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 0xe350e07b2bd716b0c4b0f530cd631347fed7487ffdd9950bf7c3ac13fa1cc2be. 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/8600ec02-dc07-41c0-b169-5022e2a74722.json and https://artists.proofprofile.net/proofs/artist/8600ec02-dc07-41c0-b169-5022e2a74722.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 0xff50b0a2c9c85046c318e619356ded16111961317233732c87893c9067e0fc79. 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/TCAFX2173303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac45c02c543a257b338c97af6258a85755a4e6972206f7c96e399086a81cb46. 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/TCAFJ2189701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77026029838c5bcd4bc0734db31dba0cbc8b5d7248d640a2dd4f53516c15976b. 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/NOCP42301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f111e58fecb9f0d67ba04ca7df4a6b3a7067dbce7b6d0c683e765ddc9456f0. 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/NOCP42301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceff597c1fbb4fc399fc9441c30b6fe486a0e17dac7d3b0ce8cffa3a17bd03ec. 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/NOCP42301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae94ad713bd50fce69eb9bf8e73041b903a7bdad9f35cb2207714733e70d7a2. 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/NOAJR2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c4967c57029777aa9e8dbc954b6d9a7cd385a2e8ceeec3b23f0c33aeecd316. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGU2335233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c49d4b866b13df6ddb19af6eabd60ed2642f4c96c1cd5302cc7f899615439d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAGO2257828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067b6bf4098f12ad7a70ad963dd5c22581f5523b986c78c3fe27b5af49fa09a4. 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/TCAGN2220716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc014e5246b9c0fc8231daa5cce83ebcea73c8e0299ec8b2dfe2384ed52bc068. 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/TCAGL2277796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0484d855d3546ef46bf06c2ea4012f949cfa68fad9401742c7dec564a91be6ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGK2255684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c961316ef24127631647ebb6dffb5c3df64a775c7554501afc43e1eaf89c11. 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/TCAGF2293236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09751459bf3ba5928f53851a2bebfc9d740d8afefef00083e736cb54a24d1668. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGF2207982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3f9e30f593c688cd7837af2a7f4fc0b18fcf957ac091a7befd42ced8e92d18. 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/TCAGD2224146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb1e57886da02591c7fc0ba380934690df2f88af9cc197181d896792cdcb94d. 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/TCAGB2221474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533b4a64388608a40355d9351b1d1d643723f579ffa10ad9a5ac9a44abcd732d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFZ2253487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f91c3ca2d694df2cd3d5b2ee95c243b387e30f32c78a6f568a0ab789628e703. 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/TCAFW2157396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d128b877e0e0fd4b33389a2b2b0c0ea4a5d1944be5d57c0d3aed1b7f5b6cc4. 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/TCAFU2170878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e16000ac68641074b96279b3fc81fa886f37fa6a886bdf926af365358ed2f3. 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/TCAFT2111416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7f528bb708b71fd8718ec2c6a45b1d11bfc43f2433d7b25a4c690f71060c4d. 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/TCAFP2192551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0816b469db88a162e2b1667c7ba31462ca78863b014953982974ef59b9b0c4d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFO2171131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fae3af02a4d0b9b05e4d6d73082b769034cb08cb5379cf39efc635cd2648814. 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/TCAFO2125645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe9f31172ad252c7e5520726032a870a1d18058633cdbcbd96caa8afa704c9b. 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/QZHN52113568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9aced6c1e945fc0a533a0b48503cc3e6dba0c4b3887444a7233b6456ff0bb7. 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/TCAFN2182180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbc50cf59d5abefa84af44a53ebfdb146605b78f8fa6f63835231a73f1e84e6. 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/TCAFN2149121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea92d6c3f243a8be9b2916021e891365b1c9bc9e71dad605748513a93845f21. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAFM2193862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6a520bed5bc0d94f4767c38feb41bb5ef24966d573aa0429ae076bf0f3c30e. 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/QZFYZ2185078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf377542f78a9f6d666aac89ffd96545d91dcc689479adc50b893014d16d7a8b8. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCAFK2132774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddde730ade794faf23624d3ee7452be1c9e351d594008ea9008796771d25346. 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/TCAFJ2160910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633057787d317acbfc99f2e3cea2b25776184ef1b290dab8089279d1d703c141. 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/TCAFG2063573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78008cfe96e7c0b92188229841768c2d5cd4db3017df86e71586c313036e7ff4. 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/TCAFF2068396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca4a07276c776a6e22eca480cf100c5ad6f83e2ca4144bd82bfc7b9e80137b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEZ2070397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcfc199f2743fb1b2b085840c8ae4f32962338fa21b4f296983a0494b3d3198. 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/TCAEY2008130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b41a6132f222b116358ee37f134b90c96d9fc443cd1694f42c27c84ac6f26. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEU2066391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d7e24cb1e403e90d713bf02780e54632bd76a7740c83b29d94fcdd58bc9f1b. 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/TCAET2082828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb75a0b70a1b0d8467e9201b06181b1521388ef9cd485c6a5dcf2523217db343. 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/TCAES2096833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7694580672865f501d7b40803d271d5e92ddd9bab2115a4b5c0dc26d6b9b60c. 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/TCAES2043155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249e10e92c1a0c0294c4f8bdd43c55082d29970905ae327be3e36691996cc8c7. 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/TCAES2008261.