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 0xf0b9f37f9ab89d6eb0e230e32142b7f920d8e7d36dfd724561e761e730ec8d4c. 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/006d2803-d881-49ff-9f69-bba0c9e5fb58.json and https://artists.proofprofile.net/proofs/artist/006d2803-d881-49ff-9f69-bba0c9e5fb58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x292dca0c3e682f45bf0454c8e9b76f5c83d62572d45e1d2f806a59d6ce33db83","isrc":"USHEL0704101","name":"Prelude: Signal Return","registered_at":"2026-06-28T20:07:47Z","spotify_id":"6Ins2DoYezZkfG4h22Wcop","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 0x292dca0c3e682f45bf0454c8e9b76f5c83d62572d45e1d2f806a59d6ce33db83. 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/6Ins2DoYezZkfG4h22Wcop.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/6Ins2DoYezZkfG4h22Wcop.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ee530258783b6ada60274e479da41d3a9a52fb9ea3e8b29f5d79fd9db4b275. 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/7kxDPPTyZJaXtJW8BT1qDr.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/7kxDPPTyZJaXtJW8BT1qDr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c95e65628fb51340224828a786f48ed9e43ac592e91bc446bc6697242fa7834. 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/4LCp2IIXYKneRiqkI7EPkS.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/4LCp2IIXYKneRiqkI7EPkS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff654b03a6213fb52f921f9f990b8994bc5eef0aa705efc5cba059dc0afc7c6. 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/551d5XsENrun4sS5jOkZRh.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/551d5XsENrun4sS5jOkZRh.
{"copyright_id":"0xc974948cd3c14e94194d3998d1491e12de72b4cfa2ea384b2dc7ac4e02fad7ac","isrc":"USWD10834701","name":"Oogie Boogie's Song - Bonus Track","registered_at":"2026-06-07T13:25:38Z","spotify_id":"73BVEqpSi9kZAT4eljdmCo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc974948cd3c14e94194d3998d1491e12de72b4cfa2ea384b2dc7ac4e02fad7ac. 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/73BVEqpSi9kZAT4eljdmCo.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/73BVEqpSi9kZAT4eljdmCo.