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 0xa2daf8471e5da3f129bc2a3c3862394e365874bd7f3d30f563c42bfe18c77104. 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/e45fb7da-161c-4f54-8668-be705aaabc58.json and https://artists.proofprofile.net/proofs/artist/e45fb7da-161c-4f54-8668-be705aaabc58.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 0xc38db5b67ce9b4a0ea0f4deec7bcf793b66de3366995d0433b7a4584daee442f. 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/75qHYATZ25Y9AHM3vaAZRL.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/75qHYATZ25Y9AHM3vaAZRL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b104983506ecf7be75faf62cf84bc359494ffbfe75f98e1077ede0fe60fc19. 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/1VjYFbXSqx9Ly9GxQVUXV1.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/1VjYFbXSqx9Ly9GxQVUXV1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c60ad8a805b7cb0f4482b7e261dc516b93f0fe33752d217e2a42c9578aa0d8. 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/74KI6d8jEM2zwOAo3luayU.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/74KI6d8jEM2zwOAo3luayU.
{"copyright_id":"0xcb71ea7688c4ecbad470837e5ba526af0186b8cca68bd951c59f7025c72da6ef","isrc":"USSM19703266","name":"Jesus or a Gun","registered_at":"2026-06-06T19:24:30Z","spotify_id":"0NpjAPnOKmOU7AvquLRgKP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb71ea7688c4ecbad470837e5ba526af0186b8cca68bd951c59f7025c72da6ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0NpjAPnOKmOU7AvquLRgKP.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/0NpjAPnOKmOU7AvquLRgKP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ba721bf874c656e05ff8df6a172c2234d75f66a833bf62a3d27c8bb397c861. 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/35EXxM1zE4eg2G6f3PSle4.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/35EXxM1zE4eg2G6f3PSle4.
{"copyright_id":"0x720a7ed36ac5619eb201e2fff3c5b8599a1ecda6edaa634aba8cf90d4ffef26f","isrc":"USSM19702940","name":"New Thing","registered_at":"2026-06-10T22:23:46Z","spotify_id":"7oLSm5acVfa2rG9y90LYcG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720a7ed36ac5619eb201e2fff3c5b8599a1ecda6edaa634aba8cf90d4ffef26f. 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/7oLSm5acVfa2rG9y90LYcG.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/7oLSm5acVfa2rG9y90LYcG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08780dcfeb11d2077224ef574a52878cbc07ccb40e228b510ec7d1ca38408cd5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:38:29Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1xCU54VMpRcRMp1616nThU.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/1xCU54VMpRcRMp1616nThU.
{"copyright_id":"0x343300adacde1cb3984d6eadffda6eebace84c7f8d344b0d5e8c5c921496afba","isrc":"USSM19702934","name":"Song For You","registered_at":"2026-06-09T11:11:11Z","spotify_id":"4SG0Oh8JcJ5cUlAVrAPXNN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343300adacde1cb3984d6eadffda6eebace84c7f8d344b0d5e8c5c921496afba. 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/4SG0Oh8JcJ5cUlAVrAPXNN.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/4SG0Oh8JcJ5cUlAVrAPXNN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98028ba438b88c4f8f22ee2858e973759ea4f79d7b582240e025515472c7a208. 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/7jA8S9plN3aEPnMqF9f966.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/7jA8S9plN3aEPnMqF9f966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0133a5662d64ab85841b2c55d9e2000bddac72da8d2e18d22a56c464943c8d00. 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/5YWiKTtVtuYkO9GWmdGuh2.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/5YWiKTtVtuYkO9GWmdGuh2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877eb679f49c970d3b5106546ee187af5341bc17ea7c80c81772fb117fd29534. 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/4OXhLoXxxaqn3SzRVQSfnJ.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/4OXhLoXxxaqn3SzRVQSfnJ.
{"copyright_id":"0x0a49c3e3bce0c4f4a1eaace6fc4b311d0a425ef1e4244543fba5067075b0bd2d","isrc":"USSM19702474","name":"King For A Day","registered_at":"2026-06-19T17:42:43Z","spotify_id":"0eY4B1JHHvO7fyBy41qngJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a49c3e3bce0c4f4a1eaace6fc4b311d0a425ef1e4244543fba5067075b0bd2d. 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/0eY4B1JHHvO7fyBy41qngJ.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/0eY4B1JHHvO7fyBy41qngJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24172a8763f9361ded008e8362abdd227db043b8c994b1da57554c2e951c4dcc. 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/2ZuxNes4KSVykTK2VrIpF7.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/2ZuxNes4KSVykTK2VrIpF7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb258b3959c425daa694e85e4e98478069858fc60996c66312c30982eb6d6e7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3E8eSqBoqLs8ELbrK3NJHs.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/3E8eSqBoqLs8ELbrK3NJHs.
Scream 3 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb258b3959c425daa694e85e4e98478069858fc60996c66312c30982eb6d6e7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4K5cc5jVS2GLhB5pmDBz9M.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/4K5cc5jVS2GLhB5pmDBz9M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c60ad8a805b7cb0f4482b7e261dc516b93f0fe33752d217e2a42c9578aa0d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1C9q6ENcGaUcuZ9qTYicFN.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/1C9q6ENcGaUcuZ9qTYicFN.