1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe6b4b8b9ae47931d72e3cd3d64aa213242ea36dfa4183b3156a38c0bbff6c13c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d98b09c4-2875-4a7f-9ce7-3a8ddd1347b5.json and https://artists.proofprofile.net/proofs/artist/d98b09c4-2875-4a7f-9ce7-3a8ddd1347b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ff92c83d057453102d303957428c0efed083c58deec2c1c1cf2cabc4b8bf95. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5axckopktrLBIEgFrlxHRt.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5axckopktrLBIEgFrlxHRt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f59399218d2e3a44f05dae0242c76bb89013c64c17b44d6d2dce493e840164. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2LQTYjiNg33xR9okf07d8a.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2LQTYjiNg33xR9okf07d8a.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82889cad8e60fb4b7284def72df79945a1ed2f8ebb7364483279a173a6f06c31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ScdIArfJHn8HG9jxPPjIK.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2ScdIArfJHn8HG9jxPPjIK.
{"copyright_id":"0x8b3043fa816821afe242db3e307ab088d55a9007bf56eab87fded180cf8c3b4d","isrc":"TR4290700085","name":"Sallana Sallana","registered_at":"2026-06-25T01:17:40Z","spotify_id":"7IGloE7Wkuoi1qJQOQ9LEn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3043fa816821afe242db3e307ab088d55a9007bf56eab87fded180cf8c3b4d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7IGloE7Wkuoi1qJQOQ9LEn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7IGloE7Wkuoi1qJQOQ9LEn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ce084cf666307a1e930baa08b335b226b0157591d4c2456a7f9ea56e2d55bc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4qWUq36LW3M9xnOsTNoh1L.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4qWUq36LW3M9xnOsTNoh1L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05763ad96e4525e3c3feb191183a5e61ee4111cf4c97808b9113e069c31b995f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6vgk0hXcikD5l9YlrG6bCV.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6vgk0hXcikD5l9YlrG6bCV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283975da14cfbfb25748ede6f9a585d0430151bc0e7cb3903bd8d28b49881513. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3RzQVYD0tR2Zd8XMy9BFis.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3RzQVYD0tR2Zd8XMy9BFis.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afa914db480db1dc7ea2132e71baf7e932c15c5553d5185bb9f6767e3cf2dd0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1jJytBgpIdCLTYiFjXVUUX.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1jJytBgpIdCLTYiFjXVUUX.
{"copyright_id":"0x4ac00a0859b3db0c155a31a05ff48c545243e8e741f09b01360f8fb4fe09fe2c","isrc":"TR4290700092","name":"Mavileşirdi Gözlerin","registered_at":"2026-06-23T22:50:55Z","spotify_id":"3DpKPBQdvYFK3t7aLoF2YF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac00a0859b3db0c155a31a05ff48c545243e8e741f09b01360f8fb4fe09fe2c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3DpKPBQdvYFK3t7aLoF2YF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3DpKPBQdvYFK3t7aLoF2YF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17141498b097b7b26bcdb299fe87d6208106c7787f61e6ad3deb91016dfb533b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4DPHI0rozXXHX8E0LHgpKc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4DPHI0rozXXHX8E0LHgpKc.
{"copyright_id":"0x4c9de4d41233247fa17ee786c12965fac3dcadf3350e69cbfd7128e8192788b1","isrc":"TR4290700094","name":"Hala Söyleyecek Bir Türkümüz Var","registered_at":"2026-06-25T01:27:33Z","spotify_id":"6RSCpbs6UeAv5Fa7gqrw66","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9de4d41233247fa17ee786c12965fac3dcadf3350e69cbfd7128e8192788b1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6RSCpbs6UeAv5Fa7gqrw66.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6RSCpbs6UeAv5Fa7gqrw66.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c0b25b2865a71a0b9a3f2525501668d8024a2cad2652afea2d0ffdb40c3e85. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2J6jhVg7Fe8ZH68jtREwYc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2J6jhVg7Fe8ZH68jtREwYc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149179c51e4ed7f20e3313aad623afcd54e45f09a3454a597bd70f27427d3c97. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1epXDhyDbTV8Fffe4DAe21.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1epXDhyDbTV8Fffe4DAe21.
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