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 0xf4c290ffad231d0c94164c66a858a656aaaab855360315552edef7c9a34a59f8. 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/242c4fc2-06cc-44b7-bfc3-6c6f3ded8bb5.json and https://artists.proofprofile.net/proofs/artist/242c4fc2-06cc-44b7-bfc3-6c6f3ded8bb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
if i never see you again, i will be happy
{"copyright_id":"0x910c05bc11575198fd7c4498db9712d1bbacba2dba93fcffed186780ae05d003","isrc":"NLRD52119897","name":"On Your Face","registered_at":"2026-06-20T12:56:51Z","spotify_id":"3gxx0ll7azln0Ex4wBpnxs","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 0x910c05bc11575198fd7c4498db9712d1bbacba2dba93fcffed186780ae05d003. 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/3gxx0ll7azln0Ex4wBpnxs.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/3gxx0ll7azln0Ex4wBpnxs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd6942bc6a6e9cca69598cef3ee8f35baa65215e4204ba75f8ea4f54c5eacb3. 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/2SMP8T9HRQ9bAEdRLLSNkg.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/2SMP8T9HRQ9bAEdRLLSNkg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726afbb5edd09204a0c35cc8cce99a46585ca6189a91050934f2a2780bd239b2. 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/60sAI7PLH4lsT7ON4aDzAI.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/60sAI7PLH4lsT7ON4aDzAI.
{"copyright_id":"0x2dd35d0dd309807465e7e1722b2f1afaad154933c45c3eb09e2ecfabdfc7f14f","isrc":"NLRD52119928","name":"red nocturne","registered_at":"2026-06-20T12:55:39Z","spotify_id":"6sv3STDqzIjM7ei1lpBCng","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd35d0dd309807465e7e1722b2f1afaad154933c45c3eb09e2ecfabdfc7f14f. 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/6sv3STDqzIjM7ei1lpBCng.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/6sv3STDqzIjM7ei1lpBCng.