Rossy is a Canadian regional chain of variety stores located primarily in the provinces of Quebec, Newfoundland, New Brunswick and Nova Scotia, Canada. The company was founded by Michael Rossy in 194
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 0xb988e07d8789196830bea09ae3328b0da596591612ff181a5ce57282af4e9b9e. 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/388755d7-8ee2-497e-8b38-e8e6ee0dc398.json and https://artists.proofprofile.net/proofs/artist/388755d7-8ee2-497e-8b38-e8e6ee0dc398.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 0x1597716e29677ae40db2a8ec6e2a9c8b4326f177259c0713b3e72e4aa86b023a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBKPL2282208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b86f93420339d5d4270ae7e76adc10783ed83ff2a89d358bbaf22367f37e5c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/NLRD52264183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde004e8c2c8e2dd9cba20f00de2a9176a3b732dd5104e328b68c78f788cec31a. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/NLRD52264184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be610b652febfb157d5e5bc793fe2aaa0a4c0ca998032b4f2f8fcb6ba649070. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA2P2322559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77defb94bb529d28730861dc2aa482c4cc9dd645b1d92c034304f1ae533c2aab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:39:07Z), 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/NL8RL2333419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275adbb61228a2513bba5343a8545e87b142018bf6d5908f85253732221892d9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NL8RL2336095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa9c3d49a92b9393bdc70e6dac1295c1710b4ea09cd1df5453f8dc6e2269913. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/NL8RL2336110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53f4d8a0e803d612e0d14a413ffb525b4d6557f2eeed01111bc2f1a24fbf514. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL8RL2336111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48c69670a1fe4705d0893228a6e32be632db79afc2f753aa29e9081b38c5601. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NL8RL2336112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1950a76d04202f9b9b4d59d451b344487dde149e5305156afacd777e487cfd5b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:22Z), 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/NL8RL2336113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad0eddbf0f5ea5c83fcd7603e14787556137e0f2c9f4a0bde766cf45372ed93. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZFPL2400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9348fca27007b45824867550e6562e4820c114a9d541093c574dd01c9ff56850. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFPL2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fcc8cf0caa5d8f860b2a77d2dba8e673b45a3d2b0a1640b1e0ab37d4ba4f2a. 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/QMUY42000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ebc50c2ec4ebef48fa168bb22499507e0f46e2755c925bd2bc9d425708836b. 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/GBSMU6258003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362f433b8004aa5062a1b463c5cd828fd13baab65a53cd73a9f59dc35a88ae5e. 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/QMUY42100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdfde8873481e85b22841cf1cdd2be3126569b64003a9a679696ddc511eca8d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMUY42100194.