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 0x236ac993a55285e7253b8ff9229eed7967bfa23ee38887c9ace02ca5fef3c437. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ddc5ef2-4b7e-43f8-9521-da2e3535d9b3.json and https://artists.proofprofile.net/proofs/artist/1ddc5ef2-4b7e-43f8-9521-da2e3535d9b3.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 0x98dc9ef61dc6403360a7ddd70b1d267275547b6e671e111b1b5965486d842dc4. 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/6hZwGfbZLn5i8VTPhw9nZw.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/6hZwGfbZLn5i8VTPhw9nZw.
Big Dog (with That Mexican OT & 2 Chainz)
{"copyright_id":"0x86b50258dd1940d5a53af25496f5ef43b757b575da3e9fd2aec7132c7ff2e924","isrc":"QZWDD2263669","name":"Subpar (with Method Man)","registered_at":"2026-06-05T16:31:01Z","spotify_id":"4ihDvBziAGDBtxggYujhks","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b50258dd1940d5a53af25496f5ef43b757b575da3e9fd2aec7132c7ff2e924. 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/4ihDvBziAGDBtxggYujhks.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/4ihDvBziAGDBtxggYujhks.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c5851567421c535c9572da79e3d616e7a5eb0b7aaec4e2b292a09d6774403. 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/0rnMrf5pOlIVqOgx2M9q0r.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/0rnMrf5pOlIVqOgx2M9q0r.
{"copyright_id":"0x2b95f0e5f540b3db63c351a9f2689b7fe225b2dfdf69608f1cbfe1519411740b","isrc":"QZWDD2263673","name":"Soupy (with Cozz)","registered_at":"2026-06-04T14:44:47Z","spotify_id":"5TBEzYGA3UAtTxzaQ5A6dB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b95f0e5f540b3db63c351a9f2689b7fe225b2dfdf69608f1cbfe1519411740b. 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/5TBEzYGA3UAtTxzaQ5A6dB.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/5TBEzYGA3UAtTxzaQ5A6dB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c5851567421c535c9572da79e3d616e7a5eb0b7aaec4e2b292a09d6774403. 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/6lWMWfNn9h4j53YIVbCkVW.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/6lWMWfNn9h4j53YIVbCkVW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd467937f7323fb168296d92d4db5bb53d77d1641c1bbf11f687091d293106b4c. 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/4HZAmZEps1rnI8u3PgPLhT.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/4HZAmZEps1rnI8u3PgPLhT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b02bc06f4a64f74f85614c1d3dbaa081f0f8bd0873af29335344c1a225efaaa. 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/3N6ikRnRr3XYlzBv9iRgEN.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/3N6ikRnRr3XYlzBv9iRgEN.
{"copyright_id":"0x99f8c0faad138fca849c8067725924bffaf519dc0726f1b5bd6bfc32759bfb06","isrc":"QZWDD2263648","name":"Snake Skin Leather","registered_at":"2026-06-04T13:09:52Z","spotify_id":"521mlZAo2XcA5lvFgN4tUT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f8c0faad138fca849c8067725924bffaf519dc0726f1b5bd6bfc32759bfb06. 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/521mlZAo2XcA5lvFgN4tUT.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/521mlZAo2XcA5lvFgN4tUT.
{"copyright_id":"0x0c3c5851567421c535c9572da79e3d616e7a5eb0b7aaec4e2b292a09d6774403","isrc":"QZWDD2263652","name":"Pack a Lunch (with Redman)","registered_at":"2026-06-04T08:36:29Z","spotify_id":"3p8PQDGkgwIhp5fyeNypgo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c5851567421c535c9572da79e3d616e7a5eb0b7aaec4e2b292a09d6774403. 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/3p8PQDGkgwIhp5fyeNypgo.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/3p8PQDGkgwIhp5fyeNypgo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc078ca69ae58a218a15c35b0dd4ad6a203d44eb4df779107a4998ee345060948. 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/0KijC5ByPD43qXLkxEmf7o.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/0KijC5ByPD43qXLkxEmf7o.
{"copyright_id":"0x15e7fb7745ca048ffdd599078aeeb96bca8fa829d80973aac37b405f3fafd590","isrc":"USLZJ2222203","name":"Devils Gate (with Kevin Gates)","registered_at":"2026-06-04T05:52:02Z","spotify_id":"334BlFXoVUhroNjxfzATJp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e7fb7745ca048ffdd599078aeeb96bca8fa829d80973aac37b405f3fafd590. 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/334BlFXoVUhroNjxfzATJp.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/334BlFXoVUhroNjxfzATJp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd84e97080d60f77b616392c04a10d30667df2fd50e4e136fe828d9485a12c3a. 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/7MrULyUQq1ga9h1lo4WBGN.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/7MrULyUQq1ga9h1lo4WBGN.
{"copyright_id":"0x86b50258dd1940d5a53af25496f5ef43b757b575da3e9fd2aec7132c7ff2e924","isrc":"QZWDD2263669","name":"Subpar (with Method Man)","registered_at":"2026-06-05T16:31:01Z","spotify_id":"3U6c4yhoy4aJQJJHcXm9yH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b50258dd1940d5a53af25496f5ef43b757b575da3e9fd2aec7132c7ff2e924. 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/3U6c4yhoy4aJQJJHcXm9yH.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/3U6c4yhoy4aJQJJHcXm9yH.
{"copyright_id":"0x2b95f0e5f540b3db63c351a9f2689b7fe225b2dfdf69608f1cbfe1519411740b","isrc":"QZWDD2263673","name":"Soupy (with Cozz)","registered_at":"2026-06-04T14:44:47Z","spotify_id":"1nmZkBjLJr1fK3CiNjkNUS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b95f0e5f540b3db63c351a9f2689b7fe225b2dfdf69608f1cbfe1519411740b. 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/1nmZkBjLJr1fK3CiNjkNUS.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/1nmZkBjLJr1fK3CiNjkNUS.
{"copyright_id":"0x1343df5eb2d54dd87409e1b91e6510c74fa5d32c13fb4a05b8a09087a87ed14b","isrc":"QZWDD2263677","name":"Tough Boy (with Mac Irv)","registered_at":"2026-06-04T16:12:15Z","spotify_id":"3HsjcD5y67EBsIsJfMxuCF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1343df5eb2d54dd87409e1b91e6510c74fa5d32c13fb4a05b8a09087a87ed14b. 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/3HsjcD5y67EBsIsJfMxuCF.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/3HsjcD5y67EBsIsJfMxuCF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d40d9c6de0cc8a46d577364137bfbc80354e27b42a44e5ec13f8957e94e284. 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/0RqRgzkuPlIVBy6fqRfgmg.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/0RqRgzkuPlIVBy6fqRfgmg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5c54aa2049489d182de56f3e3f7edf8d36a60cbd14359c3ef9159061c66f30. 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/2p78D3EENA2obki3tezS7J.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/2p78D3EENA2obki3tezS7J.