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 0x2c353b3ace18676f0cda925f95752574c7e896503e28be6c6aff401b62fe55ad. 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/5a281e1f-c631-42d3-becf-380d941eaf99.json and https://artists.proofprofile.net/proofs/artist/5a281e1f-c631-42d3-becf-380d941eaf99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xc1995e2202d7394ed3da6347e27101daf01dcfdc93efcc8ee6ea71089196e7d0","isrc":"QMSTJ1102929","name":"Prometheus Rising","registered_at":"2026-06-29T09:09:37Z","spotify_id":"2ajX0uNuIZEnNpcZRckZr2","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 0xc1995e2202d7394ed3da6347e27101daf01dcfdc93efcc8ee6ea71089196e7d0. 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/2ajX0uNuIZEnNpcZRckZr2.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/2ajX0uNuIZEnNpcZRckZr2.
Serenata Immortale - (2023 Vinyl Master)
{"copyright_id":"0x413b94e04d87baa296334e9214cf97568ba7884bf83935fefb409c93a27fb35e","isrc":"QMSTJ1405609","name":"Serenata Immortale","registered_at":"2026-06-21T06:50:22Z","spotify_id":"2lkJUOHpujTTe1qKaznSeG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413b94e04d87baa296334e9214cf97568ba7884bf83935fefb409c93a27fb35e. 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/2lkJUOHpujTTe1qKaznSeG.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/2lkJUOHpujTTe1qKaznSeG.