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 0x981eb25d274b75e74b889d6421a3d274cbd80f822285e8c5fd959b1a73c3dae3. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c7a0f09-1bcf-4ee8-ad64-a5b705109128.json and https://artists.proofprofile.net/proofs/artist/7c7a0f09-1bcf-4ee8-ad64-a5b705109128.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 0x212004e872ea8fa9eaf0586bd3c9067dd4611dc31f9e697e1f4376238a1947df. 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/FIPHW2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855a52891aa767102467a406cff306c91bba9d021f658e61c9a14ad903b078e4. 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/FIPHW2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121aeaf8188ff68e75f341f95c851f992842ceb9a005e0631eef5dd742f50e1c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FIPHW2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c665b3cb47242f557631deae885a123f94e79c57cf1ec76433490a2131a7a6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FIPHW2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe00447c3efaeda8463b3e8620fca827f65245bfd1d5234ee5ab812c72f7b8e7. 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/FIPHW2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0025e7d5313b3d736a3d8c0bdc8224a86244f7526f462539e8b2e00aee57419. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FIPHW2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8b17012d2aa9c01d325b10e2b6bf5c2bcdbe6d5680dce6ec284745574619a5. 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/FIPHW2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077386e1c9978f247ca4cdb7bca0697ff0cf46062a202b6e340883506bcaff29. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FIPHW2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6363433b6ecee96720e79288746686a9d0d95607bebbd8d7fd2b4cfda1531143. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIPHW2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25040a18f12a216b902f2a68dfdba4cc5a5242624f04cc5b88db7d0312d3e445. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FIPHW2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474beea8155203b035fb54e79e204f8a17510f31f4c98e88f452df74a3d8049a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIPHW2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9d3f3f738815348b96fa6be6a9b156b6f93ea76bae85e567e546748cc27ae9. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/FIPHW2300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629f3b22f780d417efe8299f1cfa9ee27b803b1feb727ec94466b0321a3a8edd. 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/FIPHW2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3416a717e28a74f01d5791215fefedf72507f6441b4ee2b72c7af9bb367ff568. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FIPHW2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d6a88aa53dd8d0498dc8764def038d9702ac556638a49b3a96bab8e739bcb4. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FIPHW2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11229ebd9b6ae4964cda473e840eafa22b3817ce606090e0bed3b68f956a3c5c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIPHW2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5952405a2fc456c6e309ddab534270a637f25b22b59134b48c5fec29fc5a86f3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FIPHW2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef9d7ba4941ac6ca55329c5a5d9eb9889e16da388925775d1ae13076bf475d7. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/FIPHW2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8582db013c5fe88d3324d859cb5b1aaedc9e396d1c33e8ac63c009ef96d34234. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIPHW2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5e5cf3c0696e82487553673eb375609b3c8254e33abc85bb2092c81433325b. 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/FIPHW2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b152e4f48816e2694c650071b338e3b62e43b81d26c23ed27cbb16029fa5cac. 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/FIPHW2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd67d914219571238e719a0ef88ea920d1d5d7a3461ef894e315b3672507edfb. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FIPHW2100038.