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 0x5b6c2adfee17b8852191c1a510f36a1e38e36e9a0c7244e6ab44098ca86046ad. 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/b80ff5a5-014d-4886-baf5-5945343a1404.json and https://artists.proofprofile.net/proofs/artist/b80ff5a5-014d-4886-baf5-5945343a1404.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 0x14e033c20f24eb4e5f760b8ac0540889baa75c0b91d9c1f759f2b07f7623220d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2dhJSEjtsovpaLvefEL9ZD.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/2dhJSEjtsovpaLvefEL9ZD.
{"copyright_id":"0x7e32e3571a6fe4287bfa3197a3aaa782e4e799da074b35f5a66d2a2dee700beb","isrc":"ZAZK92400005","name":"Lady Soul","registered_at":"2026-06-25T15:36:07Z","spotify_id":"06CGwX4JheHXam7xlJbASJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e32e3571a6fe4287bfa3197a3aaa782e4e799da074b35f5a66d2a2dee700beb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/06CGwX4JheHXam7xlJbASJ.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/06CGwX4JheHXam7xlJbASJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140c65f39c763033477c33c5507b55511a616008f82fe50d65fce3debadd7800. 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/7FWfQVlcnDdRu9JTmHW3sF.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/7FWfQVlcnDdRu9JTmHW3sF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef2cc59160ff7a4e2d1e6df6db345681c4ea1584f071757be5da567bd02df3e. 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/6d3GBqynymPpPhhznB3u83.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/6d3GBqynymPpPhhznB3u83.
uNobubele (feat. Mvzzle & Mazet SA) - Radio Edit
{"copyright_id":"0x32d610841344bd77e0f58d3ad2993ca23c8d84fa91a99f6db53eccb937ecda2b","isrc":"ZAA012200083","name":"uNobubele (feat. Mvzzle & Mazet SA) - Radio Edit","registered_at":"2026-06-25T13:31:21Z","spotify_id":"2uqNUTMd8evgJw4PriSSLR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d610841344bd77e0f58d3ad2993ca23c8d84fa91a99f6db53eccb937ecda2b. 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/2uqNUTMd8evgJw4PriSSLR.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/2uqNUTMd8evgJw4PriSSLR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97561cec873e7f9ca3498272a4bdee1af5409ea0f4e288572f5d06ddeeb74133. 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/0FQBDy4zr4XcpMN8KkAkCW.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/0FQBDy4zr4XcpMN8KkAkCW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c75d7cf3e96d5f53c877d4b968039909c50192c56c63c540944f4b39ed3eeaa. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0RHz6Vire0nWHcvwC6bvPf.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/0RHz6Vire0nWHcvwC6bvPf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea3944d596852023f8a64669fef70e347d40febe655acca98bb6fbdf96513ef. 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/0sUK2HwclQH2JVPMolTa8d.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/0sUK2HwclQH2JVPMolTa8d.