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 0x91ebccdca742a464ba70ce7854c561665f25c7b2e673a39b337096936b042930. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfa2b877-692b-4c6c-9ffd-abcc2ef68662.json and https://artists.proofprofile.net/proofs/artist/bfa2b877-692b-4c6c-9ffd-abcc2ef68662.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 0x478e4a11e42dde621bd083781960f4c361acbaad34b1b5e5e6abf4ffc110a29d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:33Z), 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/ITR632200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbb216cb2abe3ff45bec805bb7ebc84f5fab4dffbde80f221998fd3f05d5d12. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ITR632200315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46280ae36190298df80de9cf45c4c73cbf9aa07d90cb505dd4cbc879ed01cad3. 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/ITR632200311.
Le canzoni dell'estate, Vol. 1 (Super Compilation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46280ae36190298df80de9cf45c4c73cbf9aa07d90cb505dd4cbc879ed01cad3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITR632200311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf999b7d4c6ca01738ce3c48db50b32579f71536e173c68367332c971bf20756. 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/ITR632200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb594375b42a6c269e9b4fdd9b3b7884b42627ae981a018eee560371e48a002. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ITR632300495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7722101fdade686140fc2ec56983f3c18b0e1dfe8a90e75b9b3dbb154bb4fd50. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ITR632500491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe226850a38249d83f14173e176245e38283ce46168adf9506f89d11f3cf1dad5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITR632500492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260a74ec8ca56dbedfba764ce07f08633db8ab70e457970a453e8e225ba8b93a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ITR632500493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb554a5fc8adae0294a46b91c58c25a7a1e63ecb4dc7fbafcb6101fa01c89234f. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/ITR632500494.