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 0xfa6e7d12ae8c2babb05f9d9bb2e36c49a86e95c4366da5697efc12c31222a667. 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/50620b22-8826-4213-8cd7-410676c2f85d.json and https://artists.proofprofile.net/proofs/artist/50620b22-8826-4213-8cd7-410676c2f85d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Al Mundo Le Falta Un Tornillo - Versión Alternativa
Al Mundo Le Falta un Tornillo - Versión Alternativa
Vintage Tango No. 65 - EP: Canta Julio Sosa
Mi Buenos Aires Querido / Volver / El Día Que Me Quieras
Mi Buenos Aires Querido / Volver / El Dia Que Me Quieras
Antología: La Colección Definitiva (Remastered)
Al Mundo Le Falta un Tornillo - Remastered
Para El Recuerdo - Tangos De Armando Pontier
Poema De Arrabal - Instrumental, Remastered 2025
Vintage Argentine Tangos (1928 - 1954), Vol. 2
{"copyright_id":"0x019cb67bcc6c3f41411a19ea0d6c09d19c29e41a1f17d97100ef051dad226e9f","isrc":"ARF037900017","name":"Carrillón de la Merced","registered_at":"2026-06-26T01:07:26Z","spotify_id":"4cWLaf3r1ckVmCurwAVwAO","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 0x019cb67bcc6c3f41411a19ea0d6c09d19c29e41a1f17d97100ef051dad226e9f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4cWLaf3r1ckVmCurwAVwAO.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/4cWLaf3r1ckVmCurwAVwAO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad97e154bdcc065327160201b162f1fcb1a937ed8a693248a0f473664939d02d. 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/1IU4Tq9toArBH7dincawc6.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/1IU4Tq9toArBH7dincawc6.
{"copyright_id":"0x6ff0f7e13c91b8cd0fe6e88d72e135a91fc280fcdb9c2a02a482a2c0874bb199","isrc":"ARF036900127","name":"Barrio de Tango","registered_at":"2026-06-22T03:06:02Z","spotify_id":"4PXnwRGWH9VKDxdf09JV6e","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff0f7e13c91b8cd0fe6e88d72e135a91fc280fcdb9c2a02a482a2c0874bb199. 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/4PXnwRGWH9VKDxdf09JV6e.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/4PXnwRGWH9VKDxdf09JV6e.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315514e102e068a501c38e2e554de247b0775370b56d750512e2552fa51eb580. 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/64KazWwt9eZm8zqBPy46J7.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/64KazWwt9eZm8zqBPy46J7.