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 0xa3aae52d8777d4bb4c9e0736a53c8e4f78dcd9ad2e881155093033909e362685. 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/56de341e-a8c3-4882-b8c9-b23f37a6a58e.json and https://artists.proofprofile.net/proofs/artist/56de341e-a8c3-4882-b8c9-b23f37a6a58e.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 0x8921bf7462e376c137d1a0c967a22c9a5cc4b6ebb3affeaab92bf96aef767412. 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/USA2P2325939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb93229d2f1226144b2fd73ff9ecbe9d3dead0c18e0c9510767f5c271a64f22. 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/USA2P2325941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e0c73962c0e411f53239246f590c517456b042314929c9bce70f0044a3f98a. 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/USA2P2249026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf974b3ef359a24f015a12dcb9d3b955202a1ea2bf66c40256cf16c5fd0b422f8. 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/USA2P2217246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae132c03b2b017ac23c5cf9d1e6470b0dfaee6a57b3975e0f39e1218895f44a. 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/USA2P2208017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a90ab9f1aea25036c8ddd204441db62ceef27d714e58cdec72344dc8321c96. 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/USA2P2325940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd985c85afe3ca5d0189e623e6d0d5a119dc4df3a635d871dbaddb12868e9cd8e. 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/USA2P2217245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb840963709d50825e6d154c2d6131aef744499e25b71edd4b8268eb14036848f. 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/USA2P2325944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc45958023863eda2aec4b0cce16ce11085f13246b02d5ced99510767a54137e. 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/USA2P2325938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223bd1d1b879a6fde1ff264fab85b8ad8d06fb43ff1f0635cc0fcdbd23b9357c. 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/USA2P2325937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ec8c1986de35bb1039afd3a16ec93f465608f76e1549de5a55596f6489d527. 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/USA2P2325942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7653fb56f16e4b83534735811bc31d2e3fef480f579570ad66b9193261b84e. 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/USA2P2147004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddca9db2301a07d961f65ef8a8d44ba8e832ca300b3b8b6a43d9932c74eef8b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USA2P2325943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a10d50fce66b4818c47ee18e049eec2a3bb6394005fabc768fb1e9a5ed363db. 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/QM6N22428677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8247635f854181c433772c6398924ae038670123d34b2b47279ab920bcae7224. 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/USA2P2359837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a90ab9f1aea25036c8ddd204441db62ceef27d714e58cdec72344dc8321c96. 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/USA2P2325940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e0c73962c0e411f53239246f590c517456b042314929c9bce70f0044a3f98a. 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/USA2P2249026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf974b3ef359a24f015a12dcb9d3b955202a1ea2bf66c40256cf16c5fd0b422f8. 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/USA2P2217246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae132c03b2b017ac23c5cf9d1e6470b0dfaee6a57b3975e0f39e1218895f44a. 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/USA2P2208017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd985c85afe3ca5d0189e623e6d0d5a119dc4df3a635d871dbaddb12868e9cd8e. 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/USA2P2217245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7653fb56f16e4b83534735811bc31d2e3fef480f579570ad66b9193261b84e. 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/USA2P2147004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae132c03b2b017ac23c5cf9d1e6470b0dfaee6a57b3975e0f39e1218895f44a. 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/USA2P2208017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7653fb56f16e4b83534735811bc31d2e3fef480f579570ad66b9193261b84e. 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/USA2P2147004.