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 0xbaee5ad8d2203ac4dcf096fe4446126badd0daed66ba1ce64bf3edf2aede2b9e. 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/ddfca0a0-74dc-40a7-b559-cfa2b4e37026.json and https://artists.proofprofile.net/proofs/artist/ddfca0a0-74dc-40a7-b559-cfa2b4e37026.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 0x4a2fb639a30a93022bbefb6005b3afb6612824d674f4f5807e60bf9c58320d50. 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/1PbIKx9rhDslGVpW9Fo1Fq.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/1PbIKx9rhDslGVpW9Fo1Fq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a993f25de4c095656ae56898d27eba840994a9cf3cdfae3670116ec9f555e9. 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/3HV3ntf0fCvf6sbUEdiZS8.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/3HV3ntf0fCvf6sbUEdiZS8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6df2a2517205a95a06bcca06c0442a3c5c5311562d29f51d0e7b55fb0bb9df. 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/4itzexeEAY4S4PYBxUid4O.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/4itzexeEAY4S4PYBxUid4O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6df2a2517205a95a06bcca06c0442a3c5c5311562d29f51d0e7b55fb0bb9df. 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/2uSJW6VyeeDUqJvFwR1izB.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/2uSJW6VyeeDUqJvFwR1izB.
{"copyright_id":"0xe4b4fc53b98e2f66db34eb084b6f728dd308d0ae86d05bc2ad0af165278febcf","isrc":"QZHZ52297725","name":"Morir de la Pena","registered_at":"2026-06-04T11:00:06Z","spotify_id":"3afD05djLMYs8Uu6AvLdbq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b4fc53b98e2f66db34eb084b6f728dd308d0ae86d05bc2ad0af165278febcf. 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/3afD05djLMYs8Uu6AvLdbq.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/3afD05djLMYs8Uu6AvLdbq.
{"copyright_id":"0xe4b4fc53b98e2f66db34eb084b6f728dd308d0ae86d05bc2ad0af165278febcf","isrc":"QZHZ52297725","name":"Morir de la Pena","registered_at":"2026-06-04T11:00:06Z","spotify_id":"0RapTUqTnVGQznaJcnefNX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b4fc53b98e2f66db34eb084b6f728dd308d0ae86d05bc2ad0af165278febcf. 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/0RapTUqTnVGQznaJcnefNX.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/0RapTUqTnVGQznaJcnefNX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323e9df4a09aa9043c1fc755044b459b23bc712bfedbc92068b70543732d936e. 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/5znseRP1uqmqPECGi58K4c.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/5znseRP1uqmqPECGi58K4c.