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 0xae6ee9912060fbd45686b8ad2971838d2c79082512b74245cea2dbe1310ab501. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df0e02b8-de34-4562-bdb1-c25370eed9db.json and https://artists.proofprofile.net/proofs/artist/df0e02b8-de34-4562-bdb1-c25370eed9db.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 0x719d7c903b6091becdeebce682d7c817b92482a3fc31b7eefb51b072b675479b. 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/SE6XY2183314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588566454957dfa7e430dc4e392c7853f2f370341ec1e5457715ae59d92628d4. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SE62M2111345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92509e027ae047ca0dbf8e301024055eabcf577bdc883a836a442852f7561a76. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:28Z), 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/SE62M2195586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3f7950041994fe737a1c6cb45fb4888051447a00a62f7186598c77440332d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2201485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699a81ad177b9243e20ab2a3fd339739be8e5496d2702de085ca80c248f5101f. 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/NL3JA2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ba42d921557b0e16e47fdad86acfe5b40c57ddcc81741563ad8092f1289cf3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NL3JA2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fae35fc95b53df0ce052ffcf605c3a8fb6ca3ab55bfe58aa729c7976c49705. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:26Z), 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/QMANG2234326.