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 0x642e2dc6c7d9a9dfaf91c8a0c0db6689783eff82b8a8a80581928d11d720ff0b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14ffa8d1-e839-4394-9e4f-ba0726bbc492.json and https://artists.proofprofile.net/proofs/artist/14ffa8d1-e839-4394-9e4f-ba0726bbc492.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 0xd32f3475a5c2b980fde38cbf421c3c172f470e0294b1822f53a8b868e1f07a86. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:35:55Z), 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/KRC392100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87115905a1cb37c938b154d895e8e0c494c810edd85fd91b9de1e01a6401ed4c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRC392100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc703f439848f788dfd7afba8a71854f425a3e1c7c17b95e8354036b3becdb20b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRC392100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf761c2d25e42484f0ce9a4a68428e73490bba4f6ede95f98de467a57d2403a75. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/KRC392100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d0980da34fb6c7e29d1f8d3c34204b1a2dfc06d8eb08da908b1f168a2da520. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRMIM2335488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c18e86c73781fdc34e038148c0baedfb53073686923a13e4719052a23fbb2de. 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/KRMIM2335487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9ca15c37a35b35aee7a651acb5632aed286a1e0f2f71dd006b088ba038744f. 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/KRMIM2333084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8def9e75c3893470da77139cfeaf1d76261e40a81aaf411629212008e0cd0714. 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/KRMIM2350939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d0980da34fb6c7e29d1f8d3c34204b1a2dfc06d8eb08da908b1f168a2da520. 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/KRMIM2335488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ce87b750babde3f8c5214850b926eb893847dc53a7aacf6d6f4ce1229e7c0f. 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/KRMIM2350940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c0054a111b59de0eb366448011836880a5b972f1b16e4c952c0ad90c3d870a. 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/KRMIM2350941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd37b799520132b2f263a02f2288a1eca5215bdf354350bd2778dec0dd6e772. 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/KRMIM2350943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1036b25414222afbbdc5fef41c801aee9e6305f8d51432b9502e7e12cbb658. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/KRMIM2350944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6334bc45f76a543f96e8fd5484641756392ebdb8bf653f7e712043e96c1daa9. 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/KRMIM2350945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3389d392344d2d2bd945f3c06ac07df480cbd2f15bc3dcbe5e1edfe5151a42d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA382006255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404dba9ce165fe279ebfc83bd469b5f5974b661b3c1b15f60f6c084b9e866298. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRMIM2100826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a38371bae21a7f3ea1ea72832dca9ccfff407b3a4715c7b783b6fce8794528f. 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/KSA002402330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce61184e0715f8b8130a5a556cff4e1d1f2301959febaada80cf7744ec4361e. 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/KRC392000079.