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 0x383203016ebda2ca3b8a1f247c1012939e493b0c0022c9b105860955cf291690. 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/697552a8-7b47-4c31-b2e2-a2a7fda61664.json and https://artists.proofprofile.net/proofs/artist/697552a8-7b47-4c31-b2e2-a2a7fda61664.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 0x6f32316a06ff8ab99d822316943e4113d8624c2fb5b2421452124ad402995c89. 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/4joBW7qC3W1qGw1OkmuYy7.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/4joBW7qC3W1qGw1OkmuYy7.
{"copyright_id":"0xef4655228e075becd42bae6573e6d3dc20e07d8e0fcd8fdb261072afebc44ad0","isrc":"FRDKU2100460","name":"La ive","registered_at":"2026-06-18T16:31:10Z","spotify_id":"2zIswQ9RrOKfnY4ssjqEtC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4655228e075becd42bae6573e6d3dc20e07d8e0fcd8fdb261072afebc44ad0. 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/2zIswQ9RrOKfnY4ssjqEtC.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/2zIswQ9RrOKfnY4ssjqEtC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134379eb405b56afc8ad9affd48854a7d7d71f382c53d8f184bc098954c69935. 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/6ptEQHNblGYSPaPCBqfXps.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/6ptEQHNblGYSPaPCBqfXps.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3c7ed299bf71a8b294ffdfce547a71425db52c2b758ce7c560f87d60955b11. 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/1SAEdf0adv0HP1d6CZ82wT.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/1SAEdf0adv0HP1d6CZ82wT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee598b28fff01ae27fab044f0db218f95399be09d3e1f4d46c31800372334b6. 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/4Y0pQ67Plo3UU9qE5Zyrx8.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/4Y0pQ67Plo3UU9qE5Zyrx8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e657b6dd24a9ee535a470ca93456487c29b5556ab8cdae05008f2655839e4fd. 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/4uQfjC83N7qg0GqQsus2u2.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/4uQfjC83N7qg0GqQsus2u2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d574ef237198182f13baa09f651357a42891e0372428efe4faa3941aee12072. 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/2EgisrEEQT7yOueI60MDZ3.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/2EgisrEEQT7yOueI60MDZ3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5c8bb08893bb25f34a0bb4580f7404d66547f6e5e9273149971bde831938c5. 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/7iHlD4OcrvOnCoJOBOi6qK.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/7iHlD4OcrvOnCoJOBOi6qK.
{"copyright_id":"0x6d71d9a03b0436daa5ec78dc476cbf3f52aa2b24bee12b623b5d5a071230dea6","isrc":"FR2X41622652","name":"Voisin d'en haut","registered_at":"2026-06-04T15:14:13Z","spotify_id":"4Sw6N8rJVMW0vitqblmUB3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d71d9a03b0436daa5ec78dc476cbf3f52aa2b24bee12b623b5d5a071230dea6. 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/4Sw6N8rJVMW0vitqblmUB3.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/4Sw6N8rJVMW0vitqblmUB3.
{"copyright_id":"0x7c9257b0d5564c94f1823b5e9f9aebdf958da4afba146188c7f8562cb222d13c","isrc":"FR2X41622656","name":"Quoi d'neuf fréro - Bonus Track","registered_at":"2026-06-18T02:08:06Z","spotify_id":"4P8sE24nOk3JYGUS30eyAI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9257b0d5564c94f1823b5e9f9aebdf958da4afba146188c7f8562cb222d13c. 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/4P8sE24nOk3JYGUS30eyAI.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/4P8sE24nOk3JYGUS30eyAI.
{"copyright_id":"0xeb1bcd6cd8557dcb635f37d4172e47e2ca45fdf9ab62da2510582294c09bdadb","isrc":"FRX851901984","name":"Pentacle et bougie","registered_at":"2026-06-18T01:35:24Z","spotify_id":"2BD8YkNCr7S9bgUMhxzlzO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1bcd6cd8557dcb635f37d4172e47e2ca45fdf9ab62da2510582294c09bdadb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2BD8YkNCr7S9bgUMhxzlzO.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/2BD8YkNCr7S9bgUMhxzlzO.
{"copyright_id":"0xeb1bcd6cd8557dcb635f37d4172e47e2ca45fdf9ab62da2510582294c09bdadb","isrc":"FRX851901984","name":"Pentacles et bougies","registered_at":"2026-06-18T01:35:24Z","spotify_id":"1nx6SEq0v6UJ9uk8r9ayUO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1bcd6cd8557dcb635f37d4172e47e2ca45fdf9ab62da2510582294c09bdadb. 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/1nx6SEq0v6UJ9uk8r9ayUO.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/1nx6SEq0v6UJ9uk8r9ayUO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a3533e2548a3d01721fca2b842482b634795f6eb9287c5371670f45f8c744f. 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/1DhQjQnRtA3KBNuxGUWO5T.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/1DhQjQnRtA3KBNuxGUWO5T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ce9fd61992efeb6a8ab1847db2b1025eefdf39239cb20bfa4996c13603949. 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/2KA7qx1tDOroXZJNPqXOeW.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/2KA7qx1tDOroXZJNPqXOeW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ce9fd61992efeb6a8ab1847db2b1025eefdf39239cb20bfa4996c13603949. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3IdLBd255cZFGHIaXN5bmK.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/3IdLBd255cZFGHIaXN5bmK.
Chien galeux (feat. I.N.C.H, Al'Tarba, Yoman)