François-Marie Arouet (; 21 November 169430 May 1778), known by his pen name Voltaire (,"Voltaire". Random House Webster's Unabridged Dictionary. ; ), was a French Enlightenment writer, philosopher (p
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 0xb7dc214c30aaab9ed3353604c7c534a46b476d981849ac5d324d40b43508bfd9. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bffdf494-4bf5-4484-af39-9997c112ad07.json and https://artists.proofprofile.net/proofs/artist/bffdf494-4bf5-4484-af39-9997c112ad07.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 0x2a9006abfe62de36d365fbff4e837ce4bd42ae2a1568c44a91d999a6f1878a6f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLZ9U2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92a74124d0414582432bc12de2769d2bcafede4b064868e183ed8cebccc52db. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLZ9U2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2880521282f1d1c32edffddaec3a4ee341e7265822bb2f084f1562dbf1dab6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/NLZ9U2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1063c7833dfe45af4298577f74df98f6fe8cbcf2a47093fc1c16c75a88611fb4. 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/NLZ9U2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85df052648e271be15e2b6cc6c8019cddd1708945ddeab7dc95a55c25701fcc. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/NLZ9U2500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d051856e8163a3098b8fbc965cfc8a0c1b2a0df38c7c4eb3477c1d263275feb. 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/NLZ9U2500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db670288a6ae1567c024c65cb4f227d0c2f52ab43328e9a204d1e0ca7dd611f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/NLZ9U2500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d095dd650f2777becdb9c7ba73a03929e1d56deeb4ecfa98d750239d2893eb6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:44Z), 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/NLZ9U2500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48d3f9898d1dece7321df6d98bfb86c894330c6592478cf7914144578515ffe. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:12Z), 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/NLZ9U2500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9545bf9958ddb0e2157fc712431ef17c210bf37fccba994362d1cd624e9a0e. 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/NLZ9U2500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d87d9616d7b2958056aae3bbbc98e774f055e01b11e385c000fbfacf8754f51. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLZ9U2500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9e0d427348ae3bf6639110bfeffddb096a7a0f2923a72c166e65f75b5d0248. 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/NLZ9U2500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30201516bca5d7f7c87297a8056a740b0a5be385693c18beae2fcb82bb0bed3c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:57Z), 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/NLZ9U2500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cbf77bc7041ad36f98dd379efd5fffd523a7bd3a68f15a4c5344848000f181. 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/NLZ9U2500040.
Tales from the Real World - Voltaire Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b7cb108e1a670c9e4dd7a7a3d48f964ae3abd599846e45bfce8c83fde046f7. 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/NLZ9U2300027.