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 0x7f2495a2ce2a4faad53098ed2f9c6e8b4c977ccef11f438c5cc9e7bc481f0ac1. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28cc5226-d36e-4d18-8541-0b2d551632b1.json and https://artists.proofprofile.net/proofs/artist/28cc5226-d36e-4d18-8541-0b2d551632b1.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 0x75c1ad64a820997df9cc532feea6d3a625a3ab359980d68e5d6a8588f7ea1187. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWY2468632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8610c5301b916e93e59c830367c94ec362b2898fce1720480b6df7cac48338c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWY2468633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bae191d1468e08faeb2dc0f630c2ebfe0759b2160113e3b7c8bdf507b8bc620. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNWY2468634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79028ee9caf37fc3d60b077dd126276c24b17d5cbae98fce9af5dc46bba86920. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:45:53Z), 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/QZNWY2468635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb291aa06864d6f0aa765ed47824ed9780fc72a72a8a8106d28007894c4824a9d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWY2468636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f085f96417063632fce3a5d63050579c6c04b1ca3698ee2e2ced9b8fba0c421. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWY2468637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f3cd28951d397eee218c54c7da067dca7d0a89ff3e2269e255d16028e61ce1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:34:05Z), 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/QZNWY2468639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ff56264006650e7277b257a3f91427792c419cbd98e40d49de5c75724b9ce1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:03:40Z), 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/QZNWY2468641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a739148708f43c6115e0f6cc3179565669b6da82a9d88996c722d9c72f755d4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:59:17Z), 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/QZNWY2468642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484410833fb33ad26033c32e82cf5f29e3f39770c59adf0e737bff660dd83de6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNWY2468646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0640ff2c0a01299173074f112e226f58c82680438f236fcbc022ef9045957f9b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:25:38Z), 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/QZNWY2468648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6206ee734d6536734f71b9a6e6f9e488381776afe231100b716a980da1b80d. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZNWY2468649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801aa5c88b09de8ea72838b45baa4ad3102b557c54e531baf7480f69bd65af3. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:43:42Z), 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/QZNWY2468651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d6e6dd6dd7f13e5b48995a29c7cec2543ac8440e5f91e3e423927d10cfe835. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWY2468652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cc4215b89da3945fdbfe9dcdc325b6aa2363d386055341f40659025f9f6a45. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:43:42Z), 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/QZNWY2468653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77801edb6c271f3eea676acc5dc1c3827bdeaa3e6a42f9ffb3969700a3c3f2d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWY2468654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf72d8f9f4384bd7c4cd37619e549e7c58c1324e51137a2c6031e57d6717509. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWY2468655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946352ed6629b002e83cf1d18624ff944647eb8a5a395cfc1581312091978464. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNWY2468657.