1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1952cf5836e961eb3afb733b8627799f1462278d1fa75fdb0ea398cae17742a0. 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/49582176-c602-4e8b-9466-32004fd2d20c.json and https://artists.proofprofile.net/proofs/artist/49582176-c602-4e8b-9466-32004fd2d20c.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 → block OTSBitcoinBlock must exist at that height 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 0xa53246e0494f8f4ed431e4229c5a1afde98cc8fa987c2a22eec5ce5f18e81501. 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/CAU111015675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704c4dc216b8747c234f075975acebd48364e301999245d38b420e4561bdfcb6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAU110415322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1322843cca5a9738f23f3285b79989997b8d2e91c3a78a93dc6f36ecb1ba231. 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/CAU111015680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330c0b28547682a29fd839357e7180f08ae9beb169f36ae7adff53bed7e029cb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAU111015685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a86a1295678654c5f8bddf0f8215c288ddd983ffaaa91eb3cdec53c05a6374a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:04Z), 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/CAU111015701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451ae51511a964820e63dabecc2747a28ac2cd642e6c0419b39dfa8cc258c0a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAU111015726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a93f5f1378e1e41376eeaa29532873c2e3ad0e151d77c2fe0a53a3f79553752. 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/CA4JS1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383a2dbbd06321a3665a5c95e5ad47c8d407f44dac1b3e5c6f38deb6c3ce20a8. 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/CA4JS1630001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c4a9506f06470613dc13b667fff274b62f3048db20ab82cffd16838fa33f92. 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/CA4JS1630011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68822579ecfa577713ecd5bf976626c2e95233be7cfbaab45e1b4a514d92ffd7. 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/CA4JS1630012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1940f2f15c56385de9c903ab32e731ac1f4058559d12746c609d3d736ef391a2. 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/CALAT1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a332422ab2afc83fc80fac3c265b80c39f721574239b080b864231258f54b29. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:49Z), 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/CA4JS2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4710d0409f855dd6d9fbf8ccf4bf07533bfba42912501e020165f39335d5970. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:55:26Z), 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/CA4JS2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbef3a135c772de085d4d8d6bb9cc10530d65f1927d2cdf6afeb822bbf585202. 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/CA4JS2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8299d0762b50f28e1bcb3b4eb6233ab0935794e217bcaf8826f12398c5db51cc. 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/CA4JS2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd3064e4c438f6435521dbcbacc0d3b7285ca5a76af260131c1fe00412fbf79. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CA4JS2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdcb24fe83014fed44c655b78de43d206e9ff31b38a952a74c2bfad7eb8945a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:53:03Z), 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/CA4JS2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717230973d42086325ff640a223da30796e330b686f85fa79fe0d36a4e6ea278. 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/CA4JS2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435b3383eabaac1c9a675efae5486a58f8e0f65595173cea2e7234f284bb3585. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA4JS2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b406fa90e764f734c182ac199370aa638aefa6925e862f9c019f8fee09b4e0. 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/CAI600689704.
Quand le soleil dit bonjour aux montagnes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6031fa03e3c763c5f281fc7a731502d9c51260d4c3a59014d6828a28484d60. 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/CAI600689714.