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 0xd5e9f28c2fdb720215c7ae9b40933d447e28d7e0dd5a0361c2b680f578e62bb0. 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/7e6935ee-6f6f-4e23-8744-82d32f5130bd.json and https://artists.proofprofile.net/proofs/artist/7e6935ee-6f6f-4e23-8744-82d32f5130bd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x25d8685c48715c07022de531aef36e0d2c16fa385f2d8b85c9154701dfcc8063. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USQ771500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcb36ea96106019f526200a0362592a4933b2998eab38ee1a4eb75037651745. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQ771500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdba1d30f3cd7ec6b1b21aefa6d20969c247d6e7b3eb8445641cd2a0c716f88. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQ771500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa491907eb3764434d4036ae5c69032886651d702e6260c9bcaf266cc0eb733c9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USQ771500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71673a2dfc5d9b23bc82bd1386f7db01ea2fad275160d88c6eb255c2965dff9e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USQ771500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71154b0dadb189d0f458eb08c9c10ceb925201279b33d82e065175165bb68d05. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USQ771500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bb1157224622c94685945086ee25a36a46ebb940a086c51e0357c293fd9d3b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USQ771500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea504079b1eb322256eebe8cd33e6aa53ca06a29a6ffe4c137deb031c7f5958. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQ771500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8437dc95d0a8e4552e69479ac659701bd1cafa1687db619d670da2164da701f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USQ771500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01fd437c78ce401523decf8cec91cade1720e2609b42620e89fd032df8a0b1a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQ771500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b664fa2e824fa8eccdbb2785211396203407282898663b9bb78051825ca27db. 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/USQ771500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4154ac209a300b453b2887ddba6083d53c6732072d45df49f349f19508ed562. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USQ771500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cb9a62d5ba9081db261ede35c757b783848a982a5cc47d0358198dbfa068b4. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USQ771500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce99d52837868197e04a553ab9bcbb6cb65305c6b288f871c6a6e3d233be4ea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USQ771500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abef29dfa4828b916042020558a7832885cdd1ded77ebf84447963ca64f2b26. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USQ771500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdc6e53bfc9e2a4b73ed7a5ee660f32a8a15d1df1e3cdd6d161ddab1fc2ea70. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USQ771500021.