1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x05f71c50622c324a05b0288fda3fb862bc72a5594ac7ab55f0bac095516f3160. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50391f14-862b-438e-a11d-c873bcd7b3dd.json and https://artists.proofprofile.net/proofs/artist/50391f14-862b-438e-a11d-c873bcd7b3dd.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 → block OTSBitcoinBlock must exist at that height 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 0x1c56865fa4ff67e89c696bb495205fe44823adf2e073e400adf524afac3af5fb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDY41938624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0505529705eda60a3115d7832674962756ff4d83464fd90e219092cde9118738. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q1977669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77b752a8309b294526a239ebf7ee0e64bec58edde50de9c870aad12b2f84cf1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USL4R2092238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc33c0ba728d1d0a135c6377dd03ce859ace4dc08c81836a6928b43463795be5. 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/USL4Q2167277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d55af6ea5a7d1751c745fd5d22660274ff0f9610f3490a89ad938199be42b26. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM92267459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf772e90fc6c4cd817b1a91ee0e35e5d58fec77663e9f3e3220b553b415066509. 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/USHM82357512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabf635a804a486b6631959a70a8bcdb97fe8de4ea637b64c2a848e18f885276. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM22494855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fb1fe199a9219b022248bc281d7ec5a74103c16b9e580bdfde64ce8b9953a4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:20Z), 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/USL4Q2432150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a4fa10d65913b8b94634c8361cd46177c8780812acc5ad6be310305d8dede4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0P2320894.