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 0xcd5e5fa70d152b69788716de2221d2dd29a86ddd3afa0070cc5c09540321c33d. 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/9bb256da-130a-4418-806c-768fd1908838.json and https://artists.proofprofile.net/proofs/artist/9bb256da-130a-4418-806c-768fd1908838.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 0xbe55607380b741d31a19eaa07684030b706732bcc15bab43215860bc6f85eee9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:28:11Z), 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/TR2060700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915bc932a7d01d998f247eba4c410556747a42c732947119d5d31d23520fa64d. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/TR0361200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa751c716603668e8ee92634b3fb90418ae84d92df60fff9064faa0d6f2e3d3c7. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:46:51Z), 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/TR0361200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8957f0c92fd7c6140c159d452627e3e456d9ed690081136786ac937c6959c6b. 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/TR0361200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae99bdc6fb933165a678659d43e8d2d9f788ee173bf31208c4eeb10cc53eac. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TR0361200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d10c5cfa2962f4d80a75dc240d3c3aa51a4bd075245b2b9be0b5a2c74ec8d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:11:43Z), 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/TR9272000454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dae23e6d199db7fedf6294d25f2d149a81b824316a3cc8a1192bbeca8b33c5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TR9272000511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a06e31675bbaa97c3883735e1553c9e0190dc0988a0aa49d2d1288f73ef2e68. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TR9272000550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf515740ae8cc9b224cd9e46051d81aed9df9054e341cdb5abb6a6ed9725a58d3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:18:12Z), 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/TR9272100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa143a1011f20f2b141f69ae41d950c2267278bf76fbeb67ed1de4c2c785f23ac. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TR9272200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e78adf2e15b9331e4c3aa59cbdb33ce78edc45621f254ea723e64c47639933d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAHR2321135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8863302946e3911799de5f58953419981f83e57731eabad9f218ce2cac1f71ab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TR9272400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80601c294461ea98b972cd6930ac3487f612cd0e12b1ed9ae9d9223832960b34. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:28Z), 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/TR2832500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f486d299d2fdddfb34a79772f83b30c23f4aa637fbc95b0d7acc0ad11fe3e6. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TR2832500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10700cfdb72199dd424f8cd2f3e3afd84e33bd2b90f5369fe604f5abc4adbe4c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TR2832500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec1546febe7cf8bb18751462575d2fcceb27a4a575beeeb31bcb47ec02a828e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:19Z), 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/TR2832500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb920d73ab20c48ca003c72c3b964994540629929ba848f5c8cf22b52cfeedfe2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TR2832500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fab8672c74953d944ae21347f29b2d57ebc01aa323f90c34490a5e7500611f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TR2832500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce211617108983f51932712fa30ec9c5db942bed8a1608123564be7a19a54f99. 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/TR0361900040.