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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735ac7be3ba1ce586b0825b2702af9d243052c5b920954b73aa6aec4cab5c9a4. 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/3970a4f2-ac9b-46e5-8ed1-9807e175cd04.json and https://artists.proofprofile.net/proofs/artist/3970a4f2-ac9b-46e5-8ed1-9807e175cd04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Petite pièce pour un inconnu (feat. Vincent Ségal)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985c6ac6d579bdf2b71a29a78524bc4785a7e5b75eb1b0be617bd21a2af948cc. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:48Z), 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/FR2W61600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc142ba8057f1123208b2115e05535931e4b33be213eb47ece4fb0d9d3cf7e9e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FR2W62000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bf97ff149bed2b219ea002b6d8b74e93c728678f9d19af116d736c18d0e24b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2W62000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15c1e802fbd4c2d34a4fea72c9f2b3437cf0b62982ef3885653f7043fc35408. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FR2W62100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf962ba7592c20911e649dddd597c1b3c85368a75de0a4df9a5652a968066c338. 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/FR2W62100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66057df43a6b1a4eaeba4de17595e2014c33f9e88c4d9db6952f5fe92327e774. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FR2W62100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caed185e09ce864c959c5dd0a983880366d67309c5c791c6e85865c1b19554a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/FR2W62100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f4369440dd84c6ff1d07e9ce2747470ac2b79f6dac6c02086777065dfcda4c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR2W62100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b91fe9b3393444bd66854618ceeeeb75cacd8524101722fe01fec5492340468. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/FR2W62100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c2339942313bba5cd2acc6010ffba01784892eab0d23ae08c4f8a7679624a0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:47Z), 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/FR2W62100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830b4afe425584eaaf8dd40df957b809a6d8496e47862c49d9cc9a98495ebe93. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR2W62100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d3ce07333a2876fc40527289d71edbd6d14b5248f2c58b4fb02dafa9b429e7. 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/FR2W62100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd98c1d6adf12c0a94d8a9a42d32743b820f13a3da384341046c1014ec641c4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/FR2W62400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa577acd866d3f032f8c70c7e92de0318caf4b14d4ce35e50332c52d41e30b6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR2W62400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9748e39f06868960aa6526229ca8d78dd614d6f8d803dcfb5099a16b8a60bf4c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:34:11Z), 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/FR2W62400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3226106b812cfa753a0c8db9d58287e3a6047977d1ebf0d2be187463e3ed8fbf. 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/FR2W62400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bab3d5ab656e257cb7f6804171e55329598c185d383f249eca9a6f881d323fb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR2W62400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93081f5fcbce7d243704e85454906dbb690b94ac35e025a466fc3da11f2806b6. 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/FR2W62400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d61546d233c3827e9081b06488ff30cba4d0c05b8325b419a16d8a27d0f143. 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/FR2W62400048.