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 0x8e2242490fe860d16ad04c601d634ddbed20c3d876c8595a47aaecd6aaecb601. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f33b06e-b396-4197-9c1f-76c3708e8d2f.json and https://artists.proofprofile.net/proofs/artist/7f33b06e-b396-4197-9c1f-76c3708e8d2f.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 0x1cf85ea0883a681a584ceda5a340b8751327e95db0e6c121a42b368c33d584a2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFK2390811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115f6696b2b092d7fff112c80af0b843a24738b35b175f03359d5671ec8f2009. 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/QZWFK2390814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726ef24317e86120ad0e2d5cc210d3b473e7653a1a61fd71d525a3d2de887aaf. 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/QZK6F2034749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2262a57b5498a1a239d5e865a2187357163c8273e7d7867524bf92a25f2c98. 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/QZFYX2474937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c394f6456f0c20be219d8ff4bdaeafb19f67aea75150be00c3359e40e17dd3. 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/QZFYX2474938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9d4eb2d764855583fd1c1496ca659006c05880d858d31e6c0b071b1d65cb3a. 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/QZFYX2474939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab30e14d9d612ae0534f2744430b2e41076d65f1279d9f52587376cd524c6562. 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/QZFYX2474940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8917b121c07de5139698812c0154f54c6c7518f82533f4b9e7c2e0b14132a2a4. 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/QZFYX2474941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc982daa06c1733e212d8959a44b168dd6ce921f481fddbaf8f5ca83df4b13b. 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/QZFYX2474942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d9b3592d691ded88ff4db8d6aae01ad069d5c5eb4fc37238298cb1ff78fb25. 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/QZFYX2474943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59708b7e49cbe5562390e46d9aec1eba545e5d349e81a590b04016f500db925. 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/QZFYX2474944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746a081529d849e923bafca2b1ae77ff0017afdfd22cfe550f655291095ddd20. 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/QZFYX2474945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99ca9c3cd6e7f3256de3344aceacc32c9e0346c0a47ce1ffa017f0ed7eff693. 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/QZFYX2474946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dca90d3c8b078a91182c619494acf927d6f84164f1a0513c25c5ada672c5fed. 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/QZFYX2474947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea89d5589938649de505cda0baf301cb4d876806d63b1ff4fd8bc86d8bbc023. 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/QZFYX2474948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087bd2b63e4fc500f0eb101c6ea13e4b7881e4d4270e1c444081553a079f3a6c. 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/QZFYX2474949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303539a42596ee861b6c24590991f7ae2cae5f0de8ece28b7a5430362f3aaf71. 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/QZFYX2474950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b5117d7f2ee969185259378badb7eb5c98fcebc7ca54e1b6f7b4b3be74627e. 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/QZFYX2474951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77998fb23e5906b09e2d88cc04b4ac80b24d7a967b25114a0ac2c699c0975eff. 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/QZFYX2474955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a309e53434bbeb9a75c140c828e7e17ff8bdd643806f1aee985eaa926fe714. 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/FR59R2131748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a309e53434bbeb9a75c140c828e7e17ff8bdd643806f1aee985eaa926fe714. 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/FR59R2131748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715ddc3882cc2829a32c8c6e38cc8510e260810d5fb7013010bcdd92f2e6a805. 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/ITNXV2000026.