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 0xf8392094de7b5a89a332aca4aa54404778ae432b5386d7f3e6bfefe3996de855. 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/675e648d-5632-42d2-b257-d8d6dffbe02f.json and https://artists.proofprofile.net/proofs/artist/675e648d-5632-42d2-b257-d8d6dffbe02f.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 0xe1a7b719767a243a2c87e9c3170530993f204fbf0cfba196b006345b644f79c0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PTNS19700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b36bae9284d154b5cbf0b8da147e697cf143f6cd59f4e701eaacb57557a421c. 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/PTNS19700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7700cb9d0ccce7d1dd153a91167da12e3cc14b85ba8b0bb0f542b460d30fdb0. 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/PTNS19700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2844d0f53c610e8c5e70a67c39d9533a4068ea094d772acb879382e725761837. 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/PTNS19700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247ee88f0b859fb7e759f268fe2254178ba7871fc9b3a2799b0f53e4d0c502b3. 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/PTNS19700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48896568c651ec8e6910f0ec6b6634aeaf33f1ce1c451737987243498fb1aa17. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/PTNS19700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5b5bf136c489bfcf9f0964c716bfa388749349e93f369231a9075dfb99a13f. 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/PTNS19700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc5ccf82018450899fd06ccce53ec97d74d71570fb3b5bd646286c615668583. 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/PTNS19700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82be9b73a97534f475bd5c3810e0be22dfe12cad69d775c52981d764586ccb57. 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/PTNS19700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f125816e9776ec17593faa8f0841380dfb2182567d2b4295449e3a029089034. 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/PTNS19700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d14429fd6f8c2cb73c5de8d9708751fa4d31febc9670a8999ea3fbee66f52dd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PTNS10000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc11cabbadda57c3c045d1a00587b0312f5ef61eadb4f0c37a937dafa8021796. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:55:47Z), 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/PTNS10000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac71807622331b46bd95bb1d28dd484d5f4ec105e56abea78e06c9d2aa9fe5ef. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PTNS10200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d38903d0a4eccf5df293b94fd9970be83b24c5721da0bc10d9de6d1982b2af0. 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/PTNS10200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dedcc98376af0600dd9603b9266298725f7fbc4d008da6beae4d55f2558ad37. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:48:00Z), 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/PTMD10401006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a19243152c438a38cc321f2dc0b43a5a07cb6bcb0aaf3133671b3b2246c1e4e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:02Z), 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/PTMD10401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e70639b7b15a93b80efbe9360705260d6ee25816e262573e26072ca2b71051c. 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/PTMD10403102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef72d0ec17f4c1ba16d735116e8cceabc4300a47b8402e3cbed0b38510ca691. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PTMD10403104.