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 0xc5e359228d5b0bdb0fc6ee56451d7b8a69aefd254ecc83de170aa9bd9578d765. 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/8c763316-695d-467c-952d-756ae76387ce.json and https://artists.proofprofile.net/proofs/artist/8c763316-695d-467c-952d-756ae76387ce.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 0x2a682ebbad3cb633396db4552639249d4010954b49591984eef42a56755ed763. 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/5GYZRobmOp1RcwXPGPk5YI.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/5GYZRobmOp1RcwXPGPk5YI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f655925fafa99b2002f420875076f3e0a7f50d0bc7bf7f17cb0b6ee2231be7. 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/3KDfNMnJo76JuuhgqiomOu.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/3KDfNMnJo76JuuhgqiomOu.
{"copyright_id":"0xd3e58f70f4269580d9ec424a133638a7feed534c88319db5a603f508da6ca778","isrc":"FR9W12100280","name":"Love's Like a Western Song - Club Mix","registered_at":"2026-06-07T01:39:54Z","spotify_id":"7sZYgkIJhFcLruqdWxAAQp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e58f70f4269580d9ec424a133638a7feed534c88319db5a603f508da6ca778. 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/7sZYgkIJhFcLruqdWxAAQp.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/7sZYgkIJhFcLruqdWxAAQp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953e6a62a3931dfef995fba6c016c5138170d6784577fcd8a23a239c87a75426. 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/5ew9A0Ws6zke6fGKsHGosY.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/5ew9A0Ws6zke6fGKsHGosY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953e6a62a3931dfef995fba6c016c5138170d6784577fcd8a23a239c87a75426. 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/3nuLvL77HCjhWehm2DWHIk.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/3nuLvL77HCjhWehm2DWHIk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953e6a62a3931dfef995fba6c016c5138170d6784577fcd8a23a239c87a75426. 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/1wld4FtmlCG42d0kYF3EsJ.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/1wld4FtmlCG42d0kYF3EsJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b142913d99f94f5ca6c0c195b472c928842a706f44ef6789483605e2a81afb. 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/1srQid5z8aS7haTqtA2Nzs.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/1srQid5z8aS7haTqtA2Nzs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad5da486ec75919bb8735267443ed1ccc15908a3926e10ae441e87a9316455d. 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/3Yl8u6d9aWhplYbFJi5F7t.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/3Yl8u6d9aWhplYbFJi5F7t.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3d1288892022b0bdfb7349e6ee9724badd232aca348c247e8f9407d0e0555a. 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/0iZIKmWTVxfduWPdK5uquX.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/0iZIKmWTVxfduWPdK5uquX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe925787fe89b518c21954c7cb60de4364be5d73f6e0dd54e66d8c16610422595. 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/5OYuvEBMJmxilLmoYi6M12.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/5OYuvEBMJmxilLmoYi6M12.
{"copyright_id":"0xd3e58f70f4269580d9ec424a133638a7feed534c88319db5a603f508da6ca778","isrc":"FR9W12100280","name":"Love's Like a Western Song - Club Mix","registered_at":"2026-06-07T01:39:54Z","spotify_id":"6NGTzUaoI5xku1vMJgjh21","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e58f70f4269580d9ec424a133638a7feed534c88319db5a603f508da6ca778. 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/6NGTzUaoI5xku1vMJgjh21.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/6NGTzUaoI5xku1vMJgjh21.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f655925fafa99b2002f420875076f3e0a7f50d0bc7bf7f17cb0b6ee2231be7. 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/4tkkpHOPfutkomCmqeo6un.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/4tkkpHOPfutkomCmqeo6un.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734ddeb55818ea3be8c0217489d669e23f2db85ed72959e334ad8e2386467837. 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/7ChxRiYzHUWzKMMNwOb8W1.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/7ChxRiYzHUWzKMMNwOb8W1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11799fdb45efb1034fdb6942b1392f99512534a604423cbbe72147dbff04e8e. 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/53dXgeR54lwFeMJGruuIf3.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/53dXgeR54lwFeMJGruuIf3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44aed06f08459c27a0629ccca4cb3618e114664bbd3082d6b5bdfc204e61822. 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/3wkXKEqfclLDYkMW7h2gqn.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/3wkXKEqfclLDYkMW7h2gqn.
Hanabi (feat. Kaikun & Hinako Miura) [Remix]