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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bbed54606ba883ed8dd4cf75d47eb1d722be766743276d51e2b21d826f136e. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03b750ab-2587-4b77-9563-cb9f6544cb8a.json and https://artists.proofprofile.net/proofs/artist/03b750ab-2587-4b77-9563-cb9f6544cb8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Super-Villain Team Up: Injustice For All
Super-Villain Team-Up 2: Sign Of The Skull
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a604b03659e24771a1102424c3e08ddbe584d51e3bfc34a97425477b6ef5141. 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/QZES52570720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7549fe8ece01e2142cf328760096073ca7711a3f68022a10d3d74eeabbc4e7ae. 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/QZES52570721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cc71eec06b153f33301061cfb3869eb4782dbd6037cbe3efc7fd14355d344c. 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/QZES52570722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3437ed925461c001d4153c142be6f5fad7e1a6ec0974ee515fa1e7ccdd0fc6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES52570723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d789e2f26fbedb1ec619ea3bca22bc72338714ed05ecd1bcdd63073f0ebe3a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZES52570724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e85eea811ea8b6b1da5beaee2872bedd70d4a881f283eeebbc322eb6ba6e074. 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/QZES52570725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993500b320352b667897eb71ade6e20ab64993a6bbf1baecce929742d2343f91. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES52570726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d34373c2388126c85260a5b66e8f0952c607c8537838ef42d5b6b81cacd1fc. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZES52570727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332534bda68c718e82a2e87db7d4d067544f050e01792badd57f7248e8939fc1. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZES52570728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c66c82e261478d3c97b7f5b3314ffeffb4a6beb4e3057d0e0b484534793853a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES52570729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02944a1395f4c49f2734f38ec2865f9559ee2bef7031bcdf22007f55ddd0513. 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/QZTB32412069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b25ee37e9587e9fdd633f1975eec46be18da76872e6ef960283eaa9cc0276c7. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZK6G2308158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb927a617a8737ab2a612d27f1ac0e2a71e232b322700507e40a968abab182d9. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TCAHW2444173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd647e52e99154caf274d5de58178fa939a65517db7dd0c15a314a8009afad425. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZTB62261398.