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 0x0a1aa0b052d91c656ffbee289b9da232157bf21f519a4d5f8b09fc3a9d34ee00. 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/79ddcb5d-9cb9-4807-9cdc-8bee030e7f9a.json and https://artists.proofprofile.net/proofs/artist/79ddcb5d-9cb9-4807-9cdc-8bee030e7f9a.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 0x8fd47ea31e2889298ecad54f4fd307bbdbeff4220f6843b67a49bbb29407bcf3. 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/QZTPX2388443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa651c82657d4235be68eb37c53e36376ee902db5aac3722e971170181f0a4891. 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/ARYQE2495356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a1017d0203cc829b433673facddff0ae1450aeeac64e472f2600100d24e103. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJV2370481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1584fa7152e3e6da67ca1161964ca434b87d0ed6b06984dd97705162f0452ee7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2370482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0947af81c64060880faf26dbe9b6621027a5172676206ac1d5c8eafd8b7bc13. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJV2370483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ee683afeab986e317527a5d5f9434e19c2cf5454c5aa00fa95e6a65c8fdb08. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2370484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d4825721e51498d2229b291bd22055a0a710d2997799b001d592be91fb67b5. 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/QZNJV2370485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f71afb87670e0e8630b9ef97d1af5d08d3340ae777ca51c85f57130259bc7b7. 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/QZNJV2370486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5f44c0bf9214223596fe9d109145b0cc49b48e3302d1a668a9e55c5c265920. 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/QZNJV2370487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38d8128ddb606a73cc9f9550ddd9e6577dde5f4057f7b44ba2a52b9eb489bd9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2370488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624c09502d806dba2afb9105e8131821c992a4a0dce5f2bba6ef96c1a4af50eb. 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/QZNJV2370489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896b6c25198b6560ac77bf7d2224e4895a0febcb2daab223e8c1b3457f7a443f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2370490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6416d2e02d941c071795d5dbc5ff6a0578ffabb2a52bd5f671bb4f2a6cce5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2388920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf117eefec855e7282e3bd72b1762e34ac9171a6dfa513e80e595d2ed54e0ac64. 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/QZTVM2346757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fcb195c74ab357c88c4d2d11854f48befe3a742a763a0fa644012a658705e0. 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/QZNJW2363365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa6ce1f00655b0200dc6ad0e0db671a172391965e6e424bcdf673e4cba836e3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGLM2348656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324135bb82b625eb809da485d7d5e33472d399762f22912c5aa828a8f2954647. 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/QZ5AB2351782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f98a1f72b3e913594d52911f270160ac9a0e6bb0f11df397781d2f5306415f. 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/US7VG2351257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a995e457676691c46873d589f9c8f0b0f65c803a23e5d505bea84443bb45e2. 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/QZNJV2444583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b2b7b670671d47934a1ced55a2a8cc49ffe6dbb009abaa3ca3e1c60348dab4. 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/QZMZ92415503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c95925d05feaa62ae2630690a46f4beb35fc72b89b923137e46a4c99c6a540. 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/QZGLS2421276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421549bf34572755569fe313ac5e447f9dec1efb862f8920c20be13c717fbcd7. 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/QZGLM2405933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9ecfbf51c7598c93979a79c7be9a2b3a0fa15de91edfde4be91dcd5f7e7ebf. 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/QZW9L2357376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00f1cc2f41109be0f810946db2365a5003da055eb09cff444456a1602fa4119. 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/QZW9L2351304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834f404957732fbbafb6fe1e77582b3e3012304e768f2a6fbdd1bf8b402f147b. 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/QZTVM2375700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e2612b40952ddbd85dc553309ac4dffcd39f5f32e8914f258a1a791ac5eddf. 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/QZTVM2316309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81318f8f7646e6396a058e8d8b85330bdb166a69a295b0011be76022bb80cf6c. 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/QZNJZ2385924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bc2a9aeadbb1c5ac91b2f27e30c0a30d9fa01807300a85c6f594ab92d68bd8. 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/QZNJZ2375399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1553023b36280ef6d7ee833635a733037f14ddb489abe34f4ff5dcf222f03c. 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/QZNJZ2362939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dba0ca0d782869dfa64e40219673b80e7d4c00c0c45ce54581e794ea8e9effa. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJV2335241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9fc5a6e7bf10a90e7ad3d7e810596b509ea43f49d6b02cca0f50da76985cc7. 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/QZGLM2355262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41303e14902da511c9d2befcf2dcbdb35ab093c5d7275f22649758a22abbb492. 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/QZGLM2355263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9208d8d5b0bcb4239000f399f74a041d382ab421b39f344622c7442664a4d889. 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/QZGLM2355264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc74b97df6c31a17286ec64f63d339dccffd7f338eae0989d91175e7f479b8a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAU2288053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d80f9ea3f53ab0babc21a0a80a89a527e0a11d8faf74fa36d9bce879a4277f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWV2249132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ba60bdd6b18dbc20563f4ad498d5333fd635b82eaf684d5d46e1f69ee2349c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB52281614.