{"copyright_id":"0xd8e3d4eb084ee6fe4fdceec201e377797fcbdbdff61e7d00eb0888f21525dc60","name":"Opération Zéro","registered_at":"2026-06-11T10:52:45Z","symbol":"NIM0005289","token_address":"0xbe5d5dc5e0c6bf81fc3c77d93bca2cd5c5a7b246","type":"artist","uuid":"03b7dca0-f43a-42ca-a16e-7071e04bf4ae"}
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 0xd8e3d4eb084ee6fe4fdceec201e377797fcbdbdff61e7d00eb0888f21525dc60. 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/03b7dca0-f43a-42ca-a16e-7071e04bf4ae.json and https://artists.proofprofile.net/proofs/artist/03b7dca0-f43a-42ca-a16e-7071e04bf4ae.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 0x527ff433e4d2ad0b093c536f9a66ee5cc31e8611ad84708a7462e06d536dd987. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBSMU4881215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e7d4d7c75b689bbe76ff91a71c9502c71320548d6ac5e1eaae8e70dffbca27. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GBSMU6369201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c06f057ba643fb998ba97977761571b355df76ca30d63b222fef4c78875265. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBSMU6369205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402dd1eb4515cfed0c154d92ef732641361b2461f793e215f50257d428272a18. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBSMU8644671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbc6758b98dc8f0939dbdfd355b24d6cde26512967eb7633671cbc2ac321ed3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/GBSMU8644672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9286e0a0cea44ba40ea63db28cbc7e86952480608fe05c32b72b7d9cb25712b6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBSMU8644677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087d823825b4d5f76fd018ff8c790d8957b6c7dc27210ca647431ac7b1e66bf. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USDY42291019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe69b2906b6ba6a55e7ca497337b96ceca00e1002193a217bcd5235952dd12a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/CH7812228513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d5aea0278ee75f28c7282480dcb31c7862f56cd2db777a9f4f6d615099fc0c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7812231170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9278b8e0f20e369e4768f4845de15f560a5c2d918f3b627bd68595ced3db87d3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CH7812420084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6019febfa1674c2bc96101cbb940b9ec80ac507d305381f065a63b3f24947e21. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/CH7812424482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989bfc93197a0e7394a82a26feeadfd8d64c29b8edf86e99f908aeddd1a726fa. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/CH7812425395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc4949651c1d544a77ec49fa9e38156bb865f724faf37c4cc59a42b0f28505d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH7812545818.