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 0xeccbee90a1387ec7fab237253b578f065a217b9e933ed360a67385586c2eb4f5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05d421f7-3f26-4b7d-b500-af22970705f6.json and https://artists.proofprofile.net/proofs/artist/05d421f7-3f26-4b7d-b500-af22970705f6.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 0x2fc7c4ffa26ce4e94d96f01861a210cdd4453009cf60b3f71f09f9c2c558ad34. 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/4NelexmhJ4l7DvlcvREykT.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/4NelexmhJ4l7DvlcvREykT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a987c9ec877b80c58000173cc7a65e5303ea331cc27cb640bc12330940f67a. 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/3XN07Hnu1o8M2DvGo3wYFC.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/3XN07Hnu1o8M2DvGo3wYFC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf774694a4bf68c38563c0ff9435da733e35f468b193a195a0c9e83dddde9d0. 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/6Z1j5nq7JlG75xI9O4Wmmh.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/6Z1j5nq7JlG75xI9O4Wmmh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d95c6613c46e66f6a455d01c7b8a4ec4d26397cf65b1077589b7d18f89efd3. 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/4VmqQtpfKpWTsVRM6tRgpr.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/4VmqQtpfKpWTsVRM6tRgpr.
{"copyright_id":"0x154ba42f451914d9df08425c38e153dba549cf195969c6ecafd12eb00be63078","isrc":"USLD91723800","name":"Now I Give No Phucks (feat. Kamandi)","registered_at":"2026-06-18T17:24:07Z","spotify_id":"7v3rCsCyLB6J7ooiM2W7SN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154ba42f451914d9df08425c38e153dba549cf195969c6ecafd12eb00be63078. 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/7v3rCsCyLB6J7ooiM2W7SN.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/7v3rCsCyLB6J7ooiM2W7SN.
{"copyright_id":"0xce466ce46e0c70c6166a81367bda6b085cd6f44bcba9cc50817b2fbff0d2af8b","isrc":"TCAED1954818","name":"No Phucks Given","registered_at":"2026-06-08T19:54:14Z","spotify_id":"5jmG5mi6cQ2r5tMTtMFRUa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce466ce46e0c70c6166a81367bda6b085cd6f44bcba9cc50817b2fbff0d2af8b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5jmG5mi6cQ2r5tMTtMFRUa.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/5jmG5mi6cQ2r5tMTtMFRUa.