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 0xe4a17387288041fac0b825372cea611657ac67f535dce18e5854a7a5f864604d. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f985a9a7-0955-4197-ac3e-16ae979d2a4a.json and https://artists.proofprofile.net/proofs/artist/f985a9a7-0955-4197-ac3e-16ae979d2a4a.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 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 0xfd19f2288cd2c0c3992e64434892f54db1d774c128eaa6daa8e910fe045e291c. 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/NLH3Q2101029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf5237f9b124819839d05105f3434c0be850f3aba547f6b0c924679447d5252. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/NLE801700382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4243bf565378a46e385a6fa05776b962f0f8cff5d3c911c0820e9fde49a0ad. 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/NLFL71700164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb34acd8c52a0d0c5b638a0411eaaaba4b7148081024fcec93abba8dc6110c26. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLE801700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad92d1878a9d54f8bf2859f2cbf2b59e4f939c97eb447753bbd89e4837923e3. 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/NLH3Q1600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1de92bab7a8c4802fae09448a3d8127ee106e8d338cc349359c6de4c1627051. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/NLE801600537.
Blackout (Official Ground Zero 2016 Anthem)
Blackout - Official Ground Zero 2016 Anthem Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eefabd1e81f62bc3ef865880332d29f100c6ebf351f191da8b1114c63f5d3de. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLE801600460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7193d886265bad7040a35d50642a9b86823c4b76baf03369eb9e17790bcfa572. 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/NLE801600389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66895142ce519d7dcedca17bdb0d2f504293c70fd6374a159e6a398f96bd00ea. 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/NLE801500705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f6a5ec85bcbd36cad18ec22b924e2d3dd36e798ae87d58f152a4e5eea2d7e0. 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/NLE801500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2f572af57efb0945963db55cb10f85043d98c94bb2f2a1b11f87ea14d16087. 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/NLE801500636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9677b1f654db1c6366307001b9f62ac8d90d7ea66c78bf9177cd91aa10597c22. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BEB681500326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da7d531ce4cc3f59710c4c93273bcff4ef49e1811314055c8e4c95bf4358896. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BEB681500327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad5288cce56a16ec37386a799a22433b001cf9a0b390af99115699dc57e6832. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLE801400498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d1c38850aa3e4c21dc4d5265f3ae2f50e27c46e21e53050297d54748a7c4ef. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLE801400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6293ddf0deab685973795c30d016d3a3e34be4aeab9dcbf5972e7816e046061. 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/NLE801400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2c985bfae49d736b7ceae2e24750d3b6c5e475f1093511ea4db404d333c919. 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/NLE801300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0510ed4ac2b0a2b50dadfb4c321900d8f7719b9ac44a0065bcefec6830005e1. 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/NLE801300367.