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 0x2b363545d8032d70b061ade901f296758f1c39740e805bc96933c306f80cd380. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7258cd83-bb63-4425-ba0c-af07a78aaccd.json and https://artists.proofprofile.net/proofs/artist/7258cd83-bb63-4425-ba0c-af07a78aaccd.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 0xd037334164ac47efcadeab0fad8657a4a960e1a652b41194b7499d532bdb0590. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR8Y72200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bcb8156d9c89169c1ef6c5a9f32e74af23c2bbea47e6ff7533c972e6007bea. 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/FR8Y72100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf6c70ba2ac1c56c1ccc77eaa959ad507b50ad00811b85fdca075371bd4182a. 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/FR8Y72200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f2f92f9a83449f697636b6f276171d9d4dd1974ee375db94bf6fd6634ebfaf. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FR8Y72200174.
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 0xc7bf347dddb1fc1ee64eb8a27c1fc59852148d5e408080cc4332c0eee3067e98. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR8Y72200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81710ab74850d11f2f662e681f9ca1b1f33911b16ad5fb2dcedd58765724ef9a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FR8Y72200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8de4c0109c9e935f44a2301a4d2cfa5682d9c3114001d8db58e81f4ad8e06c6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR8Y72200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7682d1c15b77d3864b316248023eedf0e3916c7cb8f1424b402d4f21e79eb553. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR8Y72200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dcf4a9d854d4667164a4f44be40115fca61698b64170f47f5f37ac1a97cc2a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FR8Y72200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45011959e124b76c0035f1da2042de29859641a0ac6a2fa986426f7ab0aa70de. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FR8Y72200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12843e7d2cb9788f366fd1fc7d9366188e7ea7b0f7c0f93bc050adfae637788. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/FR8Y72200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90222e1f99ffade89fa796a79e67409f176d2ff90c5f08d7e1e7be41a74e8417. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FR8Y72200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf586b4cbc1dab240ded26166af925ed5a463f4752491b3fde53134fcd2ec5c15. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR8Y72200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c97bdcad586e584e751782cea8cd94414a0445e80ac854e7068e4ace0507cc. 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/FR5R02314459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c15552594c79e60620d300a7aa2675498ade2a736adedcefd32d594c992dd6. 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/FR8Y72200497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf013bcaf4508e8338c2077d962469ddf3608d8ae8315f95a6bc51900e140e2f0. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR8Y72100650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c599e21bf4ea0e1794f54691a1069440a9534a9671459ee705d47b973574f3. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FR8Y72100652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d45aa82aa6c18b96c3ba716890b3c30887a7a777bff6b3885201f67841105de. 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/FR8Y72100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219ff7ac979c2c6144ff042ce1201f82484fcf393342e9ff5bb08c43f94b058f. 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/FR8Y72000140.
Les potes (feat. Vincent Duteuil & Le Cha) (Acoustique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c235fb7979bfee59546a1582060db2d3789d9b26269a4a0215fd19251c2029. 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/FR8Y72000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5032fbca877d8e22e22daa5d0cb8cb03c75fc7d32f92bc0d22549c12ae4d3ca3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR8Y72000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11882cfd0098a92af922e1e6a88c413c253dae6610824fae3b8d9bc4592f702d. 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/FR8Y71900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d5d27c5f74644ff1d287ea3ea1066d140ddc2ad08cf0a0da63e97cf7055122. 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/FR8Y71900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b446a445c1a9526dedb2aabf1cf14ff3693cf0db15e43a966b50fe2bac46e5. 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/FR8Y71900127.