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 0x86709a8359297684da279cc28e463858df11730f7a9818243146c1a5e1e1e13d. 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/12620dc8-5fe8-4de7-8d3c-a13eb4723ba5.json and https://artists.proofprofile.net/proofs/artist/12620dc8-5fe8-4de7-8d3c-a13eb4723ba5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xf5899105bee364297c3a24e5abd31ff217e8e244aaf101a2f394c374cb67918c","isrc":"US2S72400001","name":"ThankU (feat. Dave Chappelle)","registered_at":"2026-06-04T13:19:38Z","spotify_id":"6A5axPueEwxqUdi5JtZlpW","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 0xf5899105bee364297c3a24e5abd31ff217e8e244aaf101a2f394c374cb67918c. 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/6A5axPueEwxqUdi5JtZlpW.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/6A5axPueEwxqUdi5JtZlpW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7049913d7717b785aad879a84c04f3e24367781f39be043be89e46d9cb6124. 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/7i6p1kY8DrZkDFoWi5vxu4.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/7i6p1kY8DrZkDFoWi5vxu4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd69f3950f1d6afb537369f4c64ab833131d57428aac846cda76626f9728a7b. 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/6NkpXwmHBAWYQmMDV0AVdw.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/6NkpXwmHBAWYQmMDV0AVdw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1897e9102106503c857ae1423757dab4708ac4d57ebd7e0f679a82cfe8069081. 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/0idhCXzizPkiwfUnhM28ld.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/0idhCXzizPkiwfUnhM28ld.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717f5b3c4535d3875109b8f3b5893fc351ac1fbfb4fab5c0b71506845fa62236. 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/4k8AO5jk774WA6mg9YCxSG.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/4k8AO5jk774WA6mg9YCxSG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4e0f4abc70e7ef5be1a1ba911d59c384d2def8d5f94e7ece897c30213945d9. 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/3JTM7oeDEd7nk2ids9T3IS.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/3JTM7oeDEd7nk2ids9T3IS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b77f6e85b95a9053e303a65a8653beb138473e141988cec8c06e8ea8091a75. 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/2Un1CELOG7WHLBUd7Yvtlp.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/2Un1CELOG7WHLBUd7Yvtlp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcf2e8f0ce2794a9720d5f2cf3b9f96dd2c98fee1ee100d708aae059d325e31. 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/1YZmYp9jZ4Veq6lZpiuV69.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/1YZmYp9jZ4Veq6lZpiuV69.
FromHere (feat. Snoop Dogg & October London)
{"copyright_id":"0x55bca8fcc4df03d5f9a3bda9d57b4d3f0aaa83773e1213e7f7c1fe1392d30177","isrc":"US2S72400009","name":"FromHere (feat. Snoop Dogg & October London)","registered_at":"2026-06-04T07:24:11Z","spotify_id":"16cmGQ7H77HhKSPftzB5iI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bca8fcc4df03d5f9a3bda9d57b4d3f0aaa83773e1213e7f7c1fe1392d30177. 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/16cmGQ7H77HhKSPftzB5iI.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/16cmGQ7H77HhKSPftzB5iI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56e6fa0200685b2ff641eec6e52341085311595983babfc3bceff6eec4e9827. 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/4Us0U2Q8UQTkysi9cs6hKT.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/4Us0U2Q8UQTkysi9cs6hKT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54422a5fd16ae1f0525562cc3d4ca62ff00f88f279c4a6513f69c9e60c061602. 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/36GWtBcdwjL6XlVe3XhroD.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/36GWtBcdwjL6XlVe3XhroD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12115f220625daa38c5762f420ef1aa6246941b584a5a9db180ae19620991b9e. 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/04BcI0Ptc7lDAWNXb1MK3k.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/04BcI0Ptc7lDAWNXb1MK3k.
{"copyright_id":"0x0f70306fdc3a49b93c90b1e553885e0f47999371e54bd355bc14b9feaab061f8","isrc":"US2S72400013","name":"OutTheWay (feat. Rae Khalil)","registered_at":"2026-06-04T10:56:54Z","spotify_id":"0IPG2jOqjMz3PAIeh4NhXW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f70306fdc3a49b93c90b1e553885e0f47999371e54bd355bc14b9feaab061f8. 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/0IPG2jOqjMz3PAIeh4NhXW.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/0IPG2jOqjMz3PAIeh4NhXW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c582e211afb9f3c6a5b8031da47b56509615231d034009974ad223d1df3b44. 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/5mcGLeUeelESgoTAj4LbnL.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/5mcGLeUeelESgoTAj4LbnL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000f6372bc7741ea5321ada021cddab2116782a4d779c2607d11a5b1ea3d0c35. 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/6NVY8htxO88vGie5va5T5L.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/6NVY8htxO88vGie5va5T5L.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565267cad74a344d26e68252fa3e03f529d9fed292b5d80f07b14937d9286196. 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/2Jm56bcnfft4thtrbN9SW4.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/2Jm56bcnfft4thtrbN9SW4.
DistantSpace (feat. The Last Artful, Dodgr)
{"copyright_id":"0xa473b4a240838eddac28e59057ce7595397f76c646666f8d7341ba2a54d00a1b","isrc":"US2S72400017","name":"DistantSpace (feat. The Last Artful, Dodgr)","registered_at":"2026-06-04T14:28:30Z","spotify_id":"7BA1YwPLOPTmlkYCWRoPzW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa473b4a240838eddac28e59057ce7595397f76c646666f8d7341ba2a54d00a1b. 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/7BA1YwPLOPTmlkYCWRoPzW.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/7BA1YwPLOPTmlkYCWRoPzW.
WalkOnBy (feat. Earl Sweatshirt & Rae Khalil)
{"copyright_id":"0xf926136167b94d46cfe35e531869a3996b09a6adda5a6f8e225ad79f098d0c8d","isrc":"US2S72400018","name":"WalkOnBy (feat. Earl Sweatshirt & Rae Khalil)","registered_at":"2026-06-04T09:08:01Z","spotify_id":"36dXojpK4JbefZoCLRVVMF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf926136167b94d46cfe35e531869a3996b09a6adda5a6f8e225ad79f098d0c8d. 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/36dXojpK4JbefZoCLRVVMF.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/36dXojpK4JbefZoCLRVVMF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2fba34cf1e9da8714c8843d56ec3a3ef073002f379cfbe52bf87783425bab2. 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/01kDXQFFBXh2JoywBp5YB2.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/01kDXQFFBXh2JoywBp5YB2.