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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29dc08d2430dc061218ab275fb590aac0eba1361c4358df5830cb0bc65205c9. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67ef3fea-5a9c-42cc-924f-38a4ea547a17.json and https://artists.proofprofile.net/proofs/artist/67ef3fea-5a9c-42cc-924f-38a4ea547a17.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vision Winners: Europes Song Competition Past Winners
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e75ae1822f770812f0d464f4de841fac940f47240875a3f90795bfc2e310357. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:41:12Z), 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/QMVRR1634222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d543488da1f010d5f65f58fc33624479557f480a961803e1a0ef623b7eca47. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMVRR1634225.
Love Shine A Light (From "Eurovision 1997")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ea6c89b141bd1f56ac385093f13b54c0985f00eeb37e8fd021a077d04138d4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QMVRR1634234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbc3dbb8ceb01f76cc808eef6b48b4c1e2cb72cb08f00c7d7d2639b018a6f06. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMVRR1634237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651c0cd6120d690221ad75925479c68dd06948e649195d93da9c21d5db766452. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMVRR1634246.