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 0x84918443ea97e447dad0f7ecbab5bfcffe80a62003f7eb95f72afb8bd6f29004. 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/9d1eb847-28fd-4790-b088-d5f9582f8915.json and https://artists.proofprofile.net/proofs/artist/9d1eb847-28fd-4790-b088-d5f9582f8915.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 0x8db7bb1fe3c212f3964a142669b12aeb02d72c2ab10795eb3a005137e2ac53bf. 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/7aHeT4Op8R1irTnXu7BspQ.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/7aHeT4Op8R1irTnXu7BspQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd696c6b8d627d3b2076b858b9e1d079c79c44ee5110723485dc8bff2fd3fd817. 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/2cR9mNkrBlgdjrd3gZmd1R.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/2cR9mNkrBlgdjrd3gZmd1R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3d9c8b95d476a0a874820aaf0cf9afa8570da57a318c371e491d3c0f7bc410. 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/4Ykwihy5fnD9e82DRlHORj.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/4Ykwihy5fnD9e82DRlHORj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e8e57912f1bbdccfc8a506d3561962410dda576130ded05bbc748efabb611f. 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/6O0VbCyE13A6b4RWwaD2Sv.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/6O0VbCyE13A6b4RWwaD2Sv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623888c4ae1774e6f86093cd58486c996cf36105c1449e6d8d4c0e8f525397af. 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/6VI2oXMJoDz8FywhcqacNr.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/6VI2oXMJoDz8FywhcqacNr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afe04a5241f95bfc0e3020a223fbba49eff2a0630b316de2b0cbf9025c8a557. 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/69Xei61Wht8xFO0XynsyMm.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/69Xei61Wht8xFO0XynsyMm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9673a691974e0fe95f76e2557a0b1cf1aef44cfb37bca9a9d5cf95cfb2c81774. 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/4Ab5f5xadihYVLaIA7iFmW.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/4Ab5f5xadihYVLaIA7iFmW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08de7926996bf208c7e563460942af31103a635c1a8b0093aa0e030c73aa9e0. 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/4TLDPZqC3PvqZEMlLUrlj3.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/4TLDPZqC3PvqZEMlLUrlj3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dc8b1c3843cdecfb154dd4cf4ae8700a4ccc2728bee992236678c49b846092. 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/4eFvSzp6JmVVEPyzZynPQ9.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/4eFvSzp6JmVVEPyzZynPQ9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7334a686c0564c82b9e9132d50b41664f01687a9739cdb0169baffa9464f6b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:35:01Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/52arpANqA5iW4b4lV22QfU.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/52arpANqA5iW4b4lV22QfU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be2f54034cc3d294a2eecc27c9f35df300aa8cf6f36613985572618dc50ce36. 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/4m4lW36OyRBgF37zIeAdSB.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/4m4lW36OyRBgF37zIeAdSB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605e3500f6b52de8adf1d1d543004bf70df693ffe262c0927a80026055592d10. 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/476GjsofRrl09uOSRfsZih.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/476GjsofRrl09uOSRfsZih.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e318293f9b33b2f5783498a1a842aa6797a31b6bc49480c4b9a32839cd4b3e1. 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/5KvzicJ5LUgMJQ5Ycwt8d9.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/5KvzicJ5LUgMJQ5Ycwt8d9.
{"copyright_id":"0x1a442bb21a537694e9db4259cc174fa813a2e8b53d6461bc9a34780db817e07f","isrc":"PLV402301644","name":"Siedzę Sam - Dla fanek dopaminy","registered_at":"2026-06-23T12:06:57Z","spotify_id":"04uDWuc5sahTebKLOmP1SD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a442bb21a537694e9db4259cc174fa813a2e8b53d6461bc9a34780db817e07f. 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/04uDWuc5sahTebKLOmP1SD.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/04uDWuc5sahTebKLOmP1SD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fe8eeebdd4d6e36a7fb20d5e9c6cd5b4823d84098ab32b93d858342d3eb981. 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/4PAXlW8ykcpcJyIuYX9IPG.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/4PAXlW8ykcpcJyIuYX9IPG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fdd16bbb04a10c69810dcab8b7eb053ad20e653d4ff36ac2ad45e02bb1c973. 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/33K46DEa3n46MVOuIrecg7.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/33K46DEa3n46MVOuIrecg7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349d2c20c4d75266c6d97a9754948d55ad08a138d92c1bb69b628ea6e51b0a56. 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/6xzUYF5lZxuGuNvX3IZ6kh.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/6xzUYF5lZxuGuNvX3IZ6kh.