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 0x5a3151cfb53acc3829e793399641bbe72ea74538f48b1b736b5e7d7bc96cc1a3. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/132c40cc-7b52-4136-8e98-ad45bc1f3155.json and https://artists.proofprofile.net/proofs/artist/132c40cc-7b52-4136-8e98-ad45bc1f3155.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xd1bb9552aa1a083bb20cfd5cb6f0d30b768331ec1cf03704c257da4baa44df65. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCADO1827859.
Mr. World (feat. Sander W. & Sandëro) [Sander W. & Sandëro Remix]
Mr. World (feat. Sander W. & Sandëro) - Sander W. & Sandëro Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e87ddc40f9c9ae20fec62280df5dd4dff146f0bb1b079768be528b3af824087. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BE4HK1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e324b41b314979d312d90ec221fcc4df08a91769d33ce984ce8ad9e495c3e5. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR59R1826756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e04a91f6e77764c850961c775140d5f35a456f1b99d98eb0824b90fecf60020. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ71960643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aa02d4032f2f97d0b475f7049275926f1f1663cf1e0f26ab9e93d977704aaa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITTU42000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f55313afd9ab634b462b553e7ea932e1f5f6941d6cc830548bcd119ea726783. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITTU42000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e04a91f6e77764c850961c775140d5f35a456f1b99d98eb0824b90fecf60020. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFZ71960643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0e6b3c65f2582254e65306ba2b173d8fab836ef57d71141dd6028152f94a26. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITTU42000006.