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 0xc19147aa6dcec9841cec91e33951a17dbc54ff156260a5eadf31626ca4411424. 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/94df8d41-c346-4932-ac39-98e529684f36.json and https://artists.proofprofile.net/proofs/artist/94df8d41-c346-4932-ac39-98e529684f36.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 0x797fc76073a7be5dd5454e6fb63ecd8d7139c1de8c82608cc84917bf52ef85be. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZK6G2171630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefed80c1d58ac93d565ef71bb010e2670d6965afb0fca9a473a01235e19c385. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:13Z), 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/GX53U2026240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019a1e45639fc491af2cf3a9f2ca6de17bca5da0f77952502d97821ff4102236. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:33:15Z), 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/QZHN52213148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e8daa5e5b2a2c8dad20e7770e9d193c673bf91304acce5c0b78786b3ac6218. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZES72370749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e48b78e40f7bdf8adfccc98e86ee8f1f481f69d372af0f3383ee3435c8faf6. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/DGA092362697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5137d8de3293ff3e7121503aa8d5846c790df2aac929f10b0177df1cc6ed29cd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTB22434468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f24b2fc9bdb7d2f057579eafb0dd4672724ee45d9eabcab506630446df83b19. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZTBE2417854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57c0df344435b8f07d9f69cf35c3b986a85d7d6dd9047c2353fc1111b4d9fe2. 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/QT2VB2458849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9e6a97e3f78f1896cece992edddaf693a53452d367e76870928b4a25fc243a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:15Z), 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/QT2VB2458850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdf19a643c04a6a7da95d4ac9accc0d5222790d4034f838838458d7f7c9301c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GXD7G2526142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00827b19066a454b48fc1a173ffcc0f83c02b51a6775fc8f3ad0c76771013acf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXD7G2558340.