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 0xacbb62a3ac65fe367070d18f208175df5fcbc210e1352913895a180a185610fa. 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/fcec7d32-9cf5-450f-9e43-d86846a13a50.json and https://artists.proofprofile.net/proofs/artist/fcec7d32-9cf5-450f-9e43-d86846a13a50.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 0x14372375c300780fc4658c029e7ad3d8716cfe69f804e999011b6c1fc766b317. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472375279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92d89b4c5df856455ae57e2fdc8b97e6bbf216662f3841d2723be8527407271. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEY472375280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c63daed46160d9ac9cd7505ee6d0eae3f2911a23f28ddd40b7310e7e668528. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:40Z), 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/DEY472375283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7431e5b97eed5f47c71918dd611787fe84a4d9a4cd5903000f53502388610e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEY472375286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5936df7340b117deabe4a6613ddcc3935b679e7181021741bb46b53ed3073617. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH741815381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca480b9123a66f01fdc3100033a5b3acfee911d66e5cb297b5a2024147ed8bbd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEH741815382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18e7f183e53580ca07dbc733de85150a4de7324de2d62f05706cd178612946e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZATS32400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69441a1ab02ce21681b47c18e52e8f1903199851639b66a9ef8839ca64e82088. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZATS32400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f5599a24b1578bec3c14f0e1f02a75e9993350ae86c6674927946538850342. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZATS32300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d445c88ec192946fa35efb5a90a0ec17f70942c5476d1c97c303994ec944c0. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/ZATS32300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab91bad0df52899ddb95787ca3f071260570bce64a27d13e87f09dd9944f283. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZATS32300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a14970f745332dd7f2eedcb7291b4e35a5dfb39c58711113f3b5c9d6c3ece38. 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/ZATS32300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab91bad0df52899ddb95787ca3f071260570bce64a27d13e87f09dd9944f283. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZATS32300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d445c88ec192946fa35efb5a90a0ec17f70942c5476d1c97c303994ec944c0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZATS32300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754fe2201a7c6f9eec4e3d853cbcfeb4cf43d97bacab985fec0b02ddd9054c85. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:31:05Z), 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/ZATS32200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d466b4f5eb160df21caee381784d17c69e8e131016a85506a5b2ef8a5b1194a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZATS32100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c99e45b6bc1794daa0473c411dcbc1b20b8cf0f9e6a77ed3c8c6b257bfa4c50. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBZVM2100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4014536686a0236ac35842ccb34ff3eab298db48503dc5485bce549de721bd2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBZVM2000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652e66378c87aec5301599a961055ed07a29de4c294c8f50f95bfa490fdbab5b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU1683555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c94b38c614673167fd8746a93cd487f93fc780ba912f24602122fd7b93c583. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEH741642009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f3a3c57699e55947572e4fa325a5d049938c365ebc60d4ef816110f412919f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEH741642008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb481f44cf7964284127ce8cb574a8e7e82643a7142131e653612812b23c57807. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEH741642011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ba488364a97a302122588e4b8ba0140f95063cd8c4508037b4a999dbd11cb5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBLFP2107053.