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 0xad159a718d37682abf89f363be7525244d09fa459e8beff98e865d873057b349. 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/4d8a6d0b-01e9-4772-81fd-0c2c2afb7e7f.json and https://artists.proofprofile.net/proofs/artist/4d8a6d0b-01e9-4772-81fd-0c2c2afb7e7f.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 0x26f870ecac222d2ac1e04da4c68c92596faf663c2246fa94869e490bd5c471ca. 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/ESA092407265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d9ec6511e74a65970bc92a91295a96189bf93ef796561e36b19bc01f1f0feb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA092401345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a80b098999cf0e126a074bcb9d787c5a7625f59fd083ed36c005cc37b030d5. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ESA092437694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ac337d3a338dee027f058c3802b1c86a1e1d0be5847b60fb79507ae834ea93. 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/ESA092333737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bfadc79a058dddfd5fa140f836a2566573509aebd7ba062ec7071acf496713. 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/ESA092320211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c151aad1d257ccc117da3fc52ef25a0984cfad9e62e7add5b7ed1a280b3de64. 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/ESA092320217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74492590c2f7e650b72aef121a42c2b8c68e10ff3ec893569c18db77c1953d4. 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/ESA092320215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda561c6f2650564270e4b9e29f7141ab03391862bdbdf880f0552a9796c5b66. 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/ESA092320188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd723fedda34d8bc69eb76c24ba9ed59b2b637e22e8328b763d5c7ff5ea5e15bb. 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/ESA092320289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339d3a693cb43bca7b1b6d7c1f631897468bd15e6a6490667d6c08d1f88a4565. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA092320265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39522f4c88d3d0c79a2f5712e1bade2e59ba39ce2993c0cc14362822b2c58a3. 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/ESA092319510.