Madison Violet is a Juno-nominated Canadian music duo composed of singer-songwriters Brenley MacEachern and Lisa MacIsaac. The group has been notable for various folk and pop award nominations and win
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 0x2a058110aa6734b43767a56e20ccf2769dd4bbe1f26c36cfcabef3ffc040be67. 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/2c9e3e8b-43cf-4b5a-8b49-ef305fab1863.json and https://artists.proofprofile.net/proofs/artist/2c9e3e8b-43cf-4b5a-8b49-ef305fab1863.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 0x137e486e71196ac03ee30b51cd22ad3abcda481690a6a121c52aa7e6db7afadd. 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/CAT240901810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d10e0a5447c33596535995883a0521377dad1a3ada7dd9bce860d857e11bd4b. 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/CAT240901813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d77b5bfb0bf316e47693b248da7d4a236317dc8c11a676278f13870ec27f71. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/CAT240901815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd64ebff675d91c38e67e3938b914ad86db1fa50141e7bbc57c052b36365902. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/CAT240901816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137e486e71196ac03ee30b51cd22ad3abcda481690a6a121c52aa7e6db7afadd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAT240901810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7070ce22ef880339c2be56d053e60812603a6f32cefebd1853d60435cf5494. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/CAT240901812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d10e0a5447c33596535995883a0521377dad1a3ada7dd9bce860d857e11bd4b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CAT240901813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd64ebff675d91c38e67e3938b914ad86db1fa50141e7bbc57c052b36365902. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/CAT240901816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8aa93913bb4326c5dcfefd20b24d57102861a24db0c7ede4023325f6946251. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/CAN1S1500018.
We Are Famous (When We're Breaking) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ef9bcae5b714c02e015605ceac50d60da0d0bfdbcecc58ed6a4684b0e8d336. 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/CA9812200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7687be5e741c4de47034b295391eba00e2178296454e1a2d7f6d666fb230101f. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/CA9812200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844d770811874c245410aa8ee4f024a43c332f218124313ca2487cbbdce02ac5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CA9812200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2915b890f1c9c257b95fa9e629e7b84897cce8a5f74c33e99a16b7c21a1f8f22. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CA9812200007.