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 0x2242c61acf5f7dcc04453c2c442f3b275ea33464365f9547c32124c745281bea. 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/fc8bf63c-f0ad-46bd-9055-f00d419b165f.json and https://artists.proofprofile.net/proofs/artist/fc8bf63c-f0ad-46bd-9055-f00d419b165f.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 0xaaecca793461f9a74ce80b9ba27d0a2bac5edb2199405bbd95173a2c67f5d2cc. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/INM6G2220005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d65a41ecca0a304ae413da2cd0f74dc2f03328f62da3ec019c608556d657126. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/INS2Y2304290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480075528fb3d224b58d6d6b7eced2e84c06e13055e603cbc3cd3bb3b6003163. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:40Z), 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/TCAID2430525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8a3d3019928e0c4a0a77f203df8abd394c77ba4cf5f05d83b940612c65dca3. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/TCAIC2439147.
Kumbakonam Vethala Un Paso Enakku Pathala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273c69c3d194c187538078e326b6f1b08ad0c93d69ff177bb1f404452c260c47. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJU2555316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953d34d545475b7bee9ed6ad0fb033797a7e1e4795d1c965dbf32a5c7807db7e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QMDA62587154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81324659bcccab969524293bbb14aa0a30663bac36459ac3bb1662f71e01a7fa. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:48:06Z), 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/INS280501210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34684b6b001edcab3fae7975b6d202fd85af45c5bd5c15391671c1753f5c406. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:41:45Z), 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/QMFME2556402.