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 0x8619998e600f928bb1d05e29e229a4d0781fe975e72ded0da355aac1e6d0d21d. 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/72b29e58-37fb-4aff-9734-af98d992c508.json and https://artists.proofprofile.net/proofs/artist/72b29e58-37fb-4aff-9734-af98d992c508.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 0x0821536e6227ba1ba749ca7fcbc257879ac93c6ff02bbc6d187ea7a18971f285. 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/0uuoUm9JYSDJ0jSKDML3Hr.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/0uuoUm9JYSDJ0jSKDML3Hr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7fe2d6e70ddafb1a39f8dd82eb31180c54c10b47323540b564674474601e59. 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/2hFAqqiOxcZgq7nz1g7ssp.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/2hFAqqiOxcZgq7nz1g7ssp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7720e027766f933b44f8b0375267e5e5ec81778ccb0fcac37415ee3ed405068. 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/49DzDxHRQqbA7GpHjO6wIX.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/49DzDxHRQqbA7GpHjO6wIX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eda18921d5f797aaaa78505f81e9c917b9e25538a1074591eee02000c86a61. 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/4vYN7QYPuVtywRLSSWiCJO.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/4vYN7QYPuVtywRLSSWiCJO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eda18921d5f797aaaa78505f81e9c917b9e25538a1074591eee02000c86a61. 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/0ioymv2HYUWr8sQJQbhiKA.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/0ioymv2HYUWr8sQJQbhiKA.
{"copyright_id":"0x8ab73ca5178b6eb26cc6336c470d669c4bb8acad85ea62fa656b3e87ab1f394a","isrc":"UYB282401120","name":"Angelitos - En Vivo","registered_at":"2026-06-17T22:33:56Z","spotify_id":"3YQuVK48YS9q8MZb1TNBOx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab73ca5178b6eb26cc6336c470d669c4bb8acad85ea62fa656b3e87ab1f394a. 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/3YQuVK48YS9q8MZb1TNBOx.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/3YQuVK48YS9q8MZb1TNBOx.