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 0x4d9262c17488d54e92b92a0dd2cc62642861e61517b93eaae4d076d4e5e5dbbb. 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/b118d34e-0528-4aea-a463-08d75fa03041.json and https://artists.proofprofile.net/proofs/artist/b118d34e-0528-4aea-a463-08d75fa03041.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
High & Fines Herbes La Mixtape - Volume 2 - Saison 4. Parce qu’on n’a pas fait de mixtape pour les deux premières saisons. Ok, c’est pas très logique, mais on-s’en-bat-les-couilles, le projet
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 0x201567249e7972a68f60120fa88cce2312220ed7529249973ad45e3f75bcb8c0. 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/12NQaT1bV3WAvLFXxSrUm0.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/12NQaT1bV3WAvLFXxSrUm0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9a98cfa89a9e468ee24483729c0414ff49627cdb48f27646f6231c325f962c. 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/7LQkHibiwITyr0wdqQ7gSg.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/7LQkHibiwITyr0wdqQ7gSg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c0fa52a801d0a1b6527ab64117a9d94a3517e75ece492e6668045fc418fd2b. 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/03ecPAZxiY39aKP2knVKhZ.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/03ecPAZxiY39aKP2knVKhZ.
{"copyright_id":"0xee4e336ca16c9eb669eb3a45306a8ce2361e3cf51dfb349a8ea32196b67ee4b1","isrc":"BEEO72300004","name":"Skit Paolo Mirabelli","registered_at":"2026-06-20T06:43:34Z","spotify_id":"50l3Ijqx1FQjjOzAvZX5VY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4e336ca16c9eb669eb3a45306a8ce2361e3cf51dfb349a8ea32196b67ee4b1. 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/50l3Ijqx1FQjjOzAvZX5VY.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/50l3Ijqx1FQjjOzAvZX5VY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad39009d6d82e2626c1dc1f4dd3992f45dec42f9d4c0e2090b0c0493f89603b2. 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/0ddzN7uIQupcq4qUd8fOoC.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/0ddzN7uIQupcq4qUd8fOoC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e36157d369a121a63d7fba56d3345185f2b2d22f44adbf056b70b56e4433dfe. 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/0Iy9aEopULl1zarY7uX1Fe.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/0Iy9aEopULl1zarY7uX1Fe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb195c8b7aee769935399f80ea2086ab59305d2a9208d93dcd4d4981f1d05d1. 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/30sYR8fyHG26N8jVXEJQQJ.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/30sYR8fyHG26N8jVXEJQQJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53512be294dc205c4587fbf38281faf82c2d94120ca708c3d13ae50cf3dbe56e. 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/711tPhs5Mw5blnlfPqilJB.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/711tPhs5Mw5blnlfPqilJB.
{"copyright_id":"0xc4c413865864971cc1a53cbe520ba8d2a74a44dccbaf50afe1bd2c6485a103bb","isrc":"BEEO72300009","name":"Skit Jimmy the loutre","registered_at":"2026-06-09T08:38:56Z","spotify_id":"4cqXVdFL7xa7yU7qCx8Dum","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c413865864971cc1a53cbe520ba8d2a74a44dccbaf50afe1bd2c6485a103bb. 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/4cqXVdFL7xa7yU7qCx8Dum.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/4cqXVdFL7xa7yU7qCx8Dum.
{"copyright_id":"0x10724efcb080e33ee523553849b77a1df2c49d20f31f546fea23e1f61fb25abe","isrc":"BEEO72300010","name":"La vie en vert","registered_at":"2026-06-04T12:25:15Z","spotify_id":"61cS5fgMgfCQQZzATzfgaw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10724efcb080e33ee523553849b77a1df2c49d20f31f546fea23e1f61fb25abe. 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/61cS5fgMgfCQQZzATzfgaw.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/61cS5fgMgfCQQZzATzfgaw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ccc7847d507776412c4be4547cd746f4e410ae00c3e35db2cd1f42a8043732. 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/7vP1doOYCgJq3wuYfKnCFc.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/7vP1doOYCgJq3wuYfKnCFc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9115feaaed2cc978c4552f08263e7ecf267fd61ca35cba7968f36c2beb284c8d. 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/2IgpcOWpayWdEh6Sdx5dWF.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/2IgpcOWpayWdEh6Sdx5dWF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a091b52be789bc81d986415ba67fc05698c204a6863c87d0b04276e405c1c8. 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/070Hyqxka98bGR4h2BKfhK.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/070Hyqxka98bGR4h2BKfhK.
{"copyright_id":"0xeed9e96abd5458826efb5bb68977b345f2103132b9794fe927ac5486dac74cee","isrc":"BEEO72300014","name":"Le générique","registered_at":"2026-06-07T05:47:50Z","spotify_id":"6JzDitEywO2y7JiXFW8wuf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed9e96abd5458826efb5bb68977b345f2103132b9794fe927ac5486dac74cee. 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/6JzDitEywO2y7JiXFW8wuf.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/6JzDitEywO2y7JiXFW8wuf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113e2b7b6892bf958fef77d9cb09c137d79e924d94181130c5f30a5c0ca5ee06. 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/15e7TPGk7sUSaOyWmLH3QF.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/15e7TPGk7sUSaOyWmLH3QF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c0fa52a801d0a1b6527ab64117a9d94a3517e75ece492e6668045fc418fd2b. 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/5vnnl9cnndbuWRj2BEUv9S.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/5vnnl9cnndbuWRj2BEUv9S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113e2b7b6892bf958fef77d9cb09c137d79e924d94181130c5f30a5c0ca5ee06. 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/4Lds6fR4rsyFpVjpZCVF8i.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/4Lds6fR4rsyFpVjpZCVF8i.
{"copyright_id":"0x7508995be36d825cb6c727624afa33ecc3e5f11e7fc5b0cf8094899aa0e634fc","isrc":"FRECK2300010","name":"Très à propos","registered_at":"2026-06-04T16:14:03Z","spotify_id":"3KQtED1UZnlHLnhAAfdrXF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7508995be36d825cb6c727624afa33ecc3e5f11e7fc5b0cf8094899aa0e634fc. 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/3KQtED1UZnlHLnhAAfdrXF.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/3KQtED1UZnlHLnhAAfdrXF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba2985ebc14668af6049fa60f2fd8a31b65e2411c8e8a88838923ff41eae1a9. 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/4X60pX3bOKgFuQMJiElGvf.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/4X60pX3bOKgFuQMJiElGvf.