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 0x3bd08e067d9670ce2eafbe9af543ca653005487bc18b1fd46ce667f25067475a. 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/99e306ad-f109-4b47-986c-0b9716ac0c03.json and https://artists.proofprofile.net/proofs/artist/99e306ad-f109-4b47-986c-0b9716ac0c03.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 0xd2f742e3b93de5b631a6fbbe6ec519e0a9fe92079a444083210aab2db2484fa5. 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/5H4QiSCbHW28zFn25155Fl.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/5H4QiSCbHW28zFn25155Fl.
{"copyright_id":"0xc5201b8fba39fa098deecc3edb947c6fb3bf15903b2b670166bd8be7172628ce","isrc":"QZXLZ2330210","name":"One Night - Extended","registered_at":"2026-06-25T10:41:40Z","spotify_id":"7Gbn2WyTK9XFdjUyMRa4hC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5201b8fba39fa098deecc3edb947c6fb3bf15903b2b670166bd8be7172628ce. 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/7Gbn2WyTK9XFdjUyMRa4hC.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/7Gbn2WyTK9XFdjUyMRa4hC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a799f10cf3a9411e5bac55c6d4bc82d71d6c984d58a241864ce0467af86fa0. 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/1VowJjwSQW7EJFE0YOFF0Y.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/1VowJjwSQW7EJFE0YOFF0Y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b96da01804d2c4e432e2ca9d002f2d263d735984c24eaeefc8c1c274d5e35a2. 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/6rOyYYFO8B4Bwt4jL0PqgU.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/6rOyYYFO8B4Bwt4jL0PqgU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e44f3fbda4e075c945e246dd711fd8af4535baf6d4de52f77c0b1c0aea2a930. 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/4DMCvmlTPc3tauvkwtZqnn.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/4DMCvmlTPc3tauvkwtZqnn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98fe13ce0637b5c52391dc678b5f68e591539fe7d6d31480d3428ebd021c8cc. 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/4HNQECEYo7eNadpuC6ykPy.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/4HNQECEYo7eNadpuC6ykPy.
{"copyright_id":"0x3bab4f6f403c5fbe19fe4c33068f038792337a8ab0c5e2611a541e7f0eedadbe","isrc":"GBKQU2408078","name":"How Will I Know","registered_at":"2026-06-10T22:42:24Z","spotify_id":"7vmUt8RvvRmz6lHUpv8wol","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bab4f6f403c5fbe19fe4c33068f038792337a8ab0c5e2611a541e7f0eedadbe. 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/7vmUt8RvvRmz6lHUpv8wol.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/7vmUt8RvvRmz6lHUpv8wol.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdca8d8e8790ae0d25cf770c6c57f18d92b38fe3d5c6eb5185f3577b4f6c413. 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/3H9XqAd3K9Dk42hTHGaWqK.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/3H9XqAd3K9Dk42hTHGaWqK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca86fd35ee633b1ed1284540649472a655d6e7f676a4932252b762426e008c3a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5iiT5hj8JxcPHuWgnBIRis.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/5iiT5hj8JxcPHuWgnBIRis.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179511fbd404c705e66746dc2f30666ce494c82f47783d1ca920b585642cdfd8. 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/7JN84nZKfUrIcdivUGBeeC.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/7JN84nZKfUrIcdivUGBeeC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e206904dc5d83380001cb4a0dd6bac2c72893f5bd2c98d6df665fb62ce9694f. 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/5z4yptuodMXGCQtuOq14LY.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/5z4yptuodMXGCQtuOq14LY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250aab0a1aa1caed62863b4e690fa0df6eb87c4cdce87da9871654b58025d0e5. 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/0MTJnbyhAMfsakRRxH5elV.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/0MTJnbyhAMfsakRRxH5elV.
{"copyright_id":"0x763c9e7dc61ce905586ec4332c327fe3bac5d19d3cda124a41cbed62cfb61ece","isrc":"GX5MY2250856","name":"Angel Dust","registered_at":"2026-06-11T17:50:20Z","spotify_id":"1ruwonpvPv8Wk9iOfHO1nU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763c9e7dc61ce905586ec4332c327fe3bac5d19d3cda124a41cbed62cfb61ece. 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/1ruwonpvPv8Wk9iOfHO1nU.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/1ruwonpvPv8Wk9iOfHO1nU.
{"copyright_id":"0x3e9cbe13d110292b34db096bdeaca07a59bfe0d6efbe12dae7c98b42b8c2d011","isrc":"GX3HH2237650","name":"Falling Into Your Arms","registered_at":"2026-06-10T09:08:42Z","spotify_id":"1ru1Z3qgo2njsGqUcdQCy7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9cbe13d110292b34db096bdeaca07a59bfe0d6efbe12dae7c98b42b8c2d011. 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/1ru1Z3qgo2njsGqUcdQCy7.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/1ru1Z3qgo2njsGqUcdQCy7.
{"copyright_id":"0xb431f835255f376556d01f4c7aa2dcac6debe5d82008a81e547f6fed747675fc","isrc":"GX3HH2289005","name":"Can't Forget Your Face","registered_at":"2026-06-08T15:18:23Z","spotify_id":"1RpKULVooOuEzgpver8hof","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb431f835255f376556d01f4c7aa2dcac6debe5d82008a81e547f6fed747675fc. 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/1RpKULVooOuEzgpver8hof.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/1RpKULVooOuEzgpver8hof.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8562fc0534ac063c91fc233de4248d042384f30326360e6c7b6613049ac638e6. 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/4h4pB7CnIWEGfkTE1qGHTe.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/4h4pB7CnIWEGfkTE1qGHTe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3877acbe1089bb766f97cee9eb09975844c85f20c58c4e5f8756b16e1e056cc5. 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/2dzbUn0iGKt8I9IK3kA84c.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/2dzbUn0iGKt8I9IK3kA84c.
{"copyright_id":"0xd7f9d7e1a3b7592f7bfbba893daccb61ef794a7cbda0a416129155edb0a6acfb","isrc":"TCAES2039255","name":"Breathe You In","registered_at":"2026-06-23T18:10:06Z","spotify_id":"1pHCK4WffxgEbPBPf4bAI9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f9d7e1a3b7592f7bfbba893daccb61ef794a7cbda0a416129155edb0a6acfb. 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/1pHCK4WffxgEbPBPf4bAI9.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/1pHCK4WffxgEbPBPf4bAI9.