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 0x9123bd6cae56ab252b311e5da718423664118ccdf494878470065b622e542e30. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06840043-0860-4222-8450-c2f84a8dda7c.json and https://artists.proofprofile.net/proofs/artist/06840043-0860-4222-8450-c2f84a8dda7c.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 0x188ebd1de239ebbb6ef1cae52a1c9e5f8488908e991a37e3c85e9c0763ff3183. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQ022005736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c461c42f922172217cc3621be89627294e30c2136d3e1783b5010caca58e13. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQ022011817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc2f334e70a11f0955ae28965250ce7091bbe1eb93d27fb483186a8a16738df. 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/DEQ022011820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf37d7bd08cb16c60c6eefb1073b33b40a7511a8f1aab22dd9db0bc7f6afddd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ022011823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c582d1ad8a6dbaf4032bfd37dbaaa59ff968a902a844df42c2e9623bb5da05. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ022011824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441bc31555f60000683f4970ca71b5e59ed1bcc455829b8eabdb3dbe011be9d4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ022011826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8ef902daa4e1e3b1c1860522a895b25c3323aa514a423b1c8fe998af727632. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQ022011827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f1d34cc555c0da3fb41756101acaa6f1158148b1d900deab721718d6b4bfde. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ022011828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f68b4847651a366e0f9d04536150fff613cd45fa76b192df8faf12c1888707. 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/DEQ022011831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ee625ecffb329ec9a40634fe85b74c610d78ad5b9bb891682db194ba8108d7. 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/DEQ022011832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35e35b91c5026ee46700444e4dd3467f55533bc9f18af4716cca03afa057f4d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEQ022011833.