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 0xc0733006394bbcc248cd4f760d783e13ab98451a5299464d5e7bf1e574188f89. 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/09e9a5c4-134d-4509-9004-5cba711ebce2.json and https://artists.proofprofile.net/proofs/artist/09e9a5c4-134d-4509-9004-5cba711ebce2.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 0x971500b95f60ea5c0277cc84924ec0d3edea42abb0875b2ae4e582e10f26f40b. 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/0yAAwSTtc60mLGsRiulDpZ.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/0yAAwSTtc60mLGsRiulDpZ.
{"copyright_id":"0xc9daacc1c51c2375f5d17937cd6b09e2a608de635ff8c257504321508d89eb5a","isrc":"TCAEQ2097022","name":"Te Quiero Mas - Remix","registered_at":"2026-06-07T13:43:37Z","spotify_id":"4g3o9iHcLpv9zqM2RJPEKV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9daacc1c51c2375f5d17937cd6b09e2a608de635ff8c257504321508d89eb5a. 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/4g3o9iHcLpv9zqM2RJPEKV.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/4g3o9iHcLpv9zqM2RJPEKV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450411967875a640defa4c4e441ceb2d9ee07a709ea5383993980a3f5b04b593. 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/2Zydvopbdy94Em2DLZMso1.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/2Zydvopbdy94Em2DLZMso1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ed9f372c1a192cdc5392b78cb749bce80f4544d6906953f668de48f2cdd9d1. 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/18C8sa4r83bsAhjICIr2K9.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/18C8sa4r83bsAhjICIr2K9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0267bfc48dd3d291ced51ab3700bd46e137c276f342d311bb3d1f4b17bf5227. 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/0hWLbSKDbg2iBhZg8cIRiT.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/0hWLbSKDbg2iBhZg8cIRiT.
{"copyright_id":"0xba89e1db4ed5ecb5abc2e5b50e2b6fcfad262cbb78e868a4fe16c11c9ba759ba","isrc":"US7VG2292226","name":"Hasta Bajo","registered_at":"2026-06-21T23:17:52Z","spotify_id":"2UjKBHL3jtnunvflj2WUPz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba89e1db4ed5ecb5abc2e5b50e2b6fcfad262cbb78e868a4fe16c11c9ba759ba. 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/2UjKBHL3jtnunvflj2WUPz.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/2UjKBHL3jtnunvflj2WUPz.
{"copyright_id":"0xae917bdd02e4afa1a4105d4c73d5c207763d058eeb4f0bbfab47bfcfe3a2d9df","isrc":"QMFMF2330588","name":"EL SAFARI Y LOS TETEOS","registered_at":"2026-06-06T23:49:53Z","spotify_id":"3yyZSx06qkzdZA63qcCeko","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae917bdd02e4afa1a4105d4c73d5c207763d058eeb4f0bbfab47bfcfe3a2d9df. 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/3yyZSx06qkzdZA63qcCeko.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/3yyZSx06qkzdZA63qcCeko.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572a6ad422ff5c407546e579714d1bf06ea417c1ee1c84b896b07e5ad628f824. 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/1h2hnAmxkXoF7ein8SflYo.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/1h2hnAmxkXoF7ein8SflYo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772b047c22e93295f7bfa5643c23ef4f0c504f501012ff49be45dc0beb34e69e. 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/0tweFybzhOk9S6Bq4M2agD.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/0tweFybzhOk9S6Bq4M2agD.
{"copyright_id":"0x2d3247acc8aeee2c4da862b51dff35a8c0f1706fe112677baa4a52c8056d894b","isrc":"QZMEV2071385","name":"Harto De Ti","registered_at":"2026-06-22T20:26:41Z","spotify_id":"7eGVXlalpI2gdKkf2iWcb0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3247acc8aeee2c4da862b51dff35a8c0f1706fe112677baa4a52c8056d894b. 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/7eGVXlalpI2gdKkf2iWcb0.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/7eGVXlalpI2gdKkf2iWcb0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe29a27479c166878ddd9ef3a9e46bc9dda2effce4f6d54fec08eb535fd86b1c. 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/51Xyu6SPe0Vs7U9hiv9zga.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/51Xyu6SPe0Vs7U9hiv9zga.
{"copyright_id":"0xc9daacc1c51c2375f5d17937cd6b09e2a608de635ff8c257504321508d89eb5a","isrc":"TCAEQ2097022","name":"Te Quiero Mas - Remix","registered_at":"2026-06-07T13:43:37Z","spotify_id":"4s59UVhUYWXkwKIYexWEIw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9daacc1c51c2375f5d17937cd6b09e2a608de635ff8c257504321508d89eb5a. 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/4s59UVhUYWXkwKIYexWEIw.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/4s59UVhUYWXkwKIYexWEIw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df5fbf111b08f3b96b4e8e9e1c84717e8782c7b51757c16ee75572474d46edf. 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/6u0W2ZTs9AGohSuPlTUZce.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/6u0W2ZTs9AGohSuPlTUZce.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d872a579e76e122fcab66df846436b049025df245e638e339e517577e985fd9. 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/3KzDNTsi7IKoTSQ1qSYv3C.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/3KzDNTsi7IKoTSQ1qSYv3C.