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 0xa9542e4d55defdb871eab9a930ac4a196af8907c4d21677db7d9ac9d3c2d70eb. 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/cb74c272-f8d0-447a-9a66-50e215fe6c04.json and https://artists.proofprofile.net/proofs/artist/cb74c272-f8d0-447a-9a66-50e215fe6c04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa65d9d6de1540be0452f21618e230a1fe8556aa4291659306c13d5eab845709d","isrc":"QZHN71939299","name":"Without Suspicion","registered_at":"2026-06-29T08:25:02Z","spotify_id":"1YOxJwUFWphMyYXXOvpFAV","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 0xa65d9d6de1540be0452f21618e230a1fe8556aa4291659306c13d5eab845709d. 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/1YOxJwUFWphMyYXXOvpFAV.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/1YOxJwUFWphMyYXXOvpFAV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92041bb537d0b4b65fbed63220ba9a15ce7671f66eb60478131750381f179506. 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/2nSjv86sbg8PANMKlNWiuv.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/2nSjv86sbg8PANMKlNWiuv.
Emma (Music from the BBC Television Series)
Home Fires (Music from the Television Series)
On a Knife Edge (Original Motion Picture Soundtrack)
Mad Dogs (Original Television Soundtrack)
A Cruel Love: The Ruth Ellis Story (Original Television Soundtrack)