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 0xa90cba541d479f80b22c46a97f515fe277725644f3a4b534d67cc508c436d05f. 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/f6c9a673-5db5-4e29-8e39-08546a544f2c.json and https://artists.proofprofile.net/proofs/artist/f6c9a673-5db5-4e29-8e39-08546a544f2c.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 0x68dce1e63e18f4b145ce1d6f9e4dd7b45389f45e023593f7d90b566d9ef1a4ce. 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/FRX762144860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74614b1e703e2d9cdd07b2ab34aedfb46ba2925f3262df77aa71954debde2c1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX762175057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2efe4c317bdbabfddb585d71b550e05ef2a0121a196e742576f7d4da3815a6c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX872122845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8013694a52cdb702ecc8d49256e2f97a6246f9f7124e504eabeb536786bc8de0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X42294901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb149e8a04e60bdbc0763ab14068bb1e7c2208cbe3601b75299287d5d02f6067. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX872123103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8b5327e1cafc75f72eaa4909bd7ba787797eb0f5f6fddcd22fc6e1b22d3d2f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRX872123102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae06d539e0e4bc029ebfaef66a6010ad1614326402e7d8172cca0215abdd52f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX872123100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3860054deb8465c8e003580e883683d4032719e030b4df3f616fd749129ad194. 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/FRX872123105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea0c030e9e13719d3805787bb014687dd9a6ea7ca2f69076f2ecae03e1c7917. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INUM72400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c99ffe9db07eafd68e3462d25bd2f7b8c61e1e953454c8ea018859f645d74c. 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/INUM72302105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b88930817372b7d19990813f87470d7e731c73229e79ca17f1a6db44e0062e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX282362484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165905cdd55d37935315f95a183680634ce562a17dac297a11677454b7815e09. 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/FR96X2347538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaec746decc7ceb499f2627b4559a09bef310ef15ac0ad2859a1750d30f5076. 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/FRX452297856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3de7230a8ab50f2c6792f8a7227c52f652a126c1105d964a85af18b7a99bc53. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR96X2221194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3860054deb8465c8e003580e883683d4032719e030b4df3f616fd749129ad194. 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/FRX872123105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8b5327e1cafc75f72eaa4909bd7ba787797eb0f5f6fddcd22fc6e1b22d3d2f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX872123102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb149e8a04e60bdbc0763ab14068bb1e7c2208cbe3601b75299287d5d02f6067. 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/FRX872123103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2efe4c317bdbabfddb585d71b550e05ef2a0121a196e742576f7d4da3815a6c. 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/FRX872122845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74614b1e703e2d9cdd07b2ab34aedfb46ba2925f3262df77aa71954debde2c1. 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/FRX762175057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dce1e63e18f4b145ce1d6f9e4dd7b45389f45e023593f7d90b566d9ef1a4ce. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX762144860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc457d94ac792e626e3997efcdd14ebcf546907d2a09e34b3f4e5770f6e632d48. 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/FR96X2146216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ab45515f344dcf8e9794c1be57a747e9473e24581ec3f1b9de33f124b98969. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2127475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787af87c2efeca81a6863f99164107a4720d6756dd71d66d82f10139257aa7fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA062020767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ddffb6f94610cc4c38b6d0f5dfa1ab843196771974502f8b8837cbdc4e37d5. 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/FRX872029398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bf7d5ad9f6476b448d2a2d43c1f9145d7c1875caf7075da1aa1e0878729dce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX762010638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebe5723c88e086640a59bc945dcf3fad533a04eb79343fa5155310c5c223223. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR96X2017795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f722df5ff4f0a41c04604b5aded74fd9b13c9e330be9b5a56b660cdddc7748. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X42090160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bc8875cf096c1876ba309a924459bf9b66111513ab9798eda97f489948dec9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42071864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a23ea5a5da943ec5b050c1491bfa25d17101ec39872f5b5d0cd7217c6cf2a28. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INUM72500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850b56f225f6b397ef289e668545f8f3e3cfbf45e4fb527046e3d6dee3a5d4c7. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/DGA0M2408307.