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 0xd589e0ef32d5af2f593e9926642828dc5f62e6f907512b3c35ace4c4426c667d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7621cb37-3619-429c-9438-61459e9e95f6.json and https://artists.proofprofile.net/proofs/artist/7621cb37-3619-429c-9438-61459e9e95f6.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 0x964902fcc1a63cfdf75343df3d2fba457f2fb061c6217e1b47b76e6efd39ee27. 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/JPF302400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd935bd4fc1ea906611fc05e1b25b844e4ad78e4cdca99d7442875c3deb574fb1. 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/JPF302300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e6a2359d3cb2ff6676c3f5b921f085b0f4d3f447ce5e1dbd244bc334f2242d. 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/JPF302400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc044c23e92e10c66bfcaf0975c27877a49256419df691440567349c4e9f8df. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/JPF302400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd662ee53aa4a566da4496c0d654915aa2208fcaa4791d194e8f02d2844e3a301. 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/JPF301900198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de2dd0c8d99ca5dfa04e41c6345c232793b2c12d91d016c2d97e7c6184e31e7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPF301900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb667f3d7f7e6322e9b0a513621a9c46d265b48c9cabdc0a6d07c9a8c416faa5c. 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/JPF301900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd0f29b2d15621d960b838d6666257237e7f795186a660ff1cd52be2c09a450. 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/JPF301500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8875b7324d7430ed5dc0d5fc51921ff3022cb75f924c5882f751b76d06780b. 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/JPF301400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f51cdae01b1d68a6c45990513036e3254b1db150cfb42b7f66fbe3ff09e9f23. 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/JPF301400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e02203f94b7a897a9f33fc88237274912074b2e0680e0545652e7acbef1e2b. 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/JPF301400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd763eaaf59562cdf8775c368e1a8a381987fb951d846155d3589629b45ae44. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPF301400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ebc005379bc186cdca9da2a286d7886d12a4e047492156a1d64f0275800043. 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/JPF301600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef69a4bbe8ad3341c6246adb6a949a0e6d33bfa003cdc44789e7d44b660db593. 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/JPF301600132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981295a2783ede5ce009ae5b5f804916ff2b19ce8ba711ff2ef57b40acec73be. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPF301600134.