Vishtèn is a Canadian folk music group from Prince Edward Island and the Magdalen Islands, whose style is rooted in Acadian music."Vishtèn débarque à Moncton avec son nouveau spectacle". Acadie Nouvel
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 0x513ca511266c2b273e476e4074237f2a5753cbc46edd726c7e041d2e6bac7c86. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2879112-0512-4377-9115-a3ce8cd606dc.json and https://artists.proofprofile.net/proofs/artist/c2879112-0512-4377-9115-a3ce8cd606dc.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 0x775c975abb70747009a0533095b10cce52de82e83464c9447da4e5365a153d3e. 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/CAIM52000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddffd074b1eee269fa9f351f1cbb174d6e98e738ea4e57fef00a89effcba8116. 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/QMEU32403308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46226f0dad2b815c41a9694eac2514fa0e420c9de831baabace66aaca59f6189. 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/CA7WV1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d1bb6a9a77b331b7759c45ff77fd5b10db3b5555361ee943af10a5b34f26bc. 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/CA7WV1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6df4b76c2ec5ae054a029ea11f0a69a4d8d0600af656bbc0ee59f3238c6fed. 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/CA7WV1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a34c951c9eaa8c9ee618ca02056f7ca2daacc9f6518ec0acdfff482c73c8119. 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/CA7WV0400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c5ebc9c10d15562458583df4ad4f3a72ca013bd0e0ffbf230a67f5b028b567. 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/CA7WV0400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e6264c6f8d01a7fa66dbbbc13d2286cde17fadf36ff3f3257bdb6363575e9c. 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/CA7WV0400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95ca2c37374c3d00f9d4e36a13b1f2161c277ef3c0f194d7651b3d4a29b6b0e. 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/CA7WV0400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71df02f921c51e2bbd8340c7ddc4dd2f102c5c33cf2bc9c23266407029df92ff. 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/CA7WV0400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47367ce8ca034efa984a3b1e4a86d13cdafeb96e90601606416de9841c3fa81c. 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/CAF421600860.