1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xda3021db6b978bf1d9e0e14930e2718e22c8a3e80a51e72c88e780088ace8688. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5041bee0-8b85-4440-bf87-796da85aa349.json and https://artists.proofprofile.net/proofs/artist/5041bee0-8b85-4440-bf87-796da85aa349.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 → block OTSBitcoinBlock must exist at that height 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 0x4c29af8d90d0bb5e9e93283a661cf734fb0a4bfd0d3c623f594422d3968e833f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBMA22512817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f7b2283b9edba662b66912d4399be49137578eebfbc2ca16844dafe9792011. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/GX53U2549954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246d9913510c27092eab5b77ec71544bd2178e261b1935450e5ba5584a5ca9be. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GX53U2566777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748ac739480482a5d1276b4fcd1be35cc71b6f350fcdaa225bf03a88098b89a8. 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/GX53U2566764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ea5415e619d8cb0dcc420e0cc7dc424e24ab44577d81702cce97e5892511c4. 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/GX53U2582689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba8db68eae9fde8ac6d0d3d966e626f51d157f3abba50baa653d35fbc3e8fa8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX53U2598231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7050cec5756b89c08b6fc958f9f594e9583b409d58c2afa4b6cb179215ff4e. 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/GX53U2598235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf038714ab77d33b6e32c397f08c3af49f9f65f49692dda1a1c10ffb5dacd4ebb. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GXH2J2577762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68353c3579c7e19a397bd50e8322008572abb18ceb98756d3fda4bf9aba91a03. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GXH2J2577892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00988e851ad3a6af33494c8727d936960194592989dfa5d4cbdc3a7de744ba56. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXHAF2508557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440f8059c605684e539c94afc287f10b4572ebc7c6075f93e4b63ce36e13920a. 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/GXHAF2522579.