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 0x9c31f338e33a6570e60edb35692c8d79398e10abfe35a691e28b43384d466e6c. 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/af657986-ea55-4980-a2df-8c64ef26bf20.json and https://artists.proofprofile.net/proofs/artist/af657986-ea55-4980-a2df-8c64ef26bf20.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 0x746d05cdb6b7fb4268b967c74e3d77d5db06cebb2dd20f9d9bcee177ec648f5d. 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/TCACS1667849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2efb7b7667d7fa4d1476e2b2a25c7a67a5935ee525f51580b430b1cf7d3a6d. 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/TCACS1667850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d396a95503ae9f4d800c6fbd8675f37ef0a3ecfe533061b8f59f88ab19c6dd0. 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/TCADJ1757937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907d903214b423c726ebf7cba6951fd57e7ccc2e02b81c557f877c8772a39ab9. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCADR1808193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5d4d268cc3e46b0d2f9f5d336637cdaa96e5c826e7ddac532a12eb11b0546c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAEC1995115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eebf43918c327aa9591f456121cd62da3d12de51e4edfb37295e2126ac269e9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAEJ1936215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3fc8f9ac6ef328c1ab01b8cc9e57d1620834187703d69fb106dd10fa3f26aa. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:55:45Z), 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/TCAER2050102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694485a2402aeb5fbd5de03956f8cf1781230a8826fbc6a3c58ec0d606c2a555. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZDA62035869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc488b61626dc76c707a79ff910cb4de38d5aa7ac78135f05aa6dbadcea22df. 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/QZNWU2187811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6ecc7b430d19e8cc5224fce608fb29a8cc705ccd0b8e9ab084111cabd1c90f. 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/QZES52262312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe579c9e70c84acc2d587c117e44163bc47217c979a1c0cbb2527edf11065a83. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNC2268523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548d9f909f28711b04a66829b60c76fbac5c421da1e64b8edf67e2c69255948a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:53:43Z), 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/QZK6P2284772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a0777d11d5505a44889457cdc63b9a90bda6794cb3fd168017d5ab3a4fcfb5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:29:39Z), 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/QZK6P2286675.
Cute Without the 'E' (Cut From the Team)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa35667daab160ee9c1868d18436fac18343706870781069539b393d04d6a4c. 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/TCJPW2387132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bb66caa57e942091353f56df579873849bb63a8a6d36473fb575c808a194c5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA2P2320639.