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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b5681ddfaf126c9db161122dda09671c80bc7cabbdcd015a3d4423850bedec. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c7ee34f-6603-4bd8-aff3-ab479319011d.json and https://artists.proofprofile.net/proofs/artist/4c7ee34f-6603-4bd8-aff3-ab479319011d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e02d487cfbe3fedb0261007a9676f0831f88da1c2a8f54486b0d28138e03556. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/NLCK42223409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3832d0d1128a636d03b4d33b44b4e42530c6271fcf5b1c43f42ff712e37c1cb. 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/GBKQU2343288.
Zion Gates (Original & Tim Reaper remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c89936f1077e35ff883df8dc226c13f18ae99f186ed961d9ea0e895cffd4f81. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FISB72300007.
Helsinki To London Connection - Cheetah & Janaway Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6aedf016c62f5249e5b2edf1ccaa32837a23e0f156d868665aafd8168b4b7c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/UKN6K2400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb364eeda70de522d2a337672aad924f2831b5d566d7bfa6a782e5c659a505. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FISB72300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce8d1920bdae6b2a0095ec3d4638f8590df6485427e59cf7847226f97328ccd. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UKN6K2401746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb2ca4db811d8e11056c15d5398dac5b2313ce66f982fcd4108493545c6d2dc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ITGQZ2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf31be6c9824f3db1389e2965094a86cf30b4ac6d9cdd2845896257613b89a72. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ITGQZ2400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc613431d1cb58430a07fbc79f85b0fb8708377477d46980438cb99aa290955. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UKN6K2403096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324c1401b1f8443666f90c91898801a87b3e99366ca11eefb587e96aa7b49970. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/UKN6K2403097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e176226bc493087d5bb79030948b9db16363b45b3a49ec3db7d6e3a11561cff. 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/UKN6K2200828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4a41ffaa579a852f689f65a1ad3b82c1ca10b1390220742ddf97a4fd00f63f. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/UKN6K2202267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9da291c8b086a447bcaf01472de4f048cd55b7c85358438098a29ab56e423d5. 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/QZPEW2434274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90176fcdd973dc8e568a9720bb85610789dd5babf8c93cb95052a293caa2eab5. 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/NLCK42238744.