1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b1edd626d8d0de8a9d598dd9a2f9419aaf13085ccc42ab5af3e2928e2be277. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/535f7f62-6e2f-454c-9fac-cb4aa8de1e32.json and https://artists.proofprofile.net/proofs/artist/535f7f62-6e2f-454c-9fac-cb4aa8de1e32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
אל תזכירי את ברונו - מתוך "אנקאנטו"/ גרסת הפסקול
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83547d1447cf924db53aab0657e39b85dcc1e188ff006274a93fe94aec0ebec. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12214151.
משפחת מדריגל - מתוך "אנקאנטו"/ גרסת הפסקול
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513dbdf1f6be96b153a69c0dc24ee774d5d7dce17af382986793ee4a50f0f386. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12214148.
יש עוד לגלות - מתוך "אנקאנטו"/ גרסת הפסקול
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e456c3586f647c0ae0370ac22f15d6306dc4abf60b491c499ac0333e7adf927. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12214152.
תן לנס שלי לקרות - מתוך "אנקאנטו"/ גרסת הפסקול
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0ff09689d2f5259eb69e49d7477da54c6a8af74535ec8aec81da172ff4d9f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12214149.
הנס נמצא בנו - מתוך "אנקאנטו"/ גרסת הפסקול
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580dfc85bb68cd4f65e135a556a76263177dafd7c2facb1f7c4c37aacf4dd5d2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12214153.