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 0xd892ae637246fc0359984840c80e9df8e9009e5cc9d95801ef8ced5178840912. 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/93bb969a-bbc3-4f00-97c1-55ba6d99bb99.json and https://artists.proofprofile.net/proofs/artist/93bb969a-bbc3-4f00-97c1-55ba6d99bb99.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 0x225cf9c78252c5eacad9654050f272bdac07e4939ae5981dbca010539c55b7fb. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:38:11Z), 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/DED832200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515c17435716e7d1cd1744114e1c9e9b5bfa43c96f6ea511dc65a6c05d7bee21. 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/DED832200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9576237162198715d2553284d683b441f07c8776de940572d464085f91467aa. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DED832200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9576237162198715d2553284d683b441f07c8776de940572d464085f91467aa. 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/DED832200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515c17435716e7d1cd1744114e1c9e9b5bfa43c96f6ea511dc65a6c05d7bee21. 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/DED832200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fd790c2bc7470a320041fc0744e499b2d0978692c2577761c4f00715fc4f36. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DED832200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9576237162198715d2553284d683b441f07c8776de940572d464085f91467aa. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DED832200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1856b2bc4d683dc33b781712397ef69e2b695be3ac1e89daacc458b86b07ca46. 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/DED832300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0878b01d117e6ad025abb918b30863dbb13770ec3baa4ccedde30ec8ca3778ca. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/DED832300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93859f17fb2b604a3a9730bab4bb83a17ff3bf76017ab51268b7f4535c396ea7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DED832300300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae30ab11d95226082ffdfd2223f0eefee2d76d9d57d0e21ec85209ab0c2570. 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/DED832300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa338378063dd10fa76c9425a33e5c3d412f81fcfb4d9f08e2676c6921e642b5. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:46:44Z), 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/DED832300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf511a4994312e3e61797df7347b9f3b8cb78206fb4fa9cd66f53c5d5bc5323. 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/DED832300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9eb31754229c0958ea415163d5608eacce4e94ead51feec966aaf37fbe7c82. 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/DED832300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313fbccb7e7d270c7b1cc09144a2c76702eeea9136409682f9cb9438682ff167. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DED832300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2dcfb5fa29d9740b34eadea0df0c5949b0c32ad2262ee5da595360d635877f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DED832300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15823d3c82eef538804f0c287ac5b30009f108dc962eef21d22c02ed5b4e966. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:11:10Z), 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/DED832300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1856b2bc4d683dc33b781712397ef69e2b695be3ac1e89daacc458b86b07ca46. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DED832300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58baa8b65aaede78dd86497e7108a2e95d3045d91667790f030d7f6061bb6215. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DED832300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0878b01d117e6ad025abb918b30863dbb13770ec3baa4ccedde30ec8ca3778ca. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DED832300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93859f17fb2b604a3a9730bab4bb83a17ff3bf76017ab51268b7f4535c396ea7. 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/DED832300300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bae30ab11d95226082ffdfd2223f0eefee2d76d9d57d0e21ec85209ab0c2570. 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/DED832300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6327dd2d2aa378c3176d980a9f9c58e164ddf647d906ba24c788e015df9007. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DED832300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa338378063dd10fa76c9425a33e5c3d412f81fcfb4d9f08e2676c6921e642b5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:45:36Z), 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/DED832300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9eb31754229c0958ea415163d5608eacce4e94ead51feec966aaf37fbe7c82. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DED832300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d3b4ab9950b5a4499dfee70775ed6fb0049dcfdff34a9bbf2ebc1ab6365310. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DED832300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf511a4994312e3e61797df7347b9f3b8cb78206fb4fa9cd66f53c5d5bc5323. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DED832300307.