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 0xd145b33e7ab9eb35b05b8c4f9caa7cfac4f0d963b93ec8bbb93ad963aa82caef. 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/c1daca88-69ee-4250-b68f-e9214799e656.json and https://artists.proofprofile.net/proofs/artist/c1daca88-69ee-4250-b68f-e9214799e656.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 0x8f627c6a9c842406431e86373ee9ce333c79a186004182bce5506c291ace4c1a. 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/5ZG6sym9wKb6P7n6P4RAni.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/5ZG6sym9wKb6P7n6P4RAni.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79d14f36b3c6b4403331799c03962389bf6d7998a69e6deca3d541ea49a4f5c. 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/6XooB1YmvUwB00yVEykB7t.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/6XooB1YmvUwB00yVEykB7t.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbe57ac1589fc4c87024c71dbf39728d79f0db150748327351df1ac8bc9369b. 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/6p8uRRGziFLcA3QDvWxEPM.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/6p8uRRGziFLcA3QDvWxEPM.
{"copyright_id":"0xa36fcba1452f02ca080a30e9f89710d5b5802c307bc954bc9cdb6da10542b007","isrc":"GBJAJ2101650","name":"How I Feel - Biscits Remix","registered_at":"2026-06-09T05:33:55Z","spotify_id":"475B0rNgiaycpb5tS8fjzP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36fcba1452f02ca080a30e9f89710d5b5802c307bc954bc9cdb6da10542b007. 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/475B0rNgiaycpb5tS8fjzP.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/475B0rNgiaycpb5tS8fjzP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee04292802e0eb572ee2697bd4dc4da4b5c695182fd962af35d9134930ba2dc. 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/2KN5wY5R4gXbka8wB2kXh8.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/2KN5wY5R4gXbka8wB2kXh8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a388443fc5c91d65aa4b358a5d394fb13ba0ccd5030f8e02fe272aa5ff34bd7. 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/04dLlhvDV0WzT456h6y4Ud.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/04dLlhvDV0WzT456h6y4Ud.
{"copyright_id":"0x17d60cf3c6cbf68fb4387a5f767805e40af0f1e6deb222d41e14c223e331aca4","isrc":"NLZ542000904","name":"Only You (feat. Hayley May)","registered_at":"2026-06-09T09:51:23Z","spotify_id":"13shHKTVDw2U2gEu0mFciA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d60cf3c6cbf68fb4387a5f767805e40af0f1e6deb222d41e14c223e331aca4. 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/13shHKTVDw2U2gEu0mFciA.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/13shHKTVDw2U2gEu0mFciA.
{"copyright_id":"0x1ed28a5bac52c60b6d4fbb18102dcfde0a5b42f11f53d380f5656e60389ff32a","isrc":"NLZ542100175","name":"That Feeling (feat. Hayley May)","registered_at":"2026-06-05T09:35:16Z","spotify_id":"7clsGP3ea7rhBaEK9ga898","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed28a5bac52c60b6d4fbb18102dcfde0a5b42f11f53d380f5656e60389ff32a. 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/7clsGP3ea7rhBaEK9ga898.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/7clsGP3ea7rhBaEK9ga898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d488877a38f296572d6d3c5359c234609d528a345a285c8cfba4c8c169326b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:55:01Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3jz05erDbdpiZxcVhWtCux.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/3jz05erDbdpiZxcVhWtCux.
{"copyright_id":"0x31836742ba88eef40b4d5b7daf3bedd3f417c3d1ab53859f11874caf0f5037c7","isrc":"USZ4V2100260","name":"Over This - Ferreck Dawn Remix","registered_at":"2026-06-22T21:53:12Z","spotify_id":"1AV8pigteWcJfYAxKPjnJ5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31836742ba88eef40b4d5b7daf3bedd3f417c3d1ab53859f11874caf0f5037c7. 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/1AV8pigteWcJfYAxKPjnJ5.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/1AV8pigteWcJfYAxKPjnJ5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d488877a38f296572d6d3c5359c234609d528a345a285c8cfba4c8c169326b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7LsdW0TJaypWRJhrzeq0yp.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/7LsdW0TJaypWRJhrzeq0yp.
Never Let Me Down - t e s t p r e s s Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2488da49103d6c6a45d1dc63fe3fdd562d9c8a1031984185167012e21804ca. 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/5c896n7Y7egXYYPR09TFvV.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/5c896n7Y7egXYYPR09TFvV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da9b1fe3b570b624407962089827315ca8a8ab3c47d76a57f4868f494e18c38. 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/3PBxGPKTvxXvcP1Z7dDc3Q.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/3PBxGPKTvxXvcP1Z7dDc3Q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024fe2730b480ae44521490823793fb68ea1c0894f09a3fe5f4b1633fb05024. 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/61pU43qALB2CobNE0xA6ar.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/61pU43qALB2CobNE0xA6ar.
Never Let Me Down (t e s t p r e s s Remix)
{"copyright_id":"0x2c2488da49103d6c6a45d1dc63fe3fdd562d9c8a1031984185167012e21804ca","isrc":"GBUM72104119","name":"Never Let Me Down - t e s t p r e s s Remix","registered_at":"2026-06-18T13:26:58Z","spotify_id":"3jPVmtvUAbLrfSKqPZz6LW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2488da49103d6c6a45d1dc63fe3fdd562d9c8a1031984185167012e21804ca. 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/3jPVmtvUAbLrfSKqPZz6LW.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/3jPVmtvUAbLrfSKqPZz6LW.