thumb|Ségal performing in 2021. Vincent Ségal (born 1967 in Reims, France) is a French cellist and bassist. He studied at the National Music Academy of Lyon and the Banff Centre for the Arts in Canad
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 0xa3a3f18c21b4393f2738d573ba10228b45f5c6d4c9ea46bd36a01867ee798dd3. 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/c50a4874-68c8-4169-86f4-f7cac6b2c31a.json and https://artists.proofprofile.net/proofs/artist/c50a4874-68c8-4169-86f4-f7cac6b2c31a.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 0xe01958f49fb8d4da004b8d955f3e6e4180a3259f0b35af8512826741820cffbb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR1F30200410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c378e1c6e60efefe751ab45d743e33e2ca38c1cf92c0583e4e94af7c8db979b. 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/FR4EO2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823b09223847c475f33da433be96a620280e786a299e489514d5fe4564ac9c93. 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/FR4EO2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a809bf40226af4c3b31519f64fb574ba00034828fd8d4ff18e82bc708b128. 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/FR4EO1900135.
Morning Tears - From "The Painted Veil" Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003fb5db907448d9c036f12661bbee05280922713e22f3591a1379900a610b09. 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/DEN960631115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c378e1c6e60efefe751ab45d743e33e2ca38c1cf92c0583e4e94af7c8db979b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR4EO2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823b09223847c475f33da433be96a620280e786a299e489514d5fe4564ac9c93. 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/FR4EO2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8e2ee70715ee40a1949872728cae2ab91927aaafcea1877fbd38213ec20d07. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TRANV1400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87dc0fcd67f0632045f3da6d1df0827c874e50b8b035c80100c76340a3f4733. 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/FR92U1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628060f69de9b8d911e42b35976e6fe3b9679bfdc236afd2d85deab89a890ee4. 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/FR4EO2000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b2a6f0bdb96582d3e98c5f4584d035db9cca9a07109493b243447bfdb03a36. 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/FR4EO2000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2642659d242bc81867e451253e55e2cadd6efdb56c127f5a8e64a3871f9d9b4. 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/FR4EO2000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03426c48f2f1352037dfe182cea5c792e378d79245af293cf785403a57981511. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/FR4EO2000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154e4d39a77a4a864db39d1fd05bf27ec34e14548a38289edc903eba4acae0d8. 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/FR4EO2000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ff35b4adbe0dd8321f79396faa9b46c7eec58e96aaa3d0e8e230b7ddb85edd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR4EO2000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd667a29bcf0850c06ce47bb126e7be7cb00157b5b6f2e0943a18f87827cfac03. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR4EO2000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe089251a870d2fd6a1efa013d240e97bb36679fac0aa773a8701e81ad06cf9e7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR4EO2000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffe3baf852f92eaedc9d279e6e316d37de4f81099c78d0c4a8578a33fc1c3af. 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/FR4EO2000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb66a876fc80653f5da74b5491b1949d48b306c52e9027e22bff8447b27ac7ab. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FR4EO2000115.