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 0xc88a86f91e4c17d287abee5fac2b815d3ff1570f145dd981706d15373a0ebf93. 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/5adeb25e-623c-43d2-9a79-092909960865.json and https://artists.proofprofile.net/proofs/artist/5adeb25e-623c-43d2-9a79-092909960865.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 0xf7bb8c0c4cf2bbf051066c0a16bc405ed3f23460f0f553c2c40447e08546aef5. 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/6zb75WYzWnr7Weu7Lexk1J.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/6zb75WYzWnr7Weu7Lexk1J.
En Directo Desde El Metropolitan (Mexico D.F.)
David Summers y Pedro Andrea en Concierto (En Directo)
{"copyright_id":"0x5b5c7f423e2d5bc4768952009b87a7efcfa6c681d468bc3e4cdadf1405054b71","isrc":"MXF011500462","name":"Empaqué (feat. David Summers)","registered_at":"2026-06-24T20:49:24Z","spotify_id":"2iDUpGdcnuDp4wQ0vJfNAB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5c7f423e2d5bc4768952009b87a7efcfa6c681d468bc3e4cdadf1405054b71. 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/2iDUpGdcnuDp4wQ0vJfNAB.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/2iDUpGdcnuDp4wQ0vJfNAB.
{"copyright_id":"0x2cf0f78d05d8915b534e777e11f5dde41ec53495203fe8841f463d9ec024787e","isrc":"FRX872144457","name":"Canción Para Quedarse En Casa","registered_at":"2026-06-20T06:29:48Z","spotify_id":"5P2eqZsiGR9ZjtXUPi6RpK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf0f78d05d8915b534e777e11f5dde41ec53495203fe8841f463d9ec024787e. 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/5P2eqZsiGR9ZjtXUPi6RpK.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/5P2eqZsiGR9ZjtXUPi6RpK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c451581dc2aa2f6edeecaab87385dbe5bfa43ff662deae9788a57d3bef453c2. 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/5Z3eEWd02O1RekV96ohDPx.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/5Z3eEWd02O1RekV96ohDPx.
Cien gaviotas donde iran... Un tributo a Duncan Dhu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96615eab92b02369af4ba3e5c7076e052e8c77229f90b94040fc35f0e8d32d9. 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/44sStvzbwxPGIOs7V7rSX4.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/44sStvzbwxPGIOs7V7rSX4.
{"copyright_id":"0x798b5d0dc7ffb5501515ffcd83c23fd492a9d5d13ae8576d26862902ec8721b1","isrc":"MXF011000822","name":"El Abandonao (with David Summers)","registered_at":"2026-06-07T12:41:57Z","spotify_id":"1bkxYUhrpWQgbXIbiLynVi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798b5d0dc7ffb5501515ffcd83c23fd492a9d5d13ae8576d26862902ec8721b1. 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/1bkxYUhrpWQgbXIbiLynVi.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/1bkxYUhrpWQgbXIbiLynVi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b5f66f2065533d0432a8577bc3406b098d8d843a12867c48656461e4733753. 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/76tLV6qm8kTn3a892c4KZQ.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/76tLV6qm8kTn3a892c4KZQ.
El Ataque de las Chicas Cocodrilo (feat. David Summers)
{"copyright_id":"0xfe26138e504c9e65f8d5e6e6fe0ca03a123a1801a88d2acc276f2c2c51da9935","isrc":"MXF011700109","name":"El Ataque de las Chicas Cocodrilo (feat. David Summers)","registered_at":"2026-06-04T08:33:33Z","spotify_id":"37nkBacdEHmvBZPzlQKDth","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe26138e504c9e65f8d5e6e6fe0ca03a123a1801a88d2acc276f2c2c51da9935. 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/37nkBacdEHmvBZPzlQKDth.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/37nkBacdEHmvBZPzlQKDth.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d95469d0178cb0d80a2e315595d762df492c404249037a2d287641e30a7f12d. 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/5zcQF7SXvWi4gO6yDBbN8Y.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/5zcQF7SXvWi4gO6yDBbN8Y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de2a8835d770db1b9cb5def3d0d6259f6d648dfae76eb215e75b039f30be26b. 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/13AD9WSKhLSAZ8awiYofHp.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/13AD9WSKhLSAZ8awiYofHp.