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 0x3b4bdae700cfc85866a6d0b7f40e92cc336999f452b233bc274f6fd2a4d832ad. 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/8abf4606-f2e5-4956-8205-ee4822f0d84d.json and https://artists.proofprofile.net/proofs/artist/8abf4606-f2e5-4956-8205-ee4822f0d84d.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 0x3540a3765464397ec3b56d4b8123c89606870d776662c274641265644af2483e. 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/3hzsrFu0zcOdCfmzWXAx9U.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/3hzsrFu0zcOdCfmzWXAx9U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756fdbcfc3a73a7dad844ebe387edd3cd7a156ae601cca8369833b39de0a4ff5. 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/3iIsbi2MT6GtVZd1Z8UPfR.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/3iIsbi2MT6GtVZd1Z8UPfR.
Ce mur qui nous sépare - de la série TV "Miraculous"
{"copyright_id":"0x6ac4ab817161d1d477984ac69bd595139c6f90cdfb42c178875397849135fd77","isrc":"FR1F91907290","name":"Ce mur qui nous sépare - de la série TV \"Miraculous\"","registered_at":"2026-06-05T17:31:37Z","spotify_id":"6o4XEaMtm51Y21Aqp5xW9F","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac4ab817161d1d477984ac69bd595139c6f90cdfb42c178875397849135fd77. 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/6o4XEaMtm51Y21Aqp5xW9F.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/6o4XEaMtm51Y21Aqp5xW9F.
La chanson des Restos - From "Génération Enfoirés"
{"copyright_id":"0xfed6eb0b21dacb149e0c0b0432eeff831bac62253021b0cfa68edb2f77a0640d","isrc":"FRS011700230","name":"La chanson des Restos - From \"Génération Enfoirés\"","registered_at":"2026-06-07T20:36:39Z","spotify_id":"7dW989RuhmLNSjcynB6ySr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed6eb0b21dacb149e0c0b0432eeff831bac62253021b0cfa68edb2f77a0640d. 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/7dW989RuhmLNSjcynB6ySr.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/7dW989RuhmLNSjcynB6ySr.
{"copyright_id":"0x4a07d7069e1a953f64040b1575fc267f73d0450969eb88ef6fbfd8de7cecf513","isrc":"FRS011700270","name":"Encore un autre hiver","registered_at":"2026-06-11T11:53:35Z","spotify_id":"1nmPrKKYjNnGwYjHsVfsB7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a07d7069e1a953f64040b1575fc267f73d0450969eb88ef6fbfd8de7cecf513. 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/1nmPrKKYjNnGwYjHsVfsB7.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/1nmPrKKYjNnGwYjHsVfsB7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe830e1fdf82e642712ed4a7320f09e258dbab03160c1b4b8455eaa2199d69a8c. 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/2rRe8S26bUA1Vk1LRsDGCW.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/2rRe8S26bUA1Vk1LRsDGCW.
{"copyright_id":"0xed7bd23d36afe1fef9f20816fb5488d8621ec85634f9826472014e5307912a1e","isrc":"FRS011700320","name":"Juste une p'tite chanson","registered_at":"2026-06-23T07:55:31Z","spotify_id":"7MElrCzxrAyne1sMdIzqmk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7bd23d36afe1fef9f20816fb5488d8621ec85634f9826472014e5307912a1e. 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/7MElrCzxrAyne1sMdIzqmk.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/7MElrCzxrAyne1sMdIzqmk.
{"copyright_id":"0x105856df0ff411eda301f0fdd1c38151dd10be907bf49b94e4d9847691bf65bf","isrc":"FRS011700350","name":"La chanson des Restos - Version Kids","registered_at":"2026-06-24T14:58:13Z","spotify_id":"2ElYsv2c4RAHaRpYiwpGNq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105856df0ff411eda301f0fdd1c38151dd10be907bf49b94e4d9847691bf65bf. 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/2ElYsv2c4RAHaRpYiwpGNq.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/2ElYsv2c4RAHaRpYiwpGNq.
La chanson des Restos (From "Génération Enfoirés")
{"copyright_id":"0xfed6eb0b21dacb149e0c0b0432eeff831bac62253021b0cfa68edb2f77a0640d","isrc":"FRS011700230","name":"La chanson des Restos - From \"Génération Enfoirés\"","registered_at":"2026-06-07T20:36:39Z","spotify_id":"1P0020lywhcOmDzueaZsy8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed6eb0b21dacb149e0c0b0432eeff831bac62253021b0cfa68edb2f77a0640d. 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/1P0020lywhcOmDzueaZsy8.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/1P0020lywhcOmDzueaZsy8.