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 0xfe206e47d73ee12a9b991a1d65c310701edb3057e9fd36a9fd4cda7b2cc829d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a334e40-0800-4aa1-9666-a071ba406259.json and https://artists.proofprofile.net/proofs/artist/6a334e40-0800-4aa1-9666-a071ba406259.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88b189ade9536c79137e8dfaed9faef0fb9649eb1a9a8dc2b9a77f93ba5735e. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/FR0O70804296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5caf98105f1d1c7929b40cd352d203b918adad105ef32308ab7ec5320317cb5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR0O70804298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dc943864ccb0e490a4ac63a0156468e611fd6ee5c08d3aa01ad8ee52731049. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR0O70804274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64263f9f99e05dedea86d28dd2a03473513623d4743caa602288889bfba7910d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:59Z), 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/FR0O70804275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f84619611bf702c7c5e8d2f4c2bf0c7459f1f05e6d747a14ae3482244fcdfa2. 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/FR0O70804276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddd449bc3cffb7dd657272ccca78623b8f685f3754e9049c9f97649831f3944. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FR0O70804278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c43fe480b1462e305cc767a4c74c14bd66b20477103308b65f504657c0ab6c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR0O70804314.
La colère de la vie (Chansons des années 89 à 93)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e8f9f812f8c91acb0509c1f47cc0bb0599f04de365520ec3ba0e856ed46e7c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR43D1500720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2454789a7eb8dee0647ce8a99567e7aa89a1232cc537ae12d42f6dcb497599f. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/FR43D1500542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe684f84896666e38d12e630a93cf22d8de38ef2a19d612cced1bd67e4b58d9f2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:07:14Z), 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/FR43D1500543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3e1dd693a8d6eb029d1f1bd64ad2a4b56a3e1b403d6dcc0346396156c18d9a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CH6541775655.
Le cœur a ses raisons que la raison ignore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47937fb083866714e8f9513cc7817dc2a35ad44585bb4fa00623850238f8289. 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/CH6542015671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6555879341386a6905e2249c05b59281196ad3e7ed4804fb962d946a79f5854d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CH6542015663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110b9d2c78bd0e8a585c339ec1232b27ff61ea0bd880cd040f6fd381b55c051b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:40:17Z), 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/CH6542015661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ff72e70e9fdbdf0a0a00cac62eec15f31fced0a8db1ac3ddef342603d8f1ba. 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/DE1KS2506582.