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 0x8612a9834f3928670c9e98fa951fc8b361e799b07def8059e35eaed3a83edbc5. 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/5cef6e2e-0c5f-43a1-99fa-80fd1d70c4ac.json and https://artists.proofprofile.net/proofs/artist/5cef6e2e-0c5f-43a1-99fa-80fd1d70c4ac.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 0xc8932ff0905894ad3626249fcaa97a126108c61c79783a3e73e1ffd1f6ca01ea. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR9W11317688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2dedc091e5127263895b104ad84e577d7efd66c9e54a3936d272546acd74e6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:07Z), 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/FR9W11317687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110e42bea0122a55bb563855599e45ba7501b52e323f5ee093be33b3e76af1b3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR9W11317690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dfb590daa13c664d7f483a7cb27389227b40d99469042117662338371e6752. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR9W11317692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dd00cada000da690a5fc14d33bfa946dbf889f44b18e5575ff99f3a96de333. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR9W11317693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9821edd640209643ab975f10a7e870d5753078be56bddb8f867d3ee38a31ee4f. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:23:48Z), 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/FR9W11623347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c9766d9292cb5eda0a6af5d1a1efd9fba1ca14ee2cc71dabc109c7bd415460. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR9W11623348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94f9fbae442729558c06944564eeac3064d5813782aa0ae3fd49f20e87fb3db. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR9W11623350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19718bdd975c7943ae9fcb6e70d07fffc152d844882888cb22ffa1b0d7ca9521. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:39Z), 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/FR9W11623355.
Live à Montréal (Live au Festival Nuits d'Afrique 2018)
Sans haine, sans armes et sans violence - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a37c8cdcdec82f949d253e88b197653b73866a9b0c13c796632efb203d2acf8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:29:08Z), 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/FR9W11820993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74806677099c41a832b53bd4b4a85d278b059757da431f580c3107f25fbfc5d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9W11821006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85db33a7fca1b23825488e1eb2a8d33ac021887b0c0359ebb2992f61ce6f8c9. 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/FR9W12018505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3a8ed80fba3281d707c038aeb9c2911af3612f4c07a7972c21929d9b941262. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:49:10Z), 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/FR9W12018507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab96bc1695425f21445265bee7f79a56a55cc141f5d96c049730dc893ad4ef7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:03Z), 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/FR9W12010024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732bdd58f4f3e74646f2c4b6de3c8b50a6549e03dcacddc483025be4c6ff248e. 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/FR9W12018515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf74a5b90a00d8bb3dc6eccddb3aceba6cb4c55e7bd127a3e402be06948112a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9W12018518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8093b786f1caa9579176e6cf2216c1cfaf2d3835353954a0ef7bec2fff416310. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W12039783.
Dis-leur que l'on s'aime, dis-leur que l'on sème
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde80f3cd42c60f6f2c0ce6056ff3f7f5308bb88e548bfff56f6c977130053105. 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/FR9HK2101011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cd4907c36563caf61fe615fab257d9fd297b5cff6bb4920a8f8d717a163e9d. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/FR9HK2101013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744348687490cceb24929990213477e13b1ce77a8d3c439a54637b20f1eff6be. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRY432200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060599443fe295f1009b1e25ca19fd2343b900cdd3d5f271ab8fe6b7972f2719. 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/FRY432200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c879923c02a4ec453c49450a2704efefabc5c3a4ab97f82015d6ec292f13e81. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FRY432200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cc669970231502929f8fd8c1ed26a029013c25c2a2bdd316ccbffb7bae4a43. 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/FRY432201250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b4c4d78b3f89257b2d869abe0f81dbe451c1ec0b92d174055b9cda92aab5d4. 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/FRY432200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711f75e4ae1311849e0b437fcbeae6f9b30564e860449550ff3ad246d7be5423. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR9HK2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc5138ba25df5b5062cef816ab1aae90eab75ba80ab5f25e5e7ae93e84191f2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:21Z), 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/FR9HK2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8d1cfbbfbf00e67b066a125061eb2c2875463c2f80149a2a3295704f11066b. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/FR9HK2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5375477d1666c95ee172a06a036f54fc7dfbdd5a79a0e200032e8c4d914aa3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9HK2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e082ce0ebfc1eaf099387a831284e3e64d12e4194fd21ffb658c7815926431. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:42Z), 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/FR9HK2400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d285fa9d9f1573e60ae2d39e9b6521ae99c18c33dab3dd6799cecfb1f9ea038. 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/FR9HK2400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e26296c32d1ae9fb129ce7b3c1ad72c975469f5468730029e0b7600cee01581. 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/FRP402100120.