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 0x31a4d8cc1511132b074bfc56d32dccd237c34b1e1f74621e45247d0eacdbdc10. 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/5c08f535-e332-4bc2-846e-f47f5dd33269.json and https://artists.proofprofile.net/proofs/artist/5c08f535-e332-4bc2-846e-f47f5dd33269.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Refrigerators and Generators for Background Sounds and White Noises
{"copyright_id":"0x78f3d85ecee9a5ed425141d3362d0f6c3fa78a50e0dbe8cb7b43aade1eb67e66","isrc":"QMHNS1317412","name":"Generator Engine 1","registered_at":"2026-06-17T20:40:02Z","spotify_id":"4tUSaRbEyFsJYp8JoF7uOE","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 0x78f3d85ecee9a5ed425141d3362d0f6c3fa78a50e0dbe8cb7b43aade1eb67e66. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4tUSaRbEyFsJYp8JoF7uOE.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/4tUSaRbEyFsJYp8JoF7uOE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f6cf6a27574015240f665cb4964240c296c8db84f02c5182d7a89eacf2d38f. 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/6ow1De6QwZMLztVknyBLyj.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/6ow1De6QwZMLztVknyBLyj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0173e608e1f2997dfb41e45544d6b2168e88d4d4ec0776e13ec4da95503fd2cf. 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/3aVE1c59avZuFCV93FO6Iz.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/3aVE1c59avZuFCV93FO6Iz.
{"copyright_id":"0x78f3d85ecee9a5ed425141d3362d0f6c3fa78a50e0dbe8cb7b43aade1eb67e66","isrc":"QMHNS1317412","name":"Generator Engine 1","registered_at":"2026-06-17T20:40:02Z","spotify_id":"4vAD7eqOiBcfFgKKVENk9y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f3d85ecee9a5ed425141d3362d0f6c3fa78a50e0dbe8cb7b43aade1eb67e66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4vAD7eqOiBcfFgKKVENk9y.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/4vAD7eqOiBcfFgKKVENk9y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f6cf6a27574015240f665cb4964240c296c8db84f02c5182d7a89eacf2d38f. 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/3aSvPPh6exlmU4vLRVcb9R.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/3aSvPPh6exlmU4vLRVcb9R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465761635394ea41c419cb8c7070cbb18f40dcb6ab25d74eaf95443c42d3cb09. 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/04dT4s0vKKI1vFUgsb4yL8.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/04dT4s0vKKI1vFUgsb4yL8.