1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x808a7edb616b7daa916dd6c719e2a8235ae2d38ac9689760ef5595d9683d8918. 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/bd648ba9-1e44-45bb-927d-d225c8f4483d.json and https://artists.proofprofile.net/proofs/artist/bd648ba9-1e44-45bb-927d-d225c8f4483d.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 → block OTSBitcoinBlock must exist at that height 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 0xb334e490b7a67c21c38dd974dcabe10a750156ee6676779660ce9b1ff0e62eee. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:34:00Z), 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/QZHN61919271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df2ab03880434e42c2c4591ff470745c7ced735c004b88090931a8c94605a25. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:17Z), 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/QZFYW2005735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30c10116b927996bc679a735bf98e6034f46711c7d5d01e541ea1913e3219bc. 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/QZMEM2013381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b27a73cbd7bed627b7d9582ccc6a230504c2eeae05417b4eb72eaac2681f56. 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/QZK6P2188492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8975080f7770cf0997c82f1f31b31b75ac35d19ab3a7abe87f2b92ad0ff73d. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/QZK6P2188493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219049cb21c2678ab0633b0e02df327fdcebeec425b65b3b3555d267f8789e25. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZK6P2188494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2856c4503a1f3377a935aa780efc28a81c1b02e034ece449de6923e5eaf549. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:54:15Z), 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/SE5BU2495378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eade150d7fe1da518bbf78bd8d7343fb9762c8359d3b25f035ced54a0df12d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/SE6XW2565759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf696c09b7ac224d1717e682fb9cd1f78e768e592f2df53cf5f43ebf72bd2c3df. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SE6XW2537782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a70f1d1e00101359bc7c4aaed27ea7728da738511c385127301817590b8177. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:36:56Z), 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/SE6XW2565760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ef7e375736a0294b611024b961b14ac780706d6c1efd9aa6a98f10dbaef664. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:29:42Z), 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/SE6XW2565761.