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 0x09b2d7a9fd243619acd4e6fc461cdd2dd6f0f20e8286c4cf098d93cf517d963b. 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/3f14ec73-2f59-4f36-a9b9-e01af2a59eb0.json and https://artists.proofprofile.net/proofs/artist/3f14ec73-2f59-4f36-a9b9-e01af2a59eb0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa4c5593cc1d8ad84124e50120ccc0f016b08611de3feb8f18af72e4c28169328","isrc":"QZKDK2094535","name":"Non#Destination Trip","registered_at":"2026-06-07T14:31:15Z","spotify_id":"6HhHovBNytXUlavi1cR0Tf","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 0xa4c5593cc1d8ad84124e50120ccc0f016b08611de3feb8f18af72e4c28169328. 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/6HhHovBNytXUlavi1cR0Tf.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/6HhHovBNytXUlavi1cR0Tf.
Progressive Fancy (Ayatsugu Otowa Remix)
Arcaea Sound Collection: Memories of Light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2eae46223924449f37d36fb3162f219e9453b042ddbb4ad77011180f72fdb40. 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/7cb6RVxEJQN9nCP6CJaGVg.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/7cb6RVxEJQN9nCP6CJaGVg.