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 0xf508cd98d7c7a4fcb28dfedcb31b8cecef79cd1116988dc93809918c5936b809. 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/341b14f5-56cc-411f-a4bc-4c3d99c8b806.json and https://artists.proofprofile.net/proofs/artist/341b14f5-56cc-411f-a4bc-4c3d99c8b806.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 0x77118f69bc798d6599707f4cc82b356017e5547a39d3fc8ed3e49b7d6c043e0d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR6V80000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8ae4439cbe14e6cbd1ef588f85ad43a544d324f97be9aae53a836cf5f320b8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V80000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bd448e1a8d733cdb887dea474e0bfa446b86b23f647b74335c41871af564bc. 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/FR6V80000312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac564f00165fb16aa114993799427090e21d830dcf5d6fd41efa48e47934c36. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR6V80100427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1ea8f43ae862cfe6364eedc211aa8563c311921388df4f4a7038d77e74fa55. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR6V80100429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669a767aba55b3e8f1cace3a19c82048ce0ed31ad7f69edfa14f25671326ce96. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V80100430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0334ea14a231b6e7f795d7763757b6fa1dd4c74c505c32771276469f6fde8d61. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:40Z), 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/FR6V80100441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7c537ea3f59a6cd8f26eb731f493851b54023269a6471f746aefd366630676. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR7F60400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295b416810fbe4a5da66e12f5f141a93b5d8866fafd2109ebe78cabfdf448593. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:59Z), 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/FR7F60400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5701a8e65560e82d623dd2a7bfc1ae2b53108bd85d104ec244c1a78255bfe1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR7F60400250.