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 0x55768681aa00c3c8d27f4bf39aa69ec54741f9598b559a2103421b9a2d28f639. 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/88460815-8748-4ee4-99eb-3d4b1d0cc669.json and https://artists.proofprofile.net/proofs/artist/88460815-8748-4ee4-99eb-3d4b1d0cc669.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 0xe45553fb114b8f4fba038bef04fdf2ab0b40a9b7f3f678c889a69a2949fc4770. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:26Z), 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/USCGH1017048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e8adf4fa6061e60c97311fec3b7dcc8e7d02e6ca9bb1a99b606cedd2df3db5. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USCGH1017050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00899c1cc272c47cec9e6a3dde59e4fb10e1cdd22c12580256f78b6edd49d68c. 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/USHM90945643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a009c53913b407ced0e8ec3b77f90b3f00ad2c12aa6440e88d5446e853119e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:36Z), 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/USHM90945646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2531991a5722fa8ed7c756fb5fde0790d7b59a57dfc5c658ac26a84898b2f6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USCGH1023474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b1a52fab4f048e61938d0a996fbfcf5a9bb85182f2ac62e536cdd192ca3a67. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USCGH1023476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e723e7e2b267da5ad5c046c7346c37b8ae3f53504c6f6788ca594df1448f433. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:52:16Z), 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/MXUM71100445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8536c2cb59ca51a687c12503475094f88436498ff3e35631bcad9495428ddb98. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:11:34Z), 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/USX9P1144457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a64d4f2f73370778f5d322cc8f9dbfba97cbbca5823c56b7007e50216c69e2. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USX9P1144464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06ec88fa2190dcb9fb5ff8aa6f5618b18e8fb08dba437f4c9a7a011902c14ad. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:43:14Z), 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/USHM21390246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ad15d847a1104103d58beeec01271dd0a7ff93ecf052949e57f34cdf75724a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USHM21390248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010ddbc9cd637be1b2acf37b4598821e6070d1141a09deeef022a3f86cec49f0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USHM91734070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1e717d5612dcd508358487ef45c7e06cb5bbe7db7800243a8cc1e373ae9608. 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/USCGJ1864146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30d726df281f48ac9fee093ab02874c5e66dbad5f525346f6ba8662b5ce1352. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:47:25Z), 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/USHM21805509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f36d39b5214c7e0d5121d93e8947bb3b4c37c74c9d5aa4a798a39dbfa6a8b81. 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/USCGH1949132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e4ab1669332d61514bcc88f127c2ed47eaffd6461f7d5d5cbe6bacea494340. 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/USCGJ2087900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523d21d352d3a99c4da8811ab16f757e1213f057f074ba5992903bda1d69c2a6. 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/USDY42073351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f62653eb995b712f97606c40c94c8f5d5fce75a45aa6c88503e72069a2c99fd. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/USHM22012209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd814c20c61a73813dd9de43a486f660912811151708b6c2a4835974db0fe80e0. 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/USHM22050126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b161909622c8d103a70fd46cd19c2acba3213e8d4c39525536e2217ebed345. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USHM92069382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc6cd65afd30448f5976daa1bf56a44b443fe31efc52c4cc6766a83c67150bb. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QMSAV1105083.