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 0x2b64c257eebab00179fb2bfaede76c69cbb4cca892f7f452d6eb81126f972274. 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/ff8983e1-3eae-4059-a6fb-7e5d90d1cc44.json and https://artists.proofprofile.net/proofs/artist/ff8983e1-3eae-4059-a6fb-7e5d90d1cc44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x4e601651296d21ee3ec254b8d7938e43ede2e69e59881621628db897652ad187","isrc":"USDY41574133","name":"El Activista (feat. Raly Barrionuevo)","registered_at":"2026-06-29T13:19:09Z","spotify_id":"4cpUEPMPF0xu1dVjTpfsLa","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 0x4e601651296d21ee3ec254b8d7938e43ede2e69e59881621628db897652ad187. 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/4cpUEPMPF0xu1dVjTpfsLa.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/4cpUEPMPF0xu1dVjTpfsLa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ca6bba10565e4eeb886337179abb37209ed6ad7a7c8947cf14ae9301a130d4. 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/7gSNxg7ER8ytndQlW527Yh.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/7gSNxg7ER8ytndQlW527Yh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907b4a1e5720e3b5dc2ed86dc1c018f1f65805212e1cf26874cd801428a0aa29. 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/1L8dLBChOHFyMhGapiSxNs.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/1L8dLBChOHFyMhGapiSxNs.
Hasta el Final & de Frente al Sol (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3468934b81e8cab7f2674dd97a065553dcf45700e081fdddfc28cb4991061e2. 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/6Z64rcX4toR740wFD9PCvT.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/6Z64rcX4toR740wFD9PCvT.
Hemp! A Reggae Tribute to The Beatles, Vol. II
{"copyright_id":"0xc13263a6caa5b509f8ec76a3aeda842a31ffd0d56b02e4179353fed6d8d3ada0","isrc":"AR1K21300036","name":"If I Needed Someone","registered_at":"2026-06-25T07:29:37Z","spotify_id":"0Rmmj6pGixhkLFqJGxwUpT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13263a6caa5b509f8ec76a3aeda842a31ffd0d56b02e4179353fed6d8d3ada0. 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/0Rmmj6pGixhkLFqJGxwUpT.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/0Rmmj6pGixhkLFqJGxwUpT.