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 0x8f0e13fbee2f5fdf0a07ac5c8a49e5ac511fe6a3ef03ebe329c8b1a676b51228. 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/ec77159d-0417-4344-9348-cd654e66a7de.json and https://artists.proofprofile.net/proofs/artist/ec77159d-0417-4344-9348-cd654e66a7de.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 0xc3e971a78cb3b279465223e43330a30c92883a57989c593a7f06e3fce6d3f129. 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/4GPrgM7ljkQQMdS4i1zfsW.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/4GPrgM7ljkQQMdS4i1zfsW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66562f41540d52e45be4cdab5170d5f3a422358976e18773126170db64fb68b9. 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/0Aw0JclTP55sM3WjdrOAWD.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/0Aw0JclTP55sM3WjdrOAWD.
{"copyright_id":"0x54ce20ebdcf1da7cba665fc856c9c309adf5664bea5ee3df70c9079fa76b0667","isrc":"SE6XY2182330","name":"WATER PISTOL","registered_at":"2026-06-25T21:11:34Z","spotify_id":"3n7ODOEawgGE2DNhzmqcjm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ce20ebdcf1da7cba665fc856c9c309adf5664bea5ee3df70c9079fa76b0667. 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/3n7ODOEawgGE2DNhzmqcjm.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/3n7ODOEawgGE2DNhzmqcjm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8f33150c1209d7b3ba60ee0ef1c4a92e33bfa8bda94326a848c592d64a3de3. 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/6IeB8LzqzFy6sJd3UCYjmQ.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/6IeB8LzqzFy6sJd3UCYjmQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5c09cef2864d537142ae786dd1a8650516be36e3268aca48dc0dce6fc08d70. 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/0iHgKA3kZMnAZaptnX49ef.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/0iHgKA3kZMnAZaptnX49ef.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238898603a3f9e95d3e9b52476ab84fe704bd930b1a475cc5e32c056a4f4556e. 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/5bkzLZmP4TAZqN5taNjCEx.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/5bkzLZmP4TAZqN5taNjCEx.
{"copyright_id":"0x2adf60928b33a67b5f2d74b6a818922806c17bd52e9d4beffe4cda4ae1e4b126","isrc":"SE6SA2495467","name":"ROLL ME ANOTHA BLUNT","registered_at":"2026-06-10T21:11:34Z","spotify_id":"5XVwVOzRj4mUcm33KaU64a","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adf60928b33a67b5f2d74b6a818922806c17bd52e9d4beffe4cda4ae1e4b126. 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/5XVwVOzRj4mUcm33KaU64a.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/5XVwVOzRj4mUcm33KaU64a.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf785f78d15b2f9739eb0b1d7782d848d50147f12763a70f5c01e400bc2a1b2a5. 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/4RVGs9zw2q6suUO1ClJOBM.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/4RVGs9zw2q6suUO1ClJOBM.