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 0xc0400e33963e48789f7b40da06dec994067b10210080fc5432e6f2ca19ac1baa. 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/2f170534-cdfd-485a-87a7-a044cf3e665d.json and https://artists.proofprofile.net/proofs/artist/2f170534-cdfd-485a-87a7-a044cf3e665d.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 0x2abd4f4c94dc953358d615a4a931ac179cff596e4ba8b6115f7680b42c976963. 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/USDY41766825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c7905bf73cfebc145de72c11a34794d7d02ee6ddb42703ea2a5a6b8889dbc9. 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/USDY41766826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aada0778b2294e333deb90842ce22e1cf0fa3293d9048089fea39269071a40. 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/USDY41766828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e498a5b53c321fc89e7b64937320b984988ca40162dc0e37be2a64f7ec6697. 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/USDY41766829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6a44b9f7d733280b287a0feff4d972f729587d0c8d5320b3eb3fe9991f29da. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:18:06Z), 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/USDY41766830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2e9d69550c904d3ccd83b8c54e74591a5054e349a74cf6344961ac6dbb873c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USDY41766831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555a7b63b2f21fbc4c32a9ac0e5f308448493238fc7225ef26830a8041782442. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:35Z), 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/QZES91878199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5b61e16ae232a87c42bcdf578e32f9c0dba810ab2cbdda1fb374ee6b58ca63. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZ8LD1926834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4f0f00100aed53239630308c3edfe5f419c1d4c1308c2eb4970020b42acb6f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZ8LD1926835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d25b79f2986f5a44949434885607d27221766d14f5012f45a1a3947bd4d7bdf. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZ8LD1926836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d591dda5d133fefffc52dc30d9024f7676f688fbf766d5c64008bd3a0c5c0f8. 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/QZ8LD1926837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350cc6ab28a1d6d479e705f5803eafbfad74ae20d2f200cbdd1d48bee5c63bf5. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZ8LD1925330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fef705f3442a03dd0ce4b69c02c4329b945a7cef9c7492d91dce2ad8c81f0b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZ8LD1926841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8842b581654314a6fbe0eb8d81ceb8b08a9cdb85df016fe258a337ccffe27ac7. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/CASE12100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ebd7618e1b1603f902a10fa645fff1e9eee5f53a6ff0d8d8a0109203333509. 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/CASE12100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a49242e0f738b40f3fe715086a943e831957e897ab631b648f6c44daffcf2a. 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/CASE12100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a51189e9e212de9cc691773ddc7bb505b3c8be274fd635197f9019b0f28ba92. 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/CASE12100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe115cef7b76bdca2bb17e6c9bccda26376faaee23cc5e99f3a81eda09b152180. 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/CASE12100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf785dcc61b44d25d6af1cf5fad45d15eb4f6b9aceae6be2b4e2f69cac755ae3e. 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/CASE12100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9100e78a7f88f951abe4f226510857221bc8d8da3c31695eba549a95ead3bb91. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CASE12100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b3ae881b58279c337e81900efa9a8cc7e1a5002fbcf8038f006bcf117091a1. 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/CASE12100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a49242e0f738b40f3fe715086a943e831957e897ab631b648f6c44daffcf2a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/CASE12100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7722eabb52aa993136e57b93825fb3f5ae5969c826d0a3c8c6539851dcbc68d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CASE12300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2461b0fc18348e244e611e59464634443ee57ab0b82d2fd6b330dec1159b09. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/CASE12300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718c94ce7aeaa83fb9ceb46ebf352f4ce125ad4a794f501c017ec8de58393c86. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CASE12300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6a85fc5468df4b40588a1ed7d65809d71f2903583e8286ce49a78c93548e21. 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/CASE12300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c1f39fe3b5950e849972930444549fcb79689a5880dcd60484d76ac18e30e2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CASE12300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7722eabb52aa993136e57b93825fb3f5ae5969c826d0a3c8c6539851dcbc68d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CASE12300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6a85fc5468df4b40588a1ed7d65809d71f2903583e8286ce49a78c93548e21. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CASE12300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c1f39fe3b5950e849972930444549fcb79689a5880dcd60484d76ac18e30e2. 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/CASE12300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c72d2b1803cd795960033bb18fcd2dbae77eb712cef0fb7de9fe2f832ffc7b. 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/CASE12300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b764b5aaa78b58951d179aea6b2211f7af494223f944c479fe61dda6ef5b4c. 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/CASE12300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14131f746338aae456e9e9e38e181253636e3574341c10532bf5682a0da56187. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CASE12300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59069d22c4bb1eefa70a96fa78f775abff52221904d04969278994809177a8a4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CASE12300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c72d2b1803cd795960033bb18fcd2dbae77eb712cef0fb7de9fe2f832ffc7b. 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/CASE12300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b764b5aaa78b58951d179aea6b2211f7af494223f944c479fe61dda6ef5b4c. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/CASE12300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14131f746338aae456e9e9e38e181253636e3574341c10532bf5682a0da56187. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/CASE12300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59069d22c4bb1eefa70a96fa78f775abff52221904d04969278994809177a8a4. 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/CASE12300125.