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 0xf83ae21de4d2787ff21657ecfb0f05cf1b6ff712bf597f4e451dde13bdd3e5fd. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e974ef6-006f-4acd-b682-945a834f1fdf.json and https://artists.proofprofile.net/proofs/artist/1e974ef6-006f-4acd-b682-945a834f1fdf.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 0x724d0ec0a5f652ba9393ad0a6a92221b1036d3179a1ddd9f920f2e3b8fefa1bb. 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/ZASVI2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d0ec0a5f652ba9393ad0a6a92221b1036d3179a1ddd9f920f2e3b8fefa1bb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZASVI2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605e44f415beee84512ceb0196ec3d8f726a24f912ef36232231e37461843568. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ZASVI2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924bf1ffc70c1ec4622e28a633fc37ee3dfe2a7aca637869d337837d9c085870. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZASVI2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2977f846b22a7d4d7fcfaa1d504e863b311bffe73364ffe1f0f1a238359ebdd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZASVI2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19fa1f9afecd7301760a17021ebab50e427b241bccc1a2b8d850204b15b3b1e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZASVI2300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edfba74a634df553e23f3fe1bbe6c7b5f1b2328cd71522861e1099be5ef4e50. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZASVI2300086.
Njengawe (feat. Kaymor, Ohp Sage, Njezz, 015 MusiQ and Van City MusiQ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4490dd48147350be9af8b57e678bdef4c1c09a80b406da698a2cfb92f591d632. 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/ZA82Y2200049.