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 0x4db8c6242921de8cb7a690587993a5ce1755fd0adc0a2a1a3cbb34808b8e2038. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e26189a-ba82-47de-9be7-0d6547033c50.json and https://artists.proofprofile.net/proofs/artist/9e26189a-ba82-47de-9be7-0d6547033c50.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 0xb585d6594bb46ab3266eec753dce71e7fb787cdac627d5b4570ebd95e3a291f0. 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/QZMEQ2341030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75f9c484c81cfe548915c20245d84d1ae8330c0c16be1426d126714c061ea5d. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZMEQ2341031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb94484d6cc7eea35ccba2959fa7070ce4a30a3073f9bbf4370c2a5288a63105. 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/GX89G2226615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6392b90af4c26eccb35d17e5fc0e015c7209ff2e4f4c4bd84f60c22c70e3bdf8. 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/GX5MX2255639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacda4a013f5bbca39ad7eb771d77eb808bdf262322cfd82088294057f6bb71a7. 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/GX5MX2205428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7e734bf281ce6226f59eae20650afaa975206e087d8684bb115fc9c3e55dc5. 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/QZHN72456278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8217078deed3f2150a471a5014bf6b8e3171056ef13ca85e2ea47d69f5e57a. 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/QZHN72454151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce992072c7bb31353be8eb35f7fac942c624facc0a4a0dfb315f846bf9433ed4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZS632357197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3d9b133a0cb302c5bedfebc68bc1348ef8afae9156683b01c49336d4d3cd88. 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/USDY42435338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11fb4774992166b1c7b31c5acad5e6523c3f9e22864f824884c3dc9076b1066. 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/USDY42435340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95be955dfb509c31d0fa12a1295a8a03c6a720927e6f7267f8601e29335a9ee. 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/USDY42435344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c1cae225a29094bb5f4347f8d955dba028518226d45f6eb7723291c13e0556. 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/USDY42435345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900f1563b07b26866d8915895a7f5e0a2224ea16b0f37b58a5d717885a2587fa. 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/USDY42435347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950f302bf08e33902b09b7261bf25eaaa2d851f48c059a0aabad7b2a5e4264ca. 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/USDY42435353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3dbe3e217fb32d6170dfff18f7682fc18a77c6d3bf475d16682e098ee9bb58. 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/NOHLX2348010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaecfbedde6e793d854a2f4359acd0b12bae515079da0077eb2d14967070250. 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/NOHLX2448021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94befdb62d14177176ee7e2775794c8ebc1015e9e167cf89f6e7a366ec7584a2. 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/GX8KD2221492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb084382bbff14c1f904ddf3d6cbbbda120461f51e61cd3447f4c943e6608a4. 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/GX8KD2221503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148be0acb7bf5d743ddabab84ad033353b4a11edd1ede324373d729b96760e0c. 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/GX8KD2218855.