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 0xf9a7d2a85bd46e372d9c5c550c7a6bb3dd795089f3b174888571eebcc397c149. 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/8969d446-284e-4b1a-97cd-5dcbda6acdcc.json and https://artists.proofprofile.net/proofs/artist/8969d446-284e-4b1a-97cd-5dcbda6acdcc.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 0xb1c4ae0bfa76e2fb9ddbdd0b77119c810788f2b7d0bc29ccbd398c25e3374330. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARFPM0000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec83b3db059374f464eacb08b02d7e9b89420deb3c59e0b83f253bd9c1236f9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:05:28Z), 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/ARFPM0000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252da0ba4435a574d1e37053a9d12625f1fd0176dc8faaf7d903cb2a2d73fd5c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:33Z), 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/ARA770400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b3ed289d321381144608934c4ebd7628d7674669b667c705c5dea230523ca3. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:04Z), 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/ARFPM0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc2eac27232df2cdb0447920cebcf4e0a95fa5db654664d2892db9c5f81cb6b. 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/ARFPM1000003.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474ea19fe320f44613b970a3a8a30d8320013cce3e7aae4ca0bad978522d51f3. 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/ARC170700709.