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 0xedb77057b4f8e8854b6be9bf179021462cb1c59cec68b9ee7e0f7fb0c2b36a6a. 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/4c1e0096-f843-4e2b-a9ec-009eb8ec379a.json and https://artists.proofprofile.net/proofs/artist/4c1e0096-f843-4e2b-a9ec-009eb8ec379a.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 0x1aac84797d5198b59314c85b65a384059ae42b0b510044bb53b8b2f389c37746. 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/IDA141707983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02a8ddedbe998a34cb65789481084744181e0854aaec10f237249b25a9eb72a. 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/IDA141701043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d148e16617828f72f577fdde681d154aefb369a056a41619587927d124d9a0. 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/IDA141704950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47c7e3d733185b5637bce5816ea404ba30bdeffd0993f6ce17c0745a7366ea5. 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/IDA141707343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba2ade9ed94281c6f14ac6d51025fed5868121274bd212d450136e749284222. 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/IDA141706900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde82dea975b0820b58b7b2146ea851e8683fdc421ba6aab5c52408e603e0355a. 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/IDA141800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffaa7188c6c6f95c9da09fa0503e9d570dcf75018f9bcf41d185fd0bbbed385. 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/IDA141801183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf5ed60f52837f61417ecb61f43010af7d45127916b66baedf73577079370a8. 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/IDA141708389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4462b4252e50088c9331485e0153cbb74202a9215686c03c23f639ea2338bd. 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/BGA261590801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3021c5ab788c7094a4037a1499b39fc9950e9eee50f28752cf6e9ad7a42ae51d. 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/BGA261590802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8a515834918a450ad840b23e69f69552953922eea603e49d35bb84ff5375f9. 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/BGA261590803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e11d9f1d14b74f28627b1abeb4d23a17a94f301a57a7f0e9acf2172e9481d1c. 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/BGA261590804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a8db119fd7153da4ea56d6a08098d7d780b97f4d94cfdb415b7f741af30718. 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/BGA261590805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e05cd0e690618b794af46ec0efad1a86a305cfa8345cce929431be66ac4b07a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BGA261590806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75109d5f64cf6f6f55185a6b60c211551d537d0b79ed94ea6d07d010f3d5db9. 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/BGA261590807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ca22f19865dae294a64b7a67b5367c16aec3d5524eafff3223b83eceeab715. 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/BGA261590808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18889ba1017e63699b91a21922aa940aeaf2117a5b58941844df6c7121b4dcf. 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/BGA261590809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf5ed60f52837f61417ecb61f43010af7d45127916b66baedf73577079370a8. 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/IDA141708389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47c7e3d733185b5637bce5816ea404ba30bdeffd0993f6ce17c0745a7366ea5. 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/IDA141707343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d148e16617828f72f577fdde681d154aefb369a056a41619587927d124d9a0. 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/IDA141704950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02a8ddedbe998a34cb65789481084744181e0854aaec10f237249b25a9eb72a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/IDA141701043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4462b4252e50088c9331485e0153cbb74202a9215686c03c23f639ea2338bd. 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/BGA261590801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75109d5f64cf6f6f55185a6b60c211551d537d0b79ed94ea6d07d010f3d5db9. 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/BGA261590807.