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 0x097eeb525d7d2351ecbfef04f97517edd96149ea751489a4557da7a110ab421e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/539b7caa-a0ba-42b1-a56e-cea184d2911e.json and https://artists.proofprofile.net/proofs/artist/539b7caa-a0ba-42b1-a56e-cea184d2911e.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 0x229603026c459bf7c99acd468ad0d4e0a91df33b5883cea240ca2f7b072f4484. 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/FR9W11305317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dda92f399fd973be13de33caa7b2b4566d07dbc22e8cc916cdcb9350e640a5a. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/FR9W11305318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae419d16ed38f7c856a90aaf07c54daaa01d0fc3994632c85e1256787ae955d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W11305321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc9022c987d6a75a5934aea9975bbd34158b74df99e0704dcb6be2ffff2bef9. 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/FR9W11305319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a6fc07749e1db516342bae6fb1ccd25f9601c904921600497ba7774242dd46. 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/FRZ111600259.
Noir et blanc (en duo avec Catherine Deneuve)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817e9e863f33de01a774144fb41fd95f050ccfdc943491f381be7e4382864f23. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZ111600257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8256fb68731749cea5868f26643ba19526c56881143dde4fef246990d85055. 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/FRZ111600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cb33d983edd96664ab212c2e94a9de4570afe051af820e7cb494a17ee83870. 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/FRZ111700086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817e9e863f33de01a774144fb41fd95f050ccfdc943491f381be7e4382864f23. 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/FRZ111600257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6c6ced54496e077d87755ed9cc43ee5c7b374be562cb49bd35f25937cd84c. 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/FRZ111700087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a6fc07749e1db516342bae6fb1ccd25f9601c904921600497ba7774242dd46. 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/FRZ111600259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b31b00a7a243166150d352f837bea34675680f01730e0126e0b0d527f52345e. 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/FRZ111600252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7857bee26db283387bb99a0f5af316c24667aad986d9850c4982fe2067bfa965. 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/FRZ111600260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d871f9b660556f012f45a8b67fbb3c3f2de3cb589e90ad6ba356b2414bc732e. 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/FRZ111500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf085eefa75e8a2c2016117625a8fa4f1813e657c0150c08b55af2132e4865970. 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/FRZ111600253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf673721253fb4c14f368fae17943f1ab5dafcf7a2b1d5a3b4564740339720f5. 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/FRZ111600255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425eb4d6aeb7fb697fa3b125ba6808036796750b539cd8a213361634993e1473. 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/FRZ111600256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07bbc28d159f30c41574dc9d78ecd777d191fd0059e9bb516198d8d2cbe9a4d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRZ111600263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f6b14a580151e6893436e3947976e8f2594a4f854a8ce80601ba67874b6344. 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/FRZ111600262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf667fd6b3367b52e568e14ce1d3ae23c77178b72f794a3087d86a9de5cfaba00. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRZ041701499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c49065882e4bd5f893d1e7de6f722e8e827673e380ceb52e5100d0ed9d1b68c. 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/FR9W12111783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aa93a14bd95ae5ebb77c70cd19574be95f5447605acfaaf1b6ce3fe47a8e00. 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/FR9W12364314.