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 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 0x1865c6701f42c978305b1ff9af2adea66d42ddc01e6e94cfa9692c607f0ec258. 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/6c5ae0c4-e33f-4f23-9492-18d7bab7930e.json and https://artists.proofprofile.net/proofs/artist/6c5ae0c4-e33f-4f23-9492-18d7bab7930e.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 0xe52ffbd373350e1273202192f75fdc54a14e2a40a541a7e90006680e19ab90d8. 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/GBCPA0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b41fc18067be21141e1b9819dc421ccdeed0000536fb996ae5b2a70fc0c717. 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/GBCPA0700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b74eaade7747441f848948bb3886c4ad591dde26144dd3a4476a535a0f5b37c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBCPA0700126.
One Eye On The Future One Eye On The Past
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc17056f9cdedbd04ff8a265442f7abac4d857fb592c15f8dcc2c99dc3c7d3ae. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US7SF1355144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b38aad15d8f6c751b6a33782f373a7dca6ef00a158a3c8b1f5663edf2c2439. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRZ559700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6858333a003c835d84b3e357d39b38f847d713c2a8a3b94712664142e1107f20. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRZ559700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b38aad15d8f6c751b6a33782f373a7dca6ef00a158a3c8b1f5663edf2c2439. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRZ559700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6858333a003c835d84b3e357d39b38f847d713c2a8a3b94712664142e1107f20. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FRZ559700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec64f6d3490b4f95b21533a77bf9306c8c427b59d034807bede758ed7866e2aa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FRXY20200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3958f2e60e902f6d1d6c0197e714da7db8178b7fc984b7e70efa19f2a57226f9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRXY20200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede8502e90469e2f3cb3493b984c5eb90f72fc3875ecbb00d622b7e6fd6bf5de. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRXY20200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e3a8b5fdf9b872f0faa041625b45b6a60befaf1e12db54384bfc79ae06599a. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/FRXY20200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec64f6d3490b4f95b21533a77bf9306c8c427b59d034807bede758ed7866e2aa. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FRXY20200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3958f2e60e902f6d1d6c0197e714da7db8178b7fc984b7e70efa19f2a57226f9. 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/FRXY20200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede8502e90469e2f3cb3493b984c5eb90f72fc3875ecbb00d622b7e6fd6bf5de. 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/FRXY20200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e3a8b5fdf9b872f0faa041625b45b6a60befaf1e12db54384bfc79ae06599a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRXY20200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbe07f1bdc1c41ad59d949fd5603faa94b8139838de7660e2093082b547a00a. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBCPA0700067.