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 0xfc026ca17a619f786fad51a938aa124deb92356ac425724f05c1a7f5bc6beaf6. 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/ec25dce6-9447-49d8-bc4f-63dd42ef6bb6.json and https://artists.proofprofile.net/proofs/artist/ec25dce6-9447-49d8-bc4f-63dd42ef6bb6.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 0x02ccafc3620ddb0bce9212919b9abbf0fd3576f26b873f70ad7733165d0f2ae9. 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/CACWV2255235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ac4cb8eadb34aff5a59323f537fdfe2f0f51dba6d6be929136d7e870cda31b. 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/CACWV2255237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00543ad6fa32df2d85a23749b08fe9734232d22331eabeb53c8c4daafa90deb3. 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/CACWV2255241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc77046eadac1da9918cba889c68e0c3fb2e98c17fc8b22875c99948a8b356e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CACWV2255236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0462dbadeb9f7f64dc56bcceebf39350e7cac9446d3f35f6b504a659a3f37863. 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/CACWV2255259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8da0238f73faca3d08b45765cc330ed3c47d3118123b4ca12f58b8208e351f8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CACWV2255243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100971ced143bb40588ff5c0e8729efb3b1266961c1f4c5e9efe5357a2792743. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/CACWV2255244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979c593d587b05d0476738636d2000412645505ca836332ed8cab2c45cba16b8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:03:16Z), 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/CACWV2255242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb039c5467b63e7b78054cc4895fbecee4cb2fe02a7699587484302acde777003. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CACWV2255246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5184a5f9469f23f0a4f2682339385959c51358e508b706a6424ec2f2e49eb7b3. 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/CACWV2255247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154a3bffaa5ef5e7df65ed02ac5e873737f944f933ba7cadd52ef1bab543c039. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CACWV2255248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e429a9cf2e408dd96a122f6c4a47e4f3a98a3bdc640fd8b7a565ee8e1446be. 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/QZK6K2265643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e635fb74bebff234910b385a83862e4c6f23c402b1d1a35fe37573019d8d085. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6K2265644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed4a06787dfe87297610dbd7b730f3f975eb3b465907fdaa5256a00d9d364eb. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZK6K2265646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9be4ebeacdb4da17d0c913f8ed02294bedc4764778d8877b74631ce8a23fc9. 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/QZK6K2265648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e50a08a6b8c19d2b15d01f80e7b411902b5d67fa2d34ade7a57676ade4f8517. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZK6K2265649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4dea552f5584857040d276dcb6a92aa84e1f1b6dedcc5fc83f6fbe356bee22. 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/QZK6K2265651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e87789ebca5c7dfe2400e14f0469bb443433519d8134b39e6bad92834ba164. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6K2265652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78401e330455d9a5ac2b45674fbeda063e9f05c299e39fea9a96ae12ba7dc4f2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6K2265655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e09d97c3f3a79a8c2f685c2ecd6fd28f813f3c78ed63bf445a934d151f1748. 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/QZK6K2265656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb059a997d6f284304074ebda907898f23887d3b3750a3b6f7d4e9da30c5b90f4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6K2265657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1fe488824f5b2af9be903b64eb363779ca2050f64c3c72905640ef7c1fd377. 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/QZNWQ2200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1271ce143c2cffb2de3974a56e5f99907b7ebeee27ad587de0deca228fb5edc. 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/QZNWQ2200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbfadb3cb3aba0f144d0236dba5ac6348066c451c8a7d33983f3b5b16b24a6d. 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/QZNWQ2200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f61a23010041e8b895722cc104580746705e15f83bdf51bbdaac78cb14cc0d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWQ2200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527e627258d330341c285975401547acc6a64b47647eddd543e2d9409d0d1d18. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWQ2200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4013f53859935d5050dd73499b8bf96482bc623bae283ead455f018feedba626. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWQ2200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229cc42b04539fda22f925890e6ef4740066f36d14b1b730c7f2d207198ccf64. 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/QZNWQ2200264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e492393cd0331b999179768068085b53cecbb8c6310e5fd439cb7dfda49e5c5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWQ2200265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad99c0dfbafa8ca6cf372ea246b208343af0060adb225393c57bf268938a88c7. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZNWQ2200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd549e5166a9e929b392d8967d9fb55ca65ea637bc6b49d3369e3f04994559974. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNWQ2200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf1811c1a78800352cdf4f795d9507c18be225dade3bc4e527606ffa9f9f06. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWQ2200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa74575549614efa85c8fe194187605e60b11c95b94511886ba719513ba77b4. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZNWQ2200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acab82737e04402f2092cb68d792d92f8020ed6a324f170650a8874dcd4dc8c. 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/QZNWQ2200271.