Pierre-Mathieu Vilmet (; born September 7, 1964), professionally known as Pierpoljak (), is a French reggae and pop singer. Biography Pierre Vilmet was born in Paris and grew up in the Parisian subur
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 0xddf3755124ac94c2d12311dad8238b6a285ef1e88c9ae8ebac2c19164286dad7. 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/bd904046-7af6-4ef6-9da7-0ad6d6f4f5ce.json and https://artists.proofprofile.net/proofs/artist/bd904046-7af6-4ef6-9da7-0ad6d6f4f5ce.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 0x7e9a228980e4d957eaf47e6a8f709e5e9e8d3caf6e650425b9701471f9a53ed5. 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/FRZ019601170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ed4e6a6aaba10439d5ba41a4845752a8afaee05c690569f34fb164c3573238. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:29:43Z), 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/FRZ019601180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307ec82a4b77b6fe2538b496d49a6b1c4baf2a2a3cb1b6fea02bd90552348f9e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ019601540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4869a621e2b68f7b0b0b9499a6356b01c522083825fd0e73f7335e46c94fd884. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FRZ019601250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b2a52dda72c036c6620aef16e63ab8548fdd89817be49261f8424a671ce005. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ019800750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd887ce0166d3d0055edf25ff5e78878b03f183501a913ff314a54fbcec1d063a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRZ019800740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2fe2c57d25649402b4a0693293703ed8edc082cb328739028752d07d994d8b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:26Z), 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/FRZ010001850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2c2b8c77e717f41928a98efba07732994d2a26c274ff9927b954f938b81c3a. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/FRZ010001860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0995fc9a13805afcd514089f8c555b21a71a7a3d5271814af6f95bf5a3def1d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:42:56Z), 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/FRZ010001870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e18aa4d713f4a3673e227d56be7936392c01158a72d455a1f9f81ee8aa1a5dc. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/FRZ010001880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ed4e6a6aaba10439d5ba41a4845752a8afaee05c690569f34fb164c3573238. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:06:39Z), 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/FRZ019601180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e2ca608ea35b9dd170bf86246841c12021113e6f31aa4325c9fb0ec92e3d06. 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/FRZ019601190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05dc9083d7526ee56529e73ba4f4523ddd1239965f1d698d12bca3a2350a928. 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/FRZ019700270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23338bc5248ce8028d513c93f7694ca141799a40c890767ecba167bc13cbe88. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRZ010301810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ab249459d625422ee047fd8eefb7a971a1f0e4c4d95d32bf5a2d6ab93e04b7. 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/FRZ010301840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf34bc5cc336adfca0ec23ab4fd0bc7df53acf9c4dad0d9de6278c1bf9650ba. 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/FRZ010301830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54be3de45d4389fd4fa652a4085864264787343249e52e6256511aebadf9be7. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FRZ010500690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2ab6df6a979ae22e357c98cb78ee2950e7da7532590a4daabb979c101af78c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:22Z), 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/FRZ010501200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db118e7644fb0a105a8b68813761f40c600d6cdcf6b46286ff4e88ba9ced934. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:00:50Z), 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/FRZ010500720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd325d0f3a5a50a40278b29af78180461ca87ff1eee25bbe6f28a385763093bb0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRZ010302870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909dfc7de02c44244372bc94c7dce61a76c4c54f5d16b55b25e76326d30ba610. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRUM70902367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee77a8e2e46a039baf69ca3609ea0d14326d24c848a7f0f6439658a5fbf5810. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:09:41Z), 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/FRZ010500730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a50c3a415195d1a2f3ba68074dbd3ab210d645ee3fedf58141a19135f69486. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/FRZ010302860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d79dbd490a2490e062c07b01d17b398965b43613cdb5f101ae5e80756da276. 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/FRZ010001770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccd8b13fb7475e4a674f32597a1b10fdfab69e8d1a440a32c44594a2bdfaf75. 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/FR7Z81400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6df9cab3c8e6caba8f341344882469d88b308bd94dc1eaa1ae3e6d761812cb. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/FR7Z81400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae6933e032693abc1566ec8fedcfee2e6a9183538a3873ecfd4dff3420819ee. 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/FR7Z81400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f966b42b1297984bff9f39f62e4fc21dace1deaa8a5bda2dedf125808adf51f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR7Z81600180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa42c29a2a7f78d769b07227cc22f6a6e57c4e46b773db92508d1a0101e3f8b2. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:45:10Z), 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/FR7Z81600181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297cbbd1b659d3a80379d3bbef27469695424368e62ecf305438a69d1660a999. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR7Z81600185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c7f74ed51b90f99481974152a7a9883febb11f50df4d9922f902913d9fe8a6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR7Z81600186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde49199aa8b0bf7babe77013c6b71d881e712bfca590a8afc85cf3edb6b8a288. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR7Z81600187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268ed70b8fc8deb4327a05813492aac3f4067a0677ed56f3d1eb521ec3e80de3. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:40:46Z), 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/FR7Z81600188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b50ed9a35d721afc36038783197d74ff847f600fa8a1a2e5528ed9cba1d62. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:25:14Z), 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/FR7Z81600189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af85e1d519303938998367ad2bf04440149f8a3890795595ec1c167c40aa862. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR7Z81600190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4528841542e6b1f6be68d3d9890a6a814df5b4af7feed155d79149a55dd66158. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FR7Z82000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50043094def4a5e6f4dcb6b53f54cae04779adc18bbee6ca12429c14df40d9ed. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR7Z82000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622f2628588a6bb0422ee0d364a66c1a8857dcc08cc942837ed9fa27523e198d. 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/FR7Z82000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4266a084c059787339197b734d980774bc86c7bed70ff25b3c3a9baf63fb3416. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:01:01Z), 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/FR7Z82000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc736bd3f066c3b60da80732fa62de9555a6819965aa885c180fda22f8184ff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRZ019800790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f22ee4fd4e3445b4aa42e3a4443261786ea9ff791c3d0c454aa987b837970d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR7Z81400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1085b88a5d858fa74254c71c6e6e740efe3ae1372edd8a2a88d3a739b250d321. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W11809352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990c9fc5c2019de0bd121be3408a57272ff2a3be2fc0b25c2673a57d3260b754. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ019800800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc736bd3f066c3b60da80732fa62de9555a6819965aa885c180fda22f8184ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ019800790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc736bd3f066c3b60da80732fa62de9555a6819965aa885c180fda22f8184ff. 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/FRZ019800790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7982be1d809e941e0ac200d36d5779c56cf9848d282b50c3b2f92e32d182c88b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W11822307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9015e1c1cf2f7b0db29df3809ac8565f3e2b33fbb9b8f469eb7b2c0269f450. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USVPR2300052.
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