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 0xc7e56ede534747aa34d850b6d1e7da5896d52cbd66b276bc977e9bb246a5ce97. 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/dac2b18c-f24e-4a6b-91c5-a5298c6e8059.json and https://artists.proofprofile.net/proofs/artist/dac2b18c-f24e-4a6b-91c5-a5298c6e8059.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 0x8e81ea6c9ae14e62eaa0bb15be437bc29f44134802ca746c24d6670475ed3dd8. 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/0X75frZBVVhOeCO1CN3C71.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/0X75frZBVVhOeCO1CN3C71.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b939d1c5e607dbdb23c1a66072ec3c62d30f849be92f4f476ee3888a3d3598c. 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/6Z8opfDvMHPn1jnMmV6qXt.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/6Z8opfDvMHPn1jnMmV6qXt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4769a466d477de0967b8c61afe54781d2ce7c795b38ba244a609b0d582f1503. 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/3aUv5xMwV5sarC3wYxe5Mw.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/3aUv5xMwV5sarC3wYxe5Mw.
{"copyright_id":"0xb2a69a4e530866609dac4397cf5409178a5f760bdf4bf93d37b3d7ce6ececdb1","isrc":"BCO682100005","name":"Coffee Jam","registered_at":"2026-06-10T08:05:44Z","spotify_id":"0AQkUvWMwuAGiECWhScOXt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a69a4e530866609dac4397cf5409178a5f760bdf4bf93d37b3d7ce6ececdb1. 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/0AQkUvWMwuAGiECWhScOXt.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/0AQkUvWMwuAGiECWhScOXt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3085bd782c410898828d4eb584ab86c662b77a087393ed4a73cf1cc0ca30da6e. 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/4T7RgTRER1NAbiudcbj7EG.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/4T7RgTRER1NAbiudcbj7EG.
{"copyright_id":"0x24ebd4bc96b9cfdde25d07924c8d487bd7ca0f0a91a1fba1e706f0edfa6eb86c","isrc":"CH7812411005","name":"Garden Whispers","registered_at":"2026-06-06T15:21:16Z","spotify_id":"1bGQJrTWN1TfBW21uSIaKy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ebd4bc96b9cfdde25d07924c8d487bd7ca0f0a91a1fba1e706f0edfa6eb86c. 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/1bGQJrTWN1TfBW21uSIaKy.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/1bGQJrTWN1TfBW21uSIaKy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd399bb977e9595185345878037f8288c700d65e95660474df616e15ea182bc0. 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/1LQtQtEyAOdq4jbwProwBg.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/1LQtQtEyAOdq4jbwProwBg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907e40cc8cae5cc038cd25f1e67c2c05f4adfe0d394c0085a38ba62c231c3883. 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/66fQiqnmyJcSrsT52UJBuj.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/66fQiqnmyJcSrsT52UJBuj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cde1fd0e1868fae725bd39ecab3d236f8298c3bc7e57568aff1de9a483790b9. 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/0e7Zh5sczPvNV40Y9f5ujU.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/0e7Zh5sczPvNV40Y9f5ujU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907e40cc8cae5cc038cd25f1e67c2c05f4adfe0d394c0085a38ba62c231c3883. 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/0RyGoNqRcFDhM2rCFggGan.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/0RyGoNqRcFDhM2rCFggGan.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe247112ae4930c5a57ba3354874d95a4a5e1de125bd09e0a3a9b63966f53752b. 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/7CyeuyJTmcqs0OnJJy53wA.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/7CyeuyJTmcqs0OnJJy53wA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39c6c34c6bd1a315f9bc43b0c2093165e026031a32e78a1f100c3d36ceb9ff2. 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/7Gz9Qkym2gzXTATpPniXg4.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/7Gz9Qkym2gzXTATpPniXg4.