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 0x1ff18eebe9a07bc3792f31e2db373940935ffd3ce402c789d50bc5f326145729. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7679c853-1998-4957-b6b3-7dc63363e886.json and https://artists.proofprofile.net/proofs/artist/7679c853-1998-4957-b6b3-7dc63363e886.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Follow (with Jeremih) [Dillon Francis Remix]
{"copyright_id":"0xf940a949c655ce771e90887dca302535c0d317be2592adcbe821f8f69122b78a","isrc":"USUG12003688","name":"Follow (with Jeremih) [Dillon Francis Remix]","registered_at":"2026-06-05T19:44:37Z","spotify_id":"2eomAcNgNQTogi2Y4apBKh","type":"track"}
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 0xf940a949c655ce771e90887dca302535c0d317be2592adcbe821f8f69122b78a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2eomAcNgNQTogi2Y4apBKh.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/2eomAcNgNQTogi2Y4apBKh.
{"copyright_id":"0x7d43af7175af0ac1a57d497a6708f8a9ff21d027e80576e8be9f0bec12ef29c6","isrc":"USUM72014918","name":"Follow (with Jeremih)","registered_at":"2026-06-05T04:22:04Z","spotify_id":"4PZlvOWqPuXyl7OcpkmW2m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d43af7175af0ac1a57d497a6708f8a9ff21d027e80576e8be9f0bec12ef29c6. 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/4PZlvOWqPuXyl7OcpkmW2m.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/4PZlvOWqPuXyl7OcpkmW2m.
{"copyright_id":"0x1204ae99fa1b4da18a505dabf63eb3f47d202a31c6b57d311345fcc1d83e9b70","isrc":"USUG12100928","name":"Sky Is Crying","registered_at":"2026-06-04T15:00:17Z","spotify_id":"3couLi8ezVlXXoMHMHErlw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1204ae99fa1b4da18a505dabf63eb3f47d202a31c6b57d311345fcc1d83e9b70. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3couLi8ezVlXXoMHMHErlw.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/3couLi8ezVlXXoMHMHErlw.
{"copyright_id":"0x7d43af7175af0ac1a57d497a6708f8a9ff21d027e80576e8be9f0bec12ef29c6","isrc":"USUM72014918","name":"Follow (feat. Jeremih)","registered_at":"2026-06-05T04:22:04Z","spotify_id":"3FOkUuG0RjS4rEPRaOSuhR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d43af7175af0ac1a57d497a6708f8a9ff21d027e80576e8be9f0bec12ef29c6. 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/3FOkUuG0RjS4rEPRaOSuhR.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/3FOkUuG0RjS4rEPRaOSuhR.
{"copyright_id":"0x02e6137fd257ca25161edf8f4b2afeaeff62ca47236027af77043f662c34a9e5","isrc":"QZD442000780","name":"Die A Little Bit (Remix)","registered_at":"2026-06-05T19:57:06Z","spotify_id":"0cBPhFzSCEH9Bdc8N5xqKW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e6137fd257ca25161edf8f4b2afeaeff62ca47236027af77043f662c34a9e5. 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/0cBPhFzSCEH9Bdc8N5xqKW.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/0cBPhFzSCEH9Bdc8N5xqKW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90b9c4e4e3b1add19660090b38f46d829e3d0dcacb31550c7a4c6b5afc4da37. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6hIFc8n6iI9r6NBpVA0Fyl.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/6hIFc8n6iI9r6NBpVA0Fyl.
{"copyright_id":"0x6d4f5565c81bf138dca063d42dc2236ce716da46ae35462f02ac51484498f163","isrc":"CA5KR2282632","name":"Lil Mama - Illusionize Remix","registered_at":"2026-06-05T17:09:37Z","spotify_id":"3fYARCtW774Ad6noiTkjqS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4f5565c81bf138dca063d42dc2236ce716da46ae35462f02ac51484498f163. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3fYARCtW774Ad6noiTkjqS.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/3fYARCtW774Ad6noiTkjqS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5926b6e3f80f259f9f50e33404537481bb0ea2dea3516546818d8ffb23a44bc. 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/42gSzLeOsAUcpk0ZXoCIov.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/42gSzLeOsAUcpk0ZXoCIov.
{"copyright_id":"0x85b88573826547c47b6dec3d67c25dd0b5f146eeebedffe521fdddd79edf148d","isrc":"USUG11904244","name":"No More (feat. ZHU) - Devault Remix","registered_at":"2026-06-09T06:17:38Z","spotify_id":"51pTnOUQBceCqX9LZfLy78","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b88573826547c47b6dec3d67c25dd0b5f146eeebedffe521fdddd79edf148d. 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/51pTnOUQBceCqX9LZfLy78.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/51pTnOUQBceCqX9LZfLy78.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5926b6e3f80f259f9f50e33404537481bb0ea2dea3516546818d8ffb23a44bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1j4MPw77pRZ77fMBuaRCZl.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/1j4MPw77pRZ77fMBuaRCZl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf97583e808e789d2f8e185800cc551a9ed508f8716520eb09a89eb45c09a4a2. 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/483n1AQ8X3rT3ILd2tp9Y7.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/483n1AQ8X3rT3ILd2tp9Y7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e38a82160449a71b9cd99c51dcc6ac92964242986a69e33af81d4a1aebca95. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2HxaymsvYQpZLD3FWWE1NV.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/2HxaymsvYQpZLD3FWWE1NV.