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 0xa22430f2d062c65466d646fbda215b20ebbf382d9037654d092351f51894b6e4. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cdeb485-0d1b-470f-88c3-37349c157027.json and https://artists.proofprofile.net/proofs/artist/5cdeb485-0d1b-470f-88c3-37349c157027.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 0xa1b61254fd9964f8a5cbf8c35ae5272a3eea75b079f6eda6456db4c931bbeb73. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:16:17Z), 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/AEA141001915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f00a22c58e205930ddfaa6d99ea239de505a8f4f75826eed406602829db2b4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/EGA251919818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf430ae3627ca5ba5bcf3a0e1ffa43b70215193f4161e3994e3e8ced0d72f7326. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/EGA251714764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6024a998fa7bca9b47777dfa6e4bf8bfab52152d6691bfda9339ef2669c7c5. 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/EGA251706808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56bca4c70ab4d9484390651032dd65835382a5f90cb4947f548fe85547c5c7f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/LBA131700441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59733ea7c196fe2055f068ee1805cbc28b3dc5f814d65abd71d06f447b1a433b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:08:44Z), 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/IQA012005324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284b6719aae727759b7abe7974697ee496f71afcb524b03331971e20269869de. 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/IQA012101147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99491dd61938f4edca3ce8e16adb16df23ea65d6d5747da7a54b61e485eadee. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IQA012200870.