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 0x2b40879ee86c9bac1214e67801f26e9b0bdecd9aba80cef42323b192d324cff0. 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/b3526727-1741-4653-8853-6f2b68139590.json and https://artists.proofprofile.net/proofs/artist/b3526727-1741-4653-8853-6f2b68139590.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x05b01bcf3f15d65f58223434df3d4d7cd5eca1b117694ae68b656b4dbb835b46","isrc":"TCACS1677077","name":"In the River (Acoustic)","registered_at":"2026-06-29T13:33:20Z","spotify_id":"0AJyY4o0LUYknZdOTrbcYu","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 0x05b01bcf3f15d65f58223434df3d4d7cd5eca1b117694ae68b656b4dbb835b46. 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/0AJyY4o0LUYknZdOTrbcYu.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/0AJyY4o0LUYknZdOTrbcYu.
He Calls Me River (feat. Oshima Brothers)
Who Says That's Not American (Radio Edit)
Who Says That's Not American - Radio Edit
{"copyright_id":"0x796ed8ebb09d61b8558ccf0b15fb01871b93edd79b9f67e284aeeafd27c2651e","isrc":"QZQAY2369767","name":"PSYCHO KILLER","registered_at":"2026-06-24T15:36:05Z","spotify_id":"3Bhw4B6EFw12gjKvmsJyMo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796ed8ebb09d61b8558ccf0b15fb01871b93edd79b9f67e284aeeafd27c2651e. 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/3Bhw4B6EFw12gjKvmsJyMo.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/3Bhw4B6EFw12gjKvmsJyMo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f5e7baf23a43930a81c338e4f1d649ff8b3d41a5a120eb1b14532140203a24. 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/3MH2mgnpGx3xs12bwUVZMP.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/3MH2mgnpGx3xs12bwUVZMP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4473e17e071556652e0cd484207bb809899f6b731e339dee37607fc6263ca4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/14IEjX2H3G5TipGxFZo7Yo.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/14IEjX2H3G5TipGxFZo7Yo.
{"copyright_id":"0xa5f5e7baf23a43930a81c338e4f1d649ff8b3d41a5a120eb1b14532140203a24","isrc":"USLZJ2299976","name":"Place To Call Home","registered_at":"2026-06-18T00:31:41Z","spotify_id":"3WWGQmfZnzjzXwJIy90SR6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f5e7baf23a43930a81c338e4f1d649ff8b3d41a5a120eb1b14532140203a24. 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/3WWGQmfZnzjzXwJIy90SR6.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/3WWGQmfZnzjzXwJIy90SR6.