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 0x2719131650ce3828c7f5861fff511817b391eec4116287fae56678b652e72be8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dab2b79a-6b64-4eec-8ba2-d17405e51073.json and https://artists.proofprofile.net/proofs/artist/dab2b79a-6b64-4eec-8ba2-d17405e51073.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 0x79684930cf4645f960be9e8b9c562fbd804bb6ab638bf961f72a703d7ae08c75. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DESG40800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bd3fe11c3593059e6f1a06014181aea0dfd04df0a7e36c3133162400232489. 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/DESG40800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd512b50150fe13d42cc72317e74da7fe66824dff5815251bfb07e6931c749c1e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DESG40800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa59061d4af1eeab67f350aa566e40de3f6e3968658b0cbab6f09803f49fa15. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DESG40800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9139421a57f69f3352b0139a0884b2fdb8bfac6a3701d23e13873edd2bf6b372. Chain 2 (Bitcoin): anchored in block 957692 (2026-07-12T10:37:51Z), 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/DESG40800119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b4624fe8dc14659a43b615670697b6b3a9d5a62c45b4ea6749965ac6adddfb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DESG40800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5ec2f8fffe057791d01a1855836acf402d88fde10e83213218a6a93738bd6f. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/DESG40800121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0050b196fed6ca07a17c50168ae8b6a49982dd0ea5ad4ad48d0823718bead0f8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DESG40800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5a232cb5ad414903eac20172557c6de79666849221b06ad442de0746728abf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:17Z), 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/DESG40800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f6fa607085ce8f6361f27fde881d6cd10e79b24135fd2ce89890506ef5a84b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DESG40800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22a6af01784175293c025a7e896303b80470f5c7d87858845daff128cea348f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE3MR1400135.