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 0x269a2112a1dd0f1ae8f8f1fe961d4101e69f4fa30870ec57ef227c39e1d4b2ff. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfa079b9-191f-4ee0-8dd1-14f995e6291c.json and https://artists.proofprofile.net/proofs/artist/bfa079b9-191f-4ee0-8dd1-14f995e6291c.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 0xbf28da7d3737ae422d08e5c288261cb1237542c49e7ce4a3ec7dfecf5b2dd2b9. 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/PT6DV2000031.
Inner Child - Patrice Bäumel Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfb44e32bace2aefa00121caa3cd4c09c82a6ec8a9b56f681f29f26cf186009. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PT6DV2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4982f47ae48f6ab3dabedfe0a244087d2b28bdf3f9d6e5a9756c1550b89cec. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PT6DV2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c727f19d73467122e4a711934182948a9b15bb1dfd7f4a92c35ad7a880b883. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEEC33501331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b00bd06556868b12e0dc6aa702ad4a721431e88a59338c058d7d39fb188be70. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PT6DV1700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4982f47ae48f6ab3dabedfe0a244087d2b28bdf3f9d6e5a9756c1550b89cec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PT6DV2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dd6df536cbf7189d4c6b5cd4dc9fc40ee2d5b7c9e8ab0839c238d5b023e9a8. 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/PT6DV2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0817874b753ea6370bf5d322e2ca7f3a4d2a5bdf18bccb377fafa11a7f4b6998. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PT6DV2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcce2afb81a779ebaa3cab01134f005afe842571463a5a82f9125c9ba0730cf9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PT6DV2000005.