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 0x02c126abd61d51a7d14e9963da9ff100f4772adccd505534c32fb1f385a7365e. 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/7fc3f16c-f01a-4d32-92f2-2641b74ccf3e.json and https://artists.proofprofile.net/proofs/artist/7fc3f16c-f01a-4d32-92f2-2641b74ccf3e.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 0xc51b4ad332f80387edb8dc6c3441b7c4446b9752f1682536a23d962f476b4097. 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/0NNhUsJRfI76Xja34b6Fzi.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/0NNhUsJRfI76Xja34b6Fzi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db1bf85cfdd09cd9418870b08f60fdee66f3171e2e7651b1d154aeca4a5b68d. 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/7qioHnt9AUFtG0JE1F7Y7b.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/7qioHnt9AUFtG0JE1F7Y7b.
L’actu du rap indépendant - Addictive Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720cd400c24aad1fe63f40a59264cee1a348396ac8732d0dc7d05ddd3142e090. 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/5QdM03i6Fn3z2aqAZs83tK.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/5QdM03i6Fn3z2aqAZs83tK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fbcf9c12b591a4a076a78110f229c7833cd653666b76aca4ecff637e040819. 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/3USi4d6aUSYlmsR7uPW9sx.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/3USi4d6aUSYlmsR7uPW9sx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9882130af23b2a63166051974493b55b575fe8acc9ab36858234defab9b5d6. 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/3eYUNWSle3gu80sCHjVH28.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/3eYUNWSle3gu80sCHjVH28.