1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xbe1efeb13193c9fb7b40010b2f61e91d5e35c1aaff9a664e7979cf7bf6edd444. 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/713bd609-82d9-4d34-a916-209372b156ba.json and https://artists.proofprofile.net/proofs/artist/713bd609-82d9-4d34-a916-209372b156ba.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x5bc89395552e366132cf3f4afc2a8f040832591231849741c4c8dca3ee5b714d. 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/QZMEQ2516553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b51160f1e56d87c9ec7ea728d7664ad95cfca0ce712841d12069f8795601bb. 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/QZMEQ2516554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1898a5279d290cc8ad2bc6afae9a52bc8966ca9f166b55eff2ddb7de247126. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:11:38Z), 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/QZMEQ2516555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a367badfc4d44301656f7439b6233998d7438ff25aa9e02fda487ff7dc6e61. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZMEQ2516556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd07ba4817cd057a08b7b61ebb35d53add0ed49ab329e36f2bceb4d8e0b0765. 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/QZMEQ2516563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34a5030cc53b3362b012f62707b40460cf1727d41e0dd6bfc385774a9f60a9e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZMEQ2516564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e3032499d539cb4fa8f7b00d7488bb29aeeb8742d9fc31bf676b9951c00e5a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP42564115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8023a44a1766018ae45da7e8383b8064442c6867298a96e2d4fc2e4318c3e8c1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ7T2588380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34271125f2d7f4b4e187de70182e809c1ea6e3604f9e075d8709cd7bf7448ea. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:30Z), 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/QT3F62500369.