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 0x3a881b0fc612e96c630abbf43b10c5f344717e533f8835bbc460275df2cc7b2b. 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/aab5434b-20ec-4e76-b778-461f15797780.json and https://artists.proofprofile.net/proofs/artist/aab5434b-20ec-4e76-b778-461f15797780.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x2aa1b1bbfdfcd594bf676171b3023afe5448b4fb63499f24beb91b95958a38ca","isrc":"ITUM72000067","name":"Musica (El Resto Es Nada)","registered_at":"2026-06-28T22:38:26Z","spotify_id":"2W2izwWmXvLnVCIBUj1p5o","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 0x2aa1b1bbfdfcd594bf676171b3023afe5448b4fb63499f24beb91b95958a38ca. 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/2W2izwWmXvLnVCIBUj1p5o.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/2W2izwWmXvLnVCIBUj1p5o.
Te Quemas (feat. Samurai Jay & MamboLosco) - Remix
{"copyright_id":"0x6dbf935c50ac436364f7bd62c906f0ed8376d0a330fa0fecb5c5bf4d4ff52b7d","isrc":"ITUM72300754","name":"La Falda","registered_at":"2026-06-29T04:34:18Z","spotify_id":"4l7amr2LM3olimvihIth9t","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbf935c50ac436364f7bd62c906f0ed8376d0a330fa0fecb5c5bf4d4ff52b7d. 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/4l7amr2LM3olimvihIth9t.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/4l7amr2LM3olimvihIth9t.
Do They Know It's Christmas? - 1984 Version
{"copyright_id":"0xaa1f5b7568542820d6a13711e492c6a6505e285d7b79fe3011a64f2f8740964a","isrc":"GB7TP2000314","name":"Whoppa (feat. Elettra Lamborghini)","registered_at":"2026-06-07T20:03:30Z","spotify_id":"74SKgfapttDKhCOo1OQWzT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1f5b7568542820d6a13711e492c6a6505e285d7b79fe3011a64f2f8740964a. 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/74SKgfapttDKhCOo1OQWzT.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/74SKgfapttDKhCOo1OQWzT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb0b365ad796d5178dae53c915c2be48498b3fbe2a27b75ec614971b64eec96. 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/3Mx0B6Q36VSPBxa9CAuMti.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/3Mx0B6Q36VSPBxa9CAuMti.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737b8b92c2cbcc4eb16c6310520cb0746756d7c7eb1e988681a713c117d34f04. 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/6O1rGDWqL1pgp7H59G2q80.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/6O1rGDWqL1pgp7H59G2q80.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165595d0f70f38d51c5ba8446a05a093c3241e9e7994d16feb89f5a316834341. 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/0OZve9xPEEQHYuma6AqIfm.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/0OZve9xPEEQHYuma6AqIfm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737b8b92c2cbcc4eb16c6310520cb0746756d7c7eb1e988681a713c117d34f04. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6y11YcIJrsRF6n9Dsp9OsY.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/6y11YcIJrsRF6n9Dsp9OsY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf015fd67dc254966652e409034675920a666f44c23810ee6e79df1944361b912. 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/27pWhfK0wkbF8m9WEHK5vx.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/27pWhfK0wkbF8m9WEHK5vx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737b8b92c2cbcc4eb16c6310520cb0746756d7c7eb1e988681a713c117d34f04. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5QA5MysBSleaHBu1XjAVwt.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/5QA5MysBSleaHBu1XjAVwt.
Cupido (with Khea & Duki feat. Quavo & Elettra Lamborghini) - RMX
{"copyright_id":"0xa5732ef5398df25f0acd214648d2c45ab96ff4e5370f43d5c01486ae01ea1839","isrc":"ITUM71801136","name":"Cupido (with Khea & Duki feat. Quavo & Elettra Lamborghini) - RMX","registered_at":"2026-06-04T15:48:18Z","spotify_id":"10CEiNq9vx9UH9mXQkG6H6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5732ef5398df25f0acd214648d2c45ab96ff4e5370f43d5c01486ae01ea1839. 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/10CEiNq9vx9UH9mXQkG6H6.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/10CEiNq9vx9UH9mXQkG6H6.