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 0x3dc4d6f5677cd8a02424d9d0b03e624c6c86fe2c153627f3747351ef6ad35d20. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bea5771-cc2c-4f8c-a461-12332040bca9.json and https://artists.proofprofile.net/proofs/artist/5bea5771-cc2c-4f8c-a461-12332040bca9.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 0x88ae5f49600c015dcbd7c6332795dc72b38a8d0fa5ed33a5d6975a8526b2e1c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6IndfyVOKvVJrNdb0NPtPB.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/6IndfyVOKvVJrNdb0NPtPB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226dd8c8b5f7c2429e28187ec1adb6423c5e4403806319f93487b4b2ef34c0a7. 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/0xkM5VWYGqrkBsB6h7QvRR.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/0xkM5VWYGqrkBsB6h7QvRR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ae5f49600c015dcbd7c6332795dc72b38a8d0fa5ed33a5d6975a8526b2e1c8. 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/7d4MKXX3schPcogz7YQK4x.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/7d4MKXX3schPcogz7YQK4x.
{"copyright_id":"0xc90b0b55697285a7cc44eeaf14f216f3c672c5f2d9f339a5b95b98ead3410d6b","isrc":"CLA472300030","name":"Nada es para siempre","registered_at":"2026-06-27T05:59:37Z","spotify_id":"2ML9WD4YHqZvr9DLckmmUp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90b0b55697285a7cc44eeaf14f216f3c672c5f2d9f339a5b95b98ead3410d6b. 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/2ML9WD4YHqZvr9DLckmmUp.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/2ML9WD4YHqZvr9DLckmmUp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30430be55972f8b67ac36b54f298e770ebc907d52a9fcb5fa05d50e66fdd40a4. 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/6mOigSF51U0beb5t0OkRa9.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/6mOigSF51U0beb5t0OkRa9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3440eaa97d2f319772a6c70879606d3df3516005ec5e7fbbc0818d8a119cecb0. 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/2ILXegrzNJlufxO8fI1OMn.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/2ILXegrzNJlufxO8fI1OMn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3440eaa97d2f319772a6c70879606d3df3516005ec5e7fbbc0818d8a119cecb0. 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/57f2X9Am4tNzizcxVIcPy8.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/57f2X9Am4tNzizcxVIcPy8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb5c47992094d132f12b7a6765858397578ba77694e5c8067088f106bbef1c7. 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/7mrwezqqEBxtcE3IU2XRCH.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/7mrwezqqEBxtcE3IU2XRCH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d3c52776d804ad50650acd53253cd6942450448b21e1afc003069543e2b6ef. 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/6E5ibkGbxh6a3pk9B6Cuhf.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/6E5ibkGbxh6a3pk9B6Cuhf.