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 0x0638992819328ac11826bd61455102a1837d09194a44b25d1504359fefe58961. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57f566e7-ac46-4eab-b619-258b1a77ebcf.json and https://artists.proofprofile.net/proofs/artist/57f566e7-ac46-4eab-b619-258b1a77ebcf.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 0xffff6cd6d92db2f7d8ac11e3eab38c5200d7e67ae682f6ebc4b9ce21026f5a5e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZDA71964682.
Selections from the Georgia Theatre (Live from the Georgia Theatre 1/14/20)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf0891938c64ca8973d9f14e65c7bbc0cc6379467b1c3a05952cd9007c0da81. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES62197645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5e4e10d7549a1bd39dfd5112f8b30d1c8f95ef53a21e0a621a040508492ea6. 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/QZES62197646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dd76ea82331d78106632cfa6c4be05347174243397863a5fa42c7b8f0676d9. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:05:22Z), 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/QZES62191731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecee04cebfcedde1aab7ffecef31f73f8cfa20107a11091eb482e5a4bf7efa2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:01:00Z), 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/QZNWV2316757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc353e74998cc2840298e47972e3b3bd93633b2ceca3914de15a4d6206e8da7b. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZHN72496968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f8ab2b758877aa5176c726ba080d326eb1d2ccfe566a793f70aa4c570d1f7d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFL2584852.