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 0x5379cab849f09e50160ba8a9481aad35338cc1803dd896ffa974978bc0569af9. 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/5ec9507f-514f-46ba-9d6b-30696fe96d55.json and https://artists.proofprofile.net/proofs/artist/5ec9507f-514f-46ba-9d6b-30696fe96d55.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 0xb2a6c4d01d54bf3ed89ba53c89e3ac1f4f804004293622e29e783d19f8ede1a6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA082419711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e265709711b1b008d75ed60177a5332002ccfb8688003f94c29b2cf1d08c607. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA082419712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd57f8daed1cdaa7e780174b2ce888b79b3a2e7b54562d44092f7904e3f91d6f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA082419713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a8513ca56c809f29fcf35a0fefb8573213db0d5c089fd8831da322eedbb8d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092470844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06723e65630bd72517484a6538bf7bdeca8ed4bdd4ab91475b7e01cac18cf706. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092470845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f4e6a36995b1020f2817c492ffab0a91f7b262936f4d3ad65448d454b3c505. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0L2415910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c14e0a36916cf5c1a6ddf49b486f9f6f1dd608c5b575d182f502bfa0a29588. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0L2415911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9f56ed77797fd005b05d1cf228fdf18df4d5fb1d5b5aa47ca9acc105e98484. 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/DGA0L2415912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543b8632252aeded43c4cbf0b7ea8306dc565ace22ea86e93b94b0f14e1c8548. 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/DGA0L2415913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ff48aa4bab026fe67f6d7871c7f0a03b1fc9cb51003700e29967dd1c0fcd7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2475995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b0ea67e516410954f524063eeff18740b1bf370fb79226839aa26b3b01c09b. 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/DGA0M2475996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e7b01056a76fed970479dd29230862836b6906eb225dcda356db4b7b296882. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2475997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce28d0ee613ddf3d196928b8def719834f91d230c315bbc45750b9fa3e016ca3. 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/DGA0M2475998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720a7ac2bc3e08708c3dfc796408ad3833ddfcd0df9de83fa9803d981b75c97e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2409466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8af02ed0da7429eb1ecef41e8acfb5587a8d03912cc8e6f140579f31c8252a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2409467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23553c183010ba36b8feb3cb30f6a86c127341f553b2eed4d8fa855bb83e944e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2409468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ce15874f2fe5b6b05245628545fc92976315e6e756c3277782b2b5e914d9e9. 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/DGA0M2409469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1f6b02e0b24bb57c2d1e8e3811e4362f25c9eff35fbd89504a8bfb40e30a4f. 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/FR2X42578038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3238f7dc663570bbf19c8109df0f57f304757ad43eff2d5d5bd3e0455a2d11. 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/FR2X42578039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47767b27ad010d10c996761b9ed0c91416a4418db630407efbc9794f24ce890. 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/FR2X42578040.