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 0x0924b58aafc33777f084638bdbf0525f93f6e282870ab80f127d35db3d6ab4e5. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0404746-265c-4471-a1a2-c76864020ca0.json and https://artists.proofprofile.net/proofs/artist/b0404746-265c-4471-a1a2-c76864020ca0.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 0x599f15d54be308a7993a42abcd00860c53e13f1807643a01681a3a30d7e44827. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZAKB2381431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8f8182f2dbdbfbb108a7ede968ad5f0b0ea52c85d25f111754971171481d8e. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZAKB2520644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37adf6b2b01bce87f4b93c739638abadc284cbbe9b321751e875330b40d2cdc6. 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/QZAKB2520648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8174cc373b3511077acdb6a763c63d50bae59d511e883e0fc75d945f2927eda. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:13Z), 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/QZAKB2520649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11ccebc9d0c09eb8269b5b0601a9f1dc19aa290f8c29fdfac6f4fd61631bb34. 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/QZAKB2520650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622f44118b3111e29898c0956a9c3d0794f407878cdcc9f8b7240521fa1aa9ca. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZAKB2520652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5ef904b75faefb697dcab2d95f13588eaa39daa1a68edaffd031a1183acd82. 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/QZAKB2520654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f300c172ec84f0c91ae3edc99f5a77dc39736dfaa5bc0e4168cf863c205c6d4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZAKB2531259.