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 0x3d13b356e55c64fdbebedac85cdcb6573617a048f7cd3090e8a79ce3f6706480. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2368bb2-41f2-4d89-8c2a-26322fb3271d.json and https://artists.proofprofile.net/proofs/artist/e2368bb2-41f2-4d89-8c2a-26322fb3271d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x1015158e8fec8c28f233de8b95a276ff79e03dc53f2ee6e1b6f3c3d784987de6","isrc":"SE5BU2584223","name":"Just Friends","registered_at":"2026-06-04T10:14:51Z","spotify_id":"0UPIhq9mzhuSfQEPsjphii","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 0x1015158e8fec8c28f233de8b95a276ff79e03dc53f2ee6e1b6f3c3d784987de6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0UPIhq9mzhuSfQEPsjphii.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/0UPIhq9mzhuSfQEPsjphii.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f179a2d22fb0a6c0d417c2b6f40c7e32b2726095d96fe61acb2cb69879996. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1k78wRizkQjUP7ZOVR7kG8.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/1k78wRizkQjUP7ZOVR7kG8.
{"copyright_id":"0x3872e4c03355bcc96448b762cda4e9ab49490a20bed19b67bf12aba9f1a2cbef","isrc":"GXBDT2466041","name":"Without You","registered_at":"2026-06-04T10:08:49Z","spotify_id":"7iDjlgbJjENInchQgubaPI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3872e4c03355bcc96448b762cda4e9ab49490a20bed19b67bf12aba9f1a2cbef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7iDjlgbJjENInchQgubaPI.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/7iDjlgbJjENInchQgubaPI.