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 0x4dd654f9ff044695fdbebcc308b9ff7108821942891702fb8be55882ac705c8b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2786677-457c-48aa-9872-56b588c772bd.json and https://artists.proofprofile.net/proofs/artist/b2786677-457c-48aa-9872-56b588c772bd.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 0x461e132d0a96c730913a8b53de4d2d96f87ab3624b378672db286f5a67506915. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:57Z), 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/SE6TI2078148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474d87533fa9b225508745d5c7dc7c37fc6c3c1efb09eb2915f8527ab2f970d0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SE6TI2078149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9f80f7879c6394f7ef3b44bf7c06547ae9b91b5f932c1a2d75188886f3da8a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:59:53Z), 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/SE6TI2078150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe378a4b7ea04e2301c372dea4e433992e539d9e355cc42a97720bd9115a6a397. 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/SE6TI2078154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cc285fdb131e9418d9f78336a95b0f81ddecbdf284028a239719fce67b4dde. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/SE5BU2112137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe330d4e06ca05f048955f6e25a0f8f159f958b43d4bec5f57af062f55f16f009. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/SE5BU2112138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778e766165068638e86a42a40cadf3c54fd568b1f5243baf76a920261b926d14. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:40Z), 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/SE5BU2112140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca952e314d9a760f95e6a4aff39c0ec1c428265cd53bd0b3bd9f2037382b6ed. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/SE5BU2112141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669dcfa667354fd9c47a440043571dcc9ba6a5a1c681142d2678193c328411c4. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/SE5BU2112142.