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 0xf1fe643f2c26aa69d84e0348d08ce858e1cc37ff74b77195b11b890318b6650d. 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/bb65e575-5bf4-472e-8d38-f1cb92af498f.json and https://artists.proofprofile.net/proofs/artist/bb65e575-5bf4-472e-8d38-f1cb92af498f.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 0xa3057e00145aee403a2f2e2ed01c6b5b4f856a84a6850b4b5186101d13f573b5. 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/QZFZ22460887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65afe4a0220b0fc00c2551cfdae5721444de6c7dbd2d2f6f1d6599beb2cc25d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ42412927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfcdaab38e1d606c58380c3631b18ca9649499e9ecd48890aa9cd61449b540f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA42470774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe883ba7b91d0dd35fae6c4a7755d31f4b8651a115db9dad371e14384660e0f31. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:41Z), 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/QZMEQ2403837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02459450f974b37e1b3e21376ac6d807882086b66cc01cac6e3081c5eb8d5f9e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZNWS2470735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6833b16b79e4e925d1bef16fbc4a407e2d48cbf81335fbdfbeece856f2cd8a. 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/QZS7J2510930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fdd67d0977a98cde6ad9b55f4267eca33bbb954fe349db187ba03a84e0f6d4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZPLR2476942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3ddc56611456a03edee1b58996631c98fb3e413f76fbcc2902c1035d4e660d. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:44Z), 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/QZTB42455062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aad93f998ce74ba0dcf00e5718a173181f1694a84c50a5a1a1939d69c4fd0ca. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:48Z), 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/QZZ792478399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb7a9978f72956f0d01954e574df7e771a49b52395617598b36d7423c7b27b2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ7W2497600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0c3e7cd216decada9adc7ea327076dbdcc007732e1775b17c62df59df5019d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QT3EZ2433056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cae64f5ea4bac52dea0756acb73c9a6361b0b410c5894463fe1e2fd63783f04. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QT3F42400918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cae64f5ea4bac52dea0756acb73c9a6361b0b410c5894463fe1e2fd63783f04. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QT3F42400918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a93455e43fadc133e7f5111c927f69cc2918bf726cec97647bb81163f171ed. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:02:12Z), 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/SE5BU2535462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69633a6676c56377d5c56afd1d22b7845bf88b081d5329c5d540c5f0d2fe99bd. 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/QZES52520398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bba4cdaf5190ac02b2b5cc7f662fab50675d2ade1bdc820cf1c31cf1d674b1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:49Z), 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/QZES52520399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eb6a4836b188f199a9b5adcde637b6f5f5822a4a6decb22967ef7db9328a05. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZES52520400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b44b6f78eba8535012e48a5b6a4fdcd175f3d77de6472c9eb2f59ab964575b. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZES52520401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc30c165876d982d85e5893bf5e6e40fc72e7b019532f1f27ea5beb9e1564a8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:02Z), 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/FR96X2585261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27287e1d4cae0ce1be36213b8b49964a248042730c54366d645195f5672d4b17. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FR96X2586573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5061b70d58538cecdd3114ae31c4d75f692eacacdcd252be58dfcc0e3790a543. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZS7J2593471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a3a71006f23e5e57cabb70af421721495894be3bfb06ab0f26079773bf8f50. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZS7J2549333.