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 0x96ad535517b4dce36308004602126f82b56efbb06f4eac085e0a23b9c31bc9ed. 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/aa554b13-feba-4434-b9e9-64ad9f114e4f.json and https://artists.proofprofile.net/proofs/artist/aa554b13-feba-4434-b9e9-64ad9f114e4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xc30afee4cccf661f5d38e3587cf711e8edd9772cd4decfc277f5f4d485c484c7","isrc":"QZDA42401334","name":"Mountain Goat","registered_at":"2026-06-24T19:55:44Z","spotify_id":"10XcODYV8yR9EAzjJiwGpG","type":"track"}
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 0xc30afee4cccf661f5d38e3587cf711e8edd9772cd4decfc277f5f4d485c484c7. 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/10XcODYV8yR9EAzjJiwGpG.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/10XcODYV8yR9EAzjJiwGpG.
{"copyright_id":"0x9b0db94c5365be5a42c434e0ec7f7ad0bc28d9d65a1d5f8ac5dd56583f147bd6","isrc":"QZDA42401335","name":"Roll It Back","registered_at":"2026-06-23T13:40:50Z","spotify_id":"3bKnrVLiE6oqhDNpPXOpf1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0db94c5365be5a42c434e0ec7f7ad0bc28d9d65a1d5f8ac5dd56583f147bd6. 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/3bKnrVLiE6oqhDNpPXOpf1.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/3bKnrVLiE6oqhDNpPXOpf1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ffdb0638e3e1d724601678fb3231716d87c8a94a8952a8a129b5dcd30e1b7e. 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/4Y2PvQkRvHoLTQaovDnq6d.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/4Y2PvQkRvHoLTQaovDnq6d.
{"copyright_id":"0xeddc678caac0e1ea8ef467d306af64f2e5afc607d41481cab8681e1ef454146b","isrc":"QZDA42401337","name":"Smoke On The Job","registered_at":"2026-06-20T10:53:04Z","spotify_id":"5BtEn5C1NeWJhyby1qSTh3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddc678caac0e1ea8ef467d306af64f2e5afc607d41481cab8681e1ef454146b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5BtEn5C1NeWJhyby1qSTh3.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/5BtEn5C1NeWJhyby1qSTh3.
{"copyright_id":"0x778047ad181099eedddbaccbb34ca9d9df34ecbebe78ad9df9f20480ccda03ac","isrc":"QZDA42401338","name":"Lil Old Town","registered_at":"2026-06-21T08:30:12Z","spotify_id":"5myffrP9OIj1UCiMMdeACQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778047ad181099eedddbaccbb34ca9d9df34ecbebe78ad9df9f20480ccda03ac. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5myffrP9OIj1UCiMMdeACQ.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/5myffrP9OIj1UCiMMdeACQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a3c5d2241eff021e834d65d0fc727b1ea9d4c5ec7945539585fce19b81a8ab. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/08fKnQDXeDk0Cx2UAORP9p.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/08fKnQDXeDk0Cx2UAORP9p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92df53a2fc01fa22184ede4321f8e0f2e9a40e73c49097ab56d72406b2a16286. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5d3CmtsT6MUHeZA5075om3.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/5d3CmtsT6MUHeZA5075om3.
{"copyright_id":"0xb1fc553ec0218064110ec823ef34cd0d2df93bdef4e8c286f3bd34acc1c5df32","isrc":"SE6SA2214105","name":"Digital Hearts","registered_at":"2026-06-22T07:16:15Z","spotify_id":"1k4lAcHXN0nDEnncnHTQOj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fc553ec0218064110ec823ef34cd0d2df93bdef4e8c286f3bd34acc1c5df32. 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/1k4lAcHXN0nDEnncnHTQOj.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/1k4lAcHXN0nDEnncnHTQOj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec9e7c8139800b32f3984ed9857dc709068c44d53c3efc383b6e24b7e0664da. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4cLH9bxplpw1V32nAjsXcq.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/4cLH9bxplpw1V32nAjsXcq.
{"copyright_id":"0xbd4d59026b2c68e7d2c6ddf10778f285645a7cc7c0c8fadb4cf37001f0fca5e3","isrc":"GB5P52200535","name":"Silent Meeting","registered_at":"2026-06-24T18:48:20Z","spotify_id":"0MwR2rSrW4zibiQrsL4gbm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4d59026b2c68e7d2c6ddf10778f285645a7cc7c0c8fadb4cf37001f0fca5e3. 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/0MwR2rSrW4zibiQrsL4gbm.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/0MwR2rSrW4zibiQrsL4gbm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3872ccfae51270776e00169b8e7098954980b78db9ff820dc73d49a400aad99. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4BfBXwvUpNF32uR198vhtY.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/4BfBXwvUpNF32uR198vhtY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27033ac72b05a80759341e5d3af90151897598cbbe95994ac5c70b9c7e26d1ab. 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/5LatGlgYklcI2AwncjBR12.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/5LatGlgYklcI2AwncjBR12.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da4f6d883258872b25d71025ffb1728b836b1915ac943bbfbfb22a0f678efb1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3wfNYHmYgzLu54pHGH7It8.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/3wfNYHmYgzLu54pHGH7It8.