Tricot Machine was a Canadian indie pop band, active from 2005 to 2012. Originally from Trois-Rivières, Quebec, the band's core members were Catherine Leduc and Matthieu Beaumont."". canoe.ca, 31 Janu
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 0xde2769b3d041d9fc91aeac1b351fb206c52bc6decfba80059802c9691dbba44d. 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/d454cda8-bbff-40df-8de8-8c076af6c3ff.json and https://artists.proofprofile.net/proofs/artist/d454cda8-bbff-40df-8de8-8c076af6c3ff.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 0xe2e25b1458dc0f1c760514f5a58cb6e4e9eae67de83970ec261b6dda14311516. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CAD430790204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7540762b1a639cda959d5e4a21a79a4a267b8c3d580e48153bbd5832df43b73a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAD430790211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8106bc372143027bc7fbe88ed3e7338212ac4cca04363caa8df45b1b925f2e5b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:54Z), 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/CAD430790210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5555524b724d8f8c52f8c42861928b3ce6171d99797e4d75bb5ad9bd3efccfd. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/CAD430790212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0a7f683148d67cdfbf357d85efa80b09de8937c250d6c367ab5192624d0e7b. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/CAD431091413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fa301ff467a98f7db6ade37a4bcc562a9f8dceeddba809d27275e59c88bf5c. 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/CAD940981810.
Festival en chanson de Petite-Vallée [Deviens-tu c'que t'as voulu? (L'année Daniel Boucher)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc2f5d5ea29d1e9fed6dd00e16572f9b108e639e840b6c9a952d854fc3e2d15. 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/CAV700819508.
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