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 0x50832aff47f39a4bd8ae29fc4bdb860ed4635b8ab4c663c94352b72648db9ace. 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/d2815da0-69c3-4ea7-9813-76e5dba7146a.json and https://artists.proofprofile.net/proofs/artist/d2815da0-69c3-4ea7-9813-76e5dba7146a.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 0x3d5c779a31af0c7e5d8e7c44296bec2c2b8525bf4af69b19412862c6e06c68bd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GB5PW1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999e3a49c20deb9a8fb4b0e585bf574d251fd12e16a1bba7ac7cf8a77f95804c. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/GB5PW2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d5740dd3b236de3ae19b477d658f5cd25c2b7796a7721ad26ed86c3192ad28. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB5PW2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0e90e6b400b5679f68de13dfda360d4118da67562dd800fa83261683aa236f. 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/GB5PW2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5342d9863ad981e2ca4b85edca5afeef555baf052b709f9c1c9d97821a5f1a43. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GB5PW2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf24754d23ef7e066aff29f6d52025174cceca0f839a515edd38117a058f32a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GB5PW2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a7ec9560241b5261beab450e03b394d977ee6da533227f1f09c7a4bfd4ef93. 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/GB5PW2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2bb0fb22e0b557d8b4a94e35cfc536ec5c38b41d27ed6a42f8c3cf900e33d2. 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/GB5PW2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850ab07109a6193607301eccc4f61e724f5438e28f1d489dd3cfbc271aa5beb3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB5PW2000018.