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 0x0428fd7ad47bea0d7360a1725e69bf129d25a075fbafb2a76f1d270636825d07. 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/717ded8f-5970-4774-b8ae-7905351d7f19.json and https://artists.proofprofile.net/proofs/artist/717ded8f-5970-4774-b8ae-7905351d7f19.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 0xf3abf27a76aa71a24b7516baff9fc689f6c794134ba534dcd7c08983c7b4a749. 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/1H3VxVwH0NPRf19jwUoYLr.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/1H3VxVwH0NPRf19jwUoYLr.
Qui Nem Giló (Saudade) (feat. Arto Lindsay)
Ipanema (feat. Malika Ayane & Carlinhos Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b76dc4eddcfb4f84f29d6749cb30db02097ae831ce076e7d1104551042d0f38. 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/2bBgNQvPix1fFGYv845GKB.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/2bBgNQvPix1fFGYv845GKB.
Fammi Scrollare (feat. Willie Peyote & Emicida)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d2d20f8eb45efde206ee5973707f189f3dbf299d83687a3d1d30dc676d6267. 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/0H72TPtI3fkyOBenuoVTUW.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/0H72TPtI3fkyOBenuoVTUW.
Vieni a dormire da me - Chorinho Version / Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014d3ca83edde502bec18cb43b7b2f8586453c960a30075fb08cf2c60df66102. 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/35PzCIs7dmWkMAPYeqyYPx.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/35PzCIs7dmWkMAPYeqyYPx.
{"copyright_id":"0xccc1019bd4d096dfe47d6b566a64110e00f89908f51a0cacec8550bdbf9f62a0","isrc":"ITT742100013","name":"Sesso, droga e lavorare (ALBI #2)","registered_at":"2026-06-20T02:58:10Z","spotify_id":"12dkMemsHIzO0noIazdPkA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc1019bd4d096dfe47d6b566a64110e00f89908f51a0cacec8550bdbf9f62a0. 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/12dkMemsHIzO0noIazdPkA.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/12dkMemsHIzO0noIazdPkA.
Amalia Fado (feat. Vanessa Da Mata & Selton)
{"copyright_id":"0x49ba07298df0642d67c292ad4f4810ec2112ce2f2ca8b90a0ed6b5637ce7f5e2","isrc":"ITB001800537","name":"Amalia Fado (feat. Vanessa Da Mata & Selton)","registered_at":"2026-06-10T02:31:23Z","spotify_id":"3GeA9iOgakszidDbTmu3TV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ba07298df0642d67c292ad4f4810ec2112ce2f2ca8b90a0ed6b5637ce7f5e2. 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/3GeA9iOgakszidDbTmu3TV.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/3GeA9iOgakszidDbTmu3TV.
{"copyright_id":"0x210d52279e57cd00cb969f3dde7f0a06d2ac95379f4385ddb9de6bdf844f284b","isrc":"ITB002100983","name":"Io e Te (De Leve) – feat. Selton","registered_at":"2026-06-08T11:09:38Z","spotify_id":"7N2c0CSoMRLa6OGbJgGSr2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210d52279e57cd00cb969f3dde7f0a06d2ac95379f4385ddb9de6bdf844f284b. 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/7N2c0CSoMRLa6OGbJgGSr2.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/7N2c0CSoMRLa6OGbJgGSr2.