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 0x884f2644ad1fe0e89dd74ef0e4396da10d594d274bde1ad06cf9959a111e7710. 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/ffd9ac77-e42a-4df2-9a9a-10a2ae80ef04.json and https://artists.proofprofile.net/proofs/artist/ffd9ac77-e42a-4df2-9a9a-10a2ae80ef04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xf20d4e91baad8cf5ca66824842563c04d992c821daa466aebc5688ae67accf75","isrc":"UYS059600001","name":"Corazón de Cristal","registered_at":"2026-06-29T13:52:17Z","spotify_id":"4WC9LymtzyYuCDMtSG3Mmm","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 0xf20d4e91baad8cf5ca66824842563c04d992c821daa466aebc5688ae67accf75. 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/4WC9LymtzyYuCDMtSG3Mmm.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/4WC9LymtzyYuCDMtSG3Mmm.
{"copyright_id":"0x2b75a0d43a18bdf7579e7b6ef2a527bf692b56a1edb29441b549c5a855e5993f","isrc":"UYS059600004","name":"Jamás Voy a Dejarte (Haz de Cuenta)","registered_at":"2026-06-29T13:49:52Z","spotify_id":"4d8fHe3CYp6bkZ8lM6l1jN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b75a0d43a18bdf7579e7b6ef2a527bf692b56a1edb29441b549c5a855e5993f. 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/4d8fHe3CYp6bkZ8lM6l1jN.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/4d8fHe3CYp6bkZ8lM6l1jN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb3df9203333eeed619a2d37c11b406d7393c89b02c7187ef75a590bc31e186. 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/0KFp3KEc5MYN0vJ89UwjMA.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/0KFp3KEc5MYN0vJ89UwjMA.
Como la Flor No Estoy Llorando Mozo Engañadora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd88198a9ddb89035842423188f52cd50493fc8c467349fa7aa2c8b586e73575. 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/5YXg6AqUX06t8T1rrwZKgd.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/5YXg6AqUX06t8T1rrwZKgd.
Llamada Urbana / La Mujer Que Amo / Eclipse Total del Amor
Una Copa de Mas / La Mujer de Mi Vida / Ya Me Enteré
Como La Flor No Estoy Llorando Mozo Engañadora
Lo Mejor de la Música Tropical Uruguay (70 Años de Cx42)
Lo Más del Siglo Uruguay, Vol. 3 & Vol. 4
{"copyright_id":"0x69378d439722cd563f633c64ca2d8f46d2472aa38b4d1c4ddf544fc2ecdd632c","isrc":"UYM121806235","name":"Vas a Querer Volver","registered_at":"2026-06-08T02:19:09Z","spotify_id":"5OQN5zwVRWxPTLbbOwJvds","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69378d439722cd563f633c64ca2d8f46d2472aa38b4d1c4ddf544fc2ecdd632c. 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/5OQN5zwVRWxPTLbbOwJvds.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/5OQN5zwVRWxPTLbbOwJvds.