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 0xf2a18e8a05e3554822af5e652bd880965d6afba5a4aa2e9af5c6b98ea8dc8729. 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/3ee96a56-7995-4e90-bfb3-cff9cedf595a.json and https://artists.proofprofile.net/proofs/artist/3ee96a56-7995-4e90-bfb3-cff9cedf595a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x99c943fbbb0f4fe9796da51b234a8ba9c9bfcae3c1ffb0d540e723f596335249","isrc":"NZPB12300972","name":"Thank You Lord","registered_at":"2026-06-07T10:07:34Z","spotify_id":"0A2pzXziWkCfjmv0jCbwD2","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 0x99c943fbbb0f4fe9796da51b234a8ba9c9bfcae3c1ffb0d540e723f596335249. 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/0A2pzXziWkCfjmv0jCbwD2.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/0A2pzXziWkCfjmv0jCbwD2.
{"copyright_id":"0x6b024dca890d335f3803d2bf3d961f9c468cefb17721cde1eba8f2dca2e01c3f","isrc":"USHM82297462","name":"Island Queen","registered_at":"2026-06-06T20:19:28Z","spotify_id":"74ylvRImIZBafqKpxmObKc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b024dca890d335f3803d2bf3d961f9c468cefb17721cde1eba8f2dca2e01c3f. 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/74ylvRImIZBafqKpxmObKc.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/74ylvRImIZBafqKpxmObKc.
{"copyright_id":"0x3bef47eec267258015401da35c11bde9a1828ce46d0e677a1ceab1e92638e7a5","isrc":"USHM92110836","name":"Jah Loves You (with High Watah Music)","registered_at":"2026-06-07T22:52:53Z","spotify_id":"0Bn3q3nwlh85LB8nMHxjRu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bef47eec267258015401da35c11bde9a1828ce46d0e677a1ceab1e92638e7a5. 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/0Bn3q3nwlh85LB8nMHxjRu.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/0Bn3q3nwlh85LB8nMHxjRu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2626e68759cc0743b80790779779d655f2a40e5a42379482047f67c16a01813d. 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/6NYeNKzwLRNXMH5xY7PXEV.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/6NYeNKzwLRNXMH5xY7PXEV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7a70a9631c62f1d09c478f427ba156feac29393ddeccd28417087103875faf. 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/3YgD6dE7RpoTT6U9tg0YuH.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/3YgD6dE7RpoTT6U9tg0YuH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ca9a9aa29c016da4b4f4efa790a5be2b13e12532e377cca7d398bbe8b9c2eb. 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/2AxB4uhXvU07isPamm3bVv.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/2AxB4uhXvU07isPamm3bVv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d92b272e440e4a0a213435f9097c25acf38c3c82428fae01be3e30d77e8948. 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/54Jc6WhSu4SNb54kgu64MJ.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/54Jc6WhSu4SNb54kgu64MJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233d02cdb39250ffcfe6af666496566d9cd012a73ab20d8ad06845cd80e4d0a7. 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/1MIlXyCcvUEfaliY7odt21.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/1MIlXyCcvUEfaliY7odt21.
{"copyright_id":"0x04c86180ec5ada6038093e460ebad602ae0e472736b30f13eee0b27819bbaad8","isrc":"USCGJ2164694","name":"Smile On","registered_at":"2026-06-09T22:09:26Z","spotify_id":"2CDpifWzwIUu8ARpHGrxc2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c86180ec5ada6038093e460ebad602ae0e472736b30f13eee0b27819bbaad8. 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/2CDpifWzwIUu8ARpHGrxc2.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/2CDpifWzwIUu8ARpHGrxc2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0181c80fd5ea7e87f4af9d316eec3369148d38592acf49321a12586f66b1026. 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/2hQhkfLI4LiWm7lgNhDPnb.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/2hQhkfLI4LiWm7lgNhDPnb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5582599478e29e3273cd912070afbc2d978ca524386eb98a5d02ea09eeaf5. 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/3IN3xjokxW3DgzRmQt05c0.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/3IN3xjokxW3DgzRmQt05c0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0542f0dc7c0cd5d782c3d1b4f0682d253d6746649929588e9cca78853647e618. 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/2nqY2oCpSmvyx4bS2CthtC.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/2nqY2oCpSmvyx4bS2CthtC.
{"copyright_id":"0xfaa35605959c333598ee47ed565d6e3dd833eeacf892801bda5ef3f47ce94bcf","isrc":"USDY42027573","name":"Thinking of You","registered_at":"2026-06-09T12:10:25Z","spotify_id":"1IvscBnBe03ZYCYRUdguCh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa35605959c333598ee47ed565d6e3dd833eeacf892801bda5ef3f47ce94bcf. 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/1IvscBnBe03ZYCYRUdguCh.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/1IvscBnBe03ZYCYRUdguCh.
{"copyright_id":"0x61ec4011c7ba2aad7b1b1bbc79172a0ac015562b6558bbc2ba7bebc9759d0427","isrc":"USCGH2018805","name":"Moloka'i Boy","registered_at":"2026-06-07T23:08:47Z","spotify_id":"0Pf2eCZICflHH3JdqrCJcT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ec4011c7ba2aad7b1b1bbc79172a0ac015562b6558bbc2ba7bebc9759d0427. 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/0Pf2eCZICflHH3JdqrCJcT.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/0Pf2eCZICflHH3JdqrCJcT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201b5e9951fb55939ecbc7189eb88b2d5ebfcb211641352c914e14d5687bb487. 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/3zy6P4WjWqMTB18ciycDYV.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/3zy6P4WjWqMTB18ciycDYV.
{"copyright_id":"0x61ec4011c7ba2aad7b1b1bbc79172a0ac015562b6558bbc2ba7bebc9759d0427","isrc":"USCGH2018805","name":"Moloka'i Boy","registered_at":"2026-06-07T23:08:47Z","spotify_id":"7snPwovkdQWCcEAFTmOSle","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ec4011c7ba2aad7b1b1bbc79172a0ac015562b6558bbc2ba7bebc9759d0427. 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/7snPwovkdQWCcEAFTmOSle.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/7snPwovkdQWCcEAFTmOSle.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201b5e9951fb55939ecbc7189eb88b2d5ebfcb211641352c914e14d5687bb487. 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/55QVdNElV2NmeTUapUD54k.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/55QVdNElV2NmeTUapUD54k.