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 0x510c4af14f505bc4c381c757b4b114a21dc7c2418e24f6b51aafc316c8723487. 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/8a7d8a5f-320b-4500-97ff-c3315eeb202a.json and https://artists.proofprofile.net/proofs/artist/8a7d8a5f-320b-4500-97ff-c3315eeb202a.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 0xe90bc883b6ee06bee51ca72c576d5115cce51149f9b59c2cffbd85a225cb9e96. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FR6V81431327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5cbc423c1215ae578e5d80ccd80fcc3d87b477c9dab1e1409bd9eb5fba6a4e. 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/FR0U91203234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d253b826ea716372566f2c6f261452e613bd4eede7e83de185a527cfedb6bb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR0U91203235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0eb9fdb0edc985e235b9d4a668b9530f7f4072c4c18cbac68ddfd7e2ba8bb2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR0U91203236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8917136823d34fdb8d181d104879027f7c4f3437138582133189bd3ea4941a55. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FR0U91203237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99baffffd0947bf4d07f49f3cf7d2b6bd72a7511a6cff4808432d7815b469af. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR0U91203238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6f6a6a35be85a5bf3aab606ecea1b1c57c1b47a38abb99d9d6ea790798333e. 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/FR0U91203239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a02685f923649e4f38440a5ea30ab691ee9c46d26bd50f8490458b26f274da0. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FR0U91203240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fc5a728711b22b4f3340e0cc485773c32ff37b0d1b42df1a78bbe11e367320. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR0U91203241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab583eca6c6ef0513a4117dfc5b9663d8d46b0ef2573da3e8cd99ff4a1125838. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR0U91203242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0dd800ca3024702cdb871246268ea2c300a8a59bdac9ab763998e3c5f5e66d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FR0U91203243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a82e7485436198c6960e2a1f3ec2c1b7af96d06b77dc024ff6623f37b03e67. 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/FR0U91203244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3687dce204c5c13ef5a6d7357343067344a3ea688880c231fcfcdb250208d090. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FR0U91203245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa58712ba9f55393d53e612128352a49841f94e678784f539cca51f38d7cfea0. 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/FR0U91203246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc35880925a56b5ecd536e7ac42c16b2f9b831868a33a66a43b7dd11ee692903. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR0U91203247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29a41ecc37e893a30a8e3865110750542972478e393eb3d364113f3b9d137c6. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FR0U91203248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757c9155518ba462e49515e6d7faf08717846c6b17a7409fe96844b5a33cc52e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/CH6541675992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4c379c7675522fdc1e271587dd94f526cadcb064f8ccd093b661796c1a9307. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/CH6541671494.
En Roue Libre (feat. ATK, Gwenzel, Fayçal & Tupan) [Cuts by Dj Venum]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efc290d0622d72461170135024c3da321afd2a84381af36bb95c043765624ba. 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/FRPI32200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a701839f0f00d548cf1cd5e68423c9e73545f232b5a2ff37e4dde4fc96510c2. 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/FR1MP1500510.