7s.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5e1dc39b54cf94e341eace7ad3eca45d65490fb7944b3e01a98c740984080c. 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/1DPIqXc2BfJWWgCy0Tc2lr.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/1DPIqXc2BfJWWgCy0Tc2lr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c68d5f8cc96420fd5f1e8c69a1c153e283b4cc2cac5458e7a7743ac7a74fe2. 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/1zEbNKskIXJrLnuw5riAYO.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/1zEbNKskIXJrLnuw5riAYO.
{"copyright_id":"0x1020d85bea6dfa2e274562909390820ddfb151604f51d8d057e9656beee7672b","isrc":"USUYG1258687","name":"I Was Sad Last Night I'm OK Now","registered_at":"2026-06-04T07:20:55Z","spotify_id":"0gEcmyKlIUoi3sHTFVO1bE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1020d85bea6dfa2e274562909390820ddfb151604f51d8d057e9656beee7672b. 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/0gEcmyKlIUoi3sHTFVO1bE.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/0gEcmyKlIUoi3sHTFVO1bE.
{"copyright_id":"0x584304fabd4dc9559136ff3a6d3a29d1cf5d92a208c9585f93de5eb6fad39e36","isrc":"USUYG1258688","name":"Sometimes I Ignore You Too","registered_at":"2026-06-06T22:24:44Z","spotify_id":"6lALD7Cd2YD75wiakbmGdd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584304fabd4dc9559136ff3a6d3a29d1cf5d92a208c9585f93de5eb6fad39e36. 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/6lALD7Cd2YD75wiakbmGdd.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/6lALD7Cd2YD75wiakbmGdd.
That Old Nu-Nu (feat. Erica René & Cam O'bi)
{"copyright_id":"0xd4b165adc27d774113e5c0292917914ed3515e10f8b3d6721018d684ef135077","isrc":"USUYG1258689","name":"That Old Nu-Nu (feat. Erica René & Cam O'bi)","registered_at":"2026-06-06T01:40:20Z","spotify_id":"0HwuEkVigzb7sFtMtU3mVu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b165adc27d774113e5c0292917914ed3515e10f8b3d6721018d684ef135077. 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/0HwuEkVigzb7sFtMtU3mVu.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/0HwuEkVigzb7sFtMtU3mVu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7806063805f255d65239901ec38a1c928c17cd629f4b2255d9796abd749ec38. 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/2i2sTxqocNWq9BlwtfInbe.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/2i2sTxqocNWq9BlwtfInbe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ce439299f49feedddf769365b7ddc7cfa2f201b6759da199a38df2f035b88c. 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/1gaIDxLXT9GQ7tMTwPVfJj.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/1gaIDxLXT9GQ7tMTwPVfJj.
{"copyright_id":"0x146bd2cd3762364323f6fa8ee8f903b617f85d9c5f392d4fc4bdc9143415b244","isrc":"USUYG1258692","name":"Deserve It (feat. Rockie Fresh)","registered_at":"2026-06-08T10:42:16Z","spotify_id":"0Cxp5DlHwIuyP87BwveQFv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146bd2cd3762364323f6fa8ee8f903b617f85d9c5f392d4fc4bdc9143415b244. 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/0Cxp5DlHwIuyP87BwveQFv.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/0Cxp5DlHwIuyP87BwveQFv.
{"copyright_id":"0x977d265cdb3339b4d90c75bf1b9666ce7ee1ac5ee7d356013cc8d6f63f4a0678","isrc":"USUYG1258694","name":"Smiling at My Phone","registered_at":"2026-06-08T17:34:45Z","spotify_id":"3T8oLeubv2XQ7on3YIsFEz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977d265cdb3339b4d90c75bf1b9666ce7ee1ac5ee7d356013cc8d6f63f4a0678. 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/3T8oLeubv2XQ7on3YIsFEz.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/3T8oLeubv2XQ7on3YIsFEz.