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 0xdab36506dd649b031d79d2c784055605dcd935e6e747af7642f92841aae21168. 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/5824b3a4-12b7-4429-ae0e-35cd463f3fa0.json and https://artists.proofprofile.net/proofs/artist/5824b3a4-12b7-4429-ae0e-35cd463f3fa0.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 0xf21a8c1a975a43e1323a4a3f85a9df06e3bf2d09601ced76b31a65e38be88321. 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/0l7SoXVusjfRzY7Zc4MzF7.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/0l7SoXVusjfRzY7Zc4MzF7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d9e0ebf59be4253da50eec93b7e26e94dc82b9ac4e8fa7f562e4cf2a22fb2c. 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/0hFtTBKtAxWokk01veZTc0.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/0hFtTBKtAxWokk01veZTc0.
{"copyright_id":"0xfda75eae9d9ecdf3e5bc772b20a424ca5e08ab1de9141c934c51194dcde90798","isrc":"ITGFL2500002","name":"TUTA ADIDAS (feat. Ensi)","registered_at":"2026-06-07T00:54:09Z","spotify_id":"03BFDoQc6D3OQd1A6EzItH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda75eae9d9ecdf3e5bc772b20a424ca5e08ab1de9141c934c51194dcde90798. 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/03BFDoQc6D3OQd1A6EzItH.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/03BFDoQc6D3OQd1A6EzItH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c08aa2b9fbc1585fac307c944e38ad57696e126248d3dc0f98db30f7610420. 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/5QtGDNlASnEB4A9zaXJdZv.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/5QtGDNlASnEB4A9zaXJdZv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee29e2292b46f33f01399249acecfd0df300d745112fc1d7e1aa12e438edfd. 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/0oL5l5IEFTg5al3d3BIlSD.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/0oL5l5IEFTg5al3d3BIlSD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1c1462ee657176c39cb7702f3da431f80bac65514249084ac93efd211a79d7. 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/3zlDSWwdHTMmdk2VaG9kxN.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/3zlDSWwdHTMmdk2VaG9kxN.
HO AVUTO UN FLASH (feat. sir prodige & Jack The Smoker)
{"copyright_id":"0x36c37b311c5c3a7c950788ef42f6d6394f830d795bc199e37cd598cd89b1a10e","isrc":"ITGFL2500006","name":"HO AVUTO UN FLASH (feat. sir prodige & Jack The Smoker)","registered_at":"2026-06-10T04:22:58Z","spotify_id":"2FwUT46pC9qRckEHSFfIq4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c37b311c5c3a7c950788ef42f6d6394f830d795bc199e37cd598cd89b1a10e. 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/2FwUT46pC9qRckEHSFfIq4.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/2FwUT46pC9qRckEHSFfIq4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa836a206c3017e4fb9ab53761abab3714f82267c113ba4d21c24a8b3130780d5. 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/6ecWSHAz8z8rtnUHddOUzY.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/6ecWSHAz8z8rtnUHddOUzY.
{"copyright_id":"0x3c5daf097aba1e8c8858182ba6cdc5b4a139cda87d926a25ad447712a1c8c41f","isrc":"ITGFL2500008","name":"LADY GAGA","registered_at":"2026-06-17T23:11:03Z","spotify_id":"6qzEY2eMro1OKhla65nnwC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5daf097aba1e8c8858182ba6cdc5b4a139cda87d926a25ad447712a1c8c41f. 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/6qzEY2eMro1OKhla65nnwC.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/6qzEY2eMro1OKhla65nnwC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304400f520960d45c921d1782fa995dd8b3d4b45b9a00384f2e420bceff12aa7. 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/48QdVC9gJOQNWx4EvGJ96X.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/48QdVC9gJOQNWx4EvGJ96X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21a8c1a975a43e1323a4a3f85a9df06e3bf2d09601ced76b31a65e38be88321. 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/579wfGTDOh89LqYVCN2kCG.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/579wfGTDOh89LqYVCN2kCG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d9e0ebf59be4253da50eec93b7e26e94dc82b9ac4e8fa7f562e4cf2a22fb2c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:33:01Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Jqk3UckEgL2XprZ30KNZX.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/7Jqk3UckEgL2XprZ30KNZX.
{"copyright_id":"0xfda75eae9d9ecdf3e5bc772b20a424ca5e08ab1de9141c934c51194dcde90798","isrc":"ITGFL2500002","name":"TUTA ADIDAS (feat. Ensi)","registered_at":"2026-06-07T00:54:09Z","spotify_id":"2cKI0z8pNgCqMsXchoXcwc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda75eae9d9ecdf3e5bc772b20a424ca5e08ab1de9141c934c51194dcde90798. 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/2cKI0z8pNgCqMsXchoXcwc.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/2cKI0z8pNgCqMsXchoXcwc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c08aa2b9fbc1585fac307c944e38ad57696e126248d3dc0f98db30f7610420. 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/13tC5KG5ExKWUrhm72rdrQ.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/13tC5KG5ExKWUrhm72rdrQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee29e2292b46f33f01399249acecfd0df300d745112fc1d7e1aa12e438edfd. 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/3SqShHmdTrpavx4vpFgNYY.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/3SqShHmdTrpavx4vpFgNYY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1c1462ee657176c39cb7702f3da431f80bac65514249084ac93efd211a79d7. 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/6rgmf2zXEwDZu3ojsjYYRK.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/6rgmf2zXEwDZu3ojsjYYRK.
{"copyright_id":"0x36c37b311c5c3a7c950788ef42f6d6394f830d795bc199e37cd598cd89b1a10e","isrc":"ITGFL2500006","name":"HO AVUTO UN FLASH (feat. sir prodige & Jack The Smoker)","registered_at":"2026-06-10T04:22:58Z","spotify_id":"6pFdp74EGTPWtVsJKlzFgI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c37b311c5c3a7c950788ef42f6d6394f830d795bc199e37cd598cd89b1a10e. 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/6pFdp74EGTPWtVsJKlzFgI.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/6pFdp74EGTPWtVsJKlzFgI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa836a206c3017e4fb9ab53761abab3714f82267c113ba4d21c24a8b3130780d5. 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/37ZD94EdPwFjUV3KqeyOhj.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/37ZD94EdPwFjUV3KqeyOhj.
{"copyright_id":"0x3c5daf097aba1e8c8858182ba6cdc5b4a139cda87d926a25ad447712a1c8c41f","isrc":"ITGFL2500008","name":"LADY GAGA","registered_at":"2026-06-17T23:11:03Z","spotify_id":"6Stxvdk6loKcfTvFdYRVda","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5daf097aba1e8c8858182ba6cdc5b4a139cda87d926a25ad447712a1c8c41f. 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/6Stxvdk6loKcfTvFdYRVda.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/6Stxvdk6loKcfTvFdYRVda.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304400f520960d45c921d1782fa995dd8b3d4b45b9a00384f2e420bceff12aa7. 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/2rSmOsiUTcLhYzoCz2rgyL.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/2rSmOsiUTcLhYzoCz2rgyL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa585d43940abf683d8c56a7c0f00fcf04320b01debd1a57cb3a0c53ebb6046c3. 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/3sFQ2lhlnQZC8BCHWieU80.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/3sFQ2lhlnQZC8BCHWieU80.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dd4b64288ef929c1650072786765d8fdf5beb800ac6aa03b0c9fdfa2df735c. 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/3UGQkfXRscpBu6wzdHWcBn.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/3UGQkfXRscpBu6wzdHWcBn.