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 0x2c0c587eab631fc069f1736045af28f494cc7d9c962a89f1e004b691bca039b4. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5ddd67e-bcf0-4d79-aa59-5446e5b39707.json and https://artists.proofprofile.net/proofs/artist/f5ddd67e-bcf0-4d79-aa59-5446e5b39707.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pachelbels Canon: The Ultimate in Relaxation
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 0x9d5cf07b7e6045e76a1490886d08ec5f0d5aeba2028342b113632a9f10412c1b. 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/CASD10610084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084231bb47fe3469b5204aa6b689764995912690c741361e02f0a019de19306e. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:38:54Z), 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/CASD10610085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea347c98c4d9f5bfa1608c44024569f3efdf2cfe7ce433454a4813d9a9e3f3d4. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/CASD10610087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa040649144498ea20480eabeaaaa57eee85b6f1db63ce8e9f747826e22f8277b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/CASD10610088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb810f45b39877dec50309bba8c4df30a5f0feebe7daaeba1ee1d4e8a775b0c25. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:04:33Z), 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/CASD10610089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ab39925d1405a0a77b4ecec614c45a2d81ea796b6e976fe974a65f56322b4a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CASD10608267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9bfc92970b99cac97f656c2e9236682c51514727c0dce850e0e5cd59694f7f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:26:38Z), 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/CASD10601556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc54ff16b5cd60a5a3821c13f58a647324369deaeb2b2edb52ed701380adea4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CASD10601559.