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 0xe48652a9f71b12587247c3c706baa609bfc865905826ef09d5e0d89627f568a6. 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/7c5c8ead-30f5-4953-bb84-ecb080697df1.json and https://artists.proofprofile.net/proofs/artist/7c5c8ead-30f5-4953-bb84-ecb080697df1.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 0xa2d32ab4c7ddbd37c42141a88d1472e73cbd11f921af1520c9f714e398528c1b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:49:32Z), 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/SE5751882495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa03ad05f85a983ce34b2fe0571dd09d4d7ca1716b4958326ea52f2e6c6dfb2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE5BU2037289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadea0238ba03d0636e097b01f6edcb0065566b5ab51e323ec8ab8142b2d19fea. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE5752206265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f69a89e6089fb1a692aaf87e2ab062794a696275acebbaac1a44229c7cef93. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE6HN2214956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ac6275cf8193163973080d4829e544372736a27c2d659c3d636e00eb356e07. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:11:40Z), 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/SE6QE2251281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3ce1ef2094a277474772ac9e8ed7f1b9b83644fac41bf57a548981c0aced4a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:44Z), 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/SE6XX2293155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdda02446be6929fc787bfc2a14585c8280c1fb83564c6cde317ffe470aab516. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/SE5752458145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa868443af3ef2f53e2a2b04bc7d7e1577505b7c2157ea5a775659ca8a278f509. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/SE6QE2451648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9691ff47c2a26be91b0a08ab623d46d02a70c97281b791fe0afc47aa20fb0644. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SE6SA2429051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd362d64585d942c5f56a7a950a751e2f304e2f8371dbe8039828885bcdc3bba7. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/SE6SA2429052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e27419ee56812bfa97516a35bf277daca5c5e1ea9ca5690476c13ac50d801e. 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/SE6XY2594383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581ee0c33f7114b1fb468db6cea706bc97bf4e21004b6a86acd1a50bcdc0e441. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:01:32Z), 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/SE6XX2560495.