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 0x65caae7b6a2270bac5b8b4a15a7a518db6d7b061fa9a7b2c6d35cb39f2899b35. 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/af37c629-b0fb-43e3-8e7a-c825712f6c09.json and https://artists.proofprofile.net/proofs/artist/af37c629-b0fb-43e3-8e7a-c825712f6c09.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 0xf46bef248b9c70fc5125bddcee79348f091e313d26b9c9a34e74b89d044b23ff. 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/2t3QZWQ92yGjn9TOO6hCOi.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/2t3QZWQ92yGjn9TOO6hCOi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f36c53babbc4171060844c3ddc518353ce0c78abda95c020ec52ed9ca80bd1c. 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/63iYBQAZDyqQYwf91qG6ZX.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/63iYBQAZDyqQYwf91qG6ZX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717220b1f3aee3ee2dd6871192a4442aed077421ea16e673a490569d9f07f579. 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/4wPJ9T4YOHsiM5qJgRA61Y.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/4wPJ9T4YOHsiM5qJgRA61Y.
{"copyright_id":"0x7958d5a76e193fb7affbaf261cc8ee0bcd11b54f49256a3437886b00bde77c1e","isrc":"CA5KR1962565","name":"Lost in Your Eyes","registered_at":"2026-06-06T20:43:38Z","spotify_id":"396f39mqSfRl79WouZMnaF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7958d5a76e193fb7affbaf261cc8ee0bcd11b54f49256a3437886b00bde77c1e. 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/396f39mqSfRl79WouZMnaF.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/396f39mqSfRl79WouZMnaF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d27a152e0c64243e03920d6259db6a88101d8ef43798657257fabe62a22d12. 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/6YmvVFr8GWuuZhePnlSPny.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/6YmvVFr8GWuuZhePnlSPny.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a839850516fd7879f8d0f8c25ca02fafd824f08b2c9258ee88b5a346aa50500. 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/72Xc1ghglGULp6jBXH2eUt.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/72Xc1ghglGULp6jBXH2eUt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b3a80e4a0089013482738d0c335acf9e3e508f204a153426e20f5144067b6d. 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/1eF9hPDh9z4hMYlJoZ9r0U.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/1eF9hPDh9z4hMYlJoZ9r0U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda69228e72c489fae6cdcdc1d371141069ae9a431395d40e8d3111a41a15b8d0. 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/03JuQULu6Iju5xrzpMapY6.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/03JuQULu6Iju5xrzpMapY6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84754d8299ea3b35a7d401793c16d059165ae38143557a23279246978a242b00. 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/6KYwE3gbbaZb5IInq2h0UJ.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/6KYwE3gbbaZb5IInq2h0UJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72b01c720647efc4d08d5b748eb1610bd54bb21a8a983f4bf911a7222398fb3. 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/3hf3LSXqIyZAHMLabLkBzP.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/3hf3LSXqIyZAHMLabLkBzP.
{"copyright_id":"0x7163257e1df255b75cacd7aea5a70b83cdf8e28ecc9bbd7760c7919ab77155a9","isrc":"QZ22B1978040","name":"Mountain Sunrise","registered_at":"2026-06-08T15:47:01Z","spotify_id":"2SYPL1DBcdFBX4DV7SlQP2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7163257e1df255b75cacd7aea5a70b83cdf8e28ecc9bbd7760c7919ab77155a9. 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/2SYPL1DBcdFBX4DV7SlQP2.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/2SYPL1DBcdFBX4DV7SlQP2.
{"copyright_id":"0x34e63a8b31fa2c83731c73ebc972cd1c1e06ea3a0096b109ac96d5b68875d65d","isrc":"ITZN91200008","name":"Prayer - Acoustic Guitar Solo","registered_at":"2026-06-22T06:42:11Z","spotify_id":"3k9KBqatNsrfT72aVywwnk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e63a8b31fa2c83731c73ebc972cd1c1e06ea3a0096b109ac96d5b68875d65d. 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/3k9KBqatNsrfT72aVywwnk.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/3k9KBqatNsrfT72aVywwnk.
{"copyright_id":"0x7163257e1df255b75cacd7aea5a70b83cdf8e28ecc9bbd7760c7919ab77155a9","isrc":"QZ22B1978040","name":"Mountain Sunrise","registered_at":"2026-06-08T15:47:01Z","spotify_id":"3NzCiOJ5rUHtk29viNSkyJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7163257e1df255b75cacd7aea5a70b83cdf8e28ecc9bbd7760c7919ab77155a9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3NzCiOJ5rUHtk29viNSkyJ.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/3NzCiOJ5rUHtk29viNSkyJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72b01c720647efc4d08d5b748eb1610bd54bb21a8a983f4bf911a7222398fb3. 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/4YXAAZtXwTpBmt3jKJb8UV.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/4YXAAZtXwTpBmt3jKJb8UV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717220b1f3aee3ee2dd6871192a4442aed077421ea16e673a490569d9f07f579. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3bdXQcwwYpJd07yEYvgdLn.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/3bdXQcwwYpJd07yEYvgdLn.