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 0x353d689e1fef08215d13e846a621cfb4b60210497fa84c1ab828b4b0cec84d2d. 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/35ade4e8-a9a6-4c66-b397-9abd551d132c.json and https://artists.proofprofile.net/proofs/artist/35ade4e8-a9a6-4c66-b397-9abd551d132c.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 0xbdf0139729f14cddffc422beb841cea12e489b7c1978c9fd7285c05736de9eac. 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/INW130407222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37a168646641d3a936697fd83960ad8a9a39d073a4ec248709f311cee5b61eb. 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/INW131207223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352750acad599923e5194911f50730551e41a3abba3b898a79d29513ca969a59. 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/INW131207224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3481a9eeb33bc9a5c68b362a1a9d7d6e07471579d1f72c88791213e9c34596. 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/INW131207225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cfaf14953402ac7b50b18cccff240a23ce03ac4b15e48af101df4eb975346f. 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/INW131207226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b91cb6dafe848e40f79e63841fb63c451ad31fee3135c12d5abef6bd8bdc3ca. 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/INW131207227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58225136adba163a29659a08830bfd7d7d832b1edb72119b89db1e2467058a4a. 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/INW131207228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8828d44e7e8f3094526cb6b15662c6c8cf97ec58e18061cd0776061c6154d9d. 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/INW131207229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa318ad6318bd424c52f793caba61a467bdfa692f3ea15766746d78e4f146d110. 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/INW131207230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14bbb809e0584cbcf09f4f707d6d90aa4b269da3da6adb8fa33f241c80c88e1. 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/INW131207231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35824b28e35bdb7747623b569276aeb631569699e84abc2feb3832ee7e80bbf3. 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/INW131207232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe46e6e4a8a54a157e992e695dd74fe6b71a36ba6508376e87a4f98339fc315c. 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/INW131207233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa111a854da03884504696a438bb989a5c320c8b17fb657b5d7284f2e488c25. 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/INW131207234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ada396fbec18c189385d6e6b7b53791b70a628ab3a9ac7beaf737449676c53b. 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/INW131207235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee98e919337ec1f76a67815564c446424be51c3c75960014e7967405ed6445a7. 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/INW131207236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48720126130e62fb16be401976f877c4994d0fac247c7e8a109212a4bca57008. 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/INW131207237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1255d72bbe464b686920fa38d4844c0f3002d7e325cba33ff123e259ca484526. 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/INW131207238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe677c3dfe1d96e9b13cba3d3f0595dfafe35d3eb89f1710b1970fb5bb7c8d640. 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/INW131207239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd58eec2b1ac6955487d34dd945f06545c02d40628923928cea33c55adcab1d8. 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/INW131207240.