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 0x1ccabf0ebc93e61110a6d9672280d4c57ab5ab3f56c9da5da98996e5b932546b. 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/148b9ac0-a7b2-4853-ad5d-d5e70d3383b1.json and https://artists.proofprofile.net/proofs/artist/148b9ac0-a7b2-4853-ad5d-d5e70d3383b1.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 0x0b764c8bacf845a4533c53ad4ca9196e4c20a20f1495abcd827bf0b1b9df962e. 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/1tNTim1EMqV5UXIsaeaRkS.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/1tNTim1EMqV5UXIsaeaRkS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5a6e09074ae36c3eeaa7550dba296282d137f5f59c8e3ba687a060a48c3aad. 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/5vC8UAOHeG95ehRzZChniB.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/5vC8UAOHeG95ehRzZChniB.
{"copyright_id":"0x258ed2ece0ce949254c53c5a80489b9a1abac98d60a94ed1ef40b00b5a6cd064","isrc":"QZGLS2417193","name":"Papo de Ficante","registered_at":"2026-06-09T17:44:39Z","spotify_id":"6AH1nWXr3KzpXCQh6dkPze","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258ed2ece0ce949254c53c5a80489b9a1abac98d60a94ed1ef40b00b5a6cd064. 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/6AH1nWXr3KzpXCQh6dkPze.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/6AH1nWXr3KzpXCQh6dkPze.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5797b32bc3be627df95f07c15d4b10225acd03971fbc4bd6a7155e23fe499759. 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/37EuvKYWkLeFEMbE4SLs2u.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/37EuvKYWkLeFEMbE4SLs2u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ff7a5966e97736e27980361f2377602624eeba33c4eb14a3dfe4148a931f51. 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/2KKDyj3iRy4hriX2Nrfv1d.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/2KKDyj3iRy4hriX2Nrfv1d.
Na Onda do Lança, na Onda do Boldo, Ah Zé da Manga (Tudo no Sigilo) [Remix]
Na Onda do Lança, na Onda do Boldo, Ah Zé da Manga (Tudo no Sigilo) - Remix
{"copyright_id":"0x635a9df3d53390126f8c57c2de37d86ee8feebdc34442feb470edf6c3fe0c55d","isrc":"BXP5Q2300008","name":"Na Onda do Lança, na Onda do Boldo, Ah Zé da Manga (Tudo no Sigilo) - Remix","registered_at":"2026-06-09T08:37:58Z","spotify_id":"0YQt2beKEB4YoZ9inzA3vR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635a9df3d53390126f8c57c2de37d86ee8feebdc34442feb470edf6c3fe0c55d. 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/0YQt2beKEB4YoZ9inzA3vR.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/0YQt2beKEB4YoZ9inzA3vR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f1efb2a43d71cdd9c788ccf30d95e1ff76749b7f674226c9492766483bc938. 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/2lChchDueyqLRqI1H6PQAG.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/2lChchDueyqLRqI1H6PQAG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd047ae04fbac875c35eba18d731b1e074d841c8c3072a66ab6ac1d669de134. 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/5McDuAKxRyB6Gz3b2CbtIt.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/5McDuAKxRyB6Gz3b2CbtIt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710ab15b2eac9ac33c550b09846aaf632d846496509f91af791223f8efe988d5. 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/4sA8O39vlhL5wSRVUhoEVS.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/4sA8O39vlhL5wSRVUhoEVS.
{"copyright_id":"0x774f6711593e6a5075ed71cef3e6fa5dc87bedc070429c0e9522106bf7a4f0a4","isrc":"BRUM72200730","name":"Quebradeira Das Amantes","registered_at":"2026-06-20T02:03:54Z","spotify_id":"5GEjLHewMardIq9s6w2CQ6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774f6711593e6a5075ed71cef3e6fa5dc87bedc070429c0e9522106bf7a4f0a4. 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/5GEjLHewMardIq9s6w2CQ6.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/5GEjLHewMardIq9s6w2CQ6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b764c8bacf845a4533c53ad4ca9196e4c20a20f1495abcd827bf0b1b9df962e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3esifxXwVPzh08la25SwGx.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/3esifxXwVPzh08la25SwGx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa198ea3e17e507f638d16e45a41237831f08074ebd18d1b71fa0d9abb3020a2c. 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/7FOmIbZaIVUstz1DWyW5ij.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/7FOmIbZaIVUstz1DWyW5ij.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed797a56a232c29079b3e4c70ecb5c997ed36829338dceaff752522349eedd4. 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/3zOM8olfYjhEY4gARuV8gU.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/3zOM8olfYjhEY4gARuV8gU.