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 0x948dc88d0e130e24f58e50b30984610607168df8589ae36572319f2d92df7bcc. 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/01be8589-b611-4bd7-ac86-0bc15d7fcd04.json and https://artists.proofprofile.net/proofs/artist/01be8589-b611-4bd7-ac86-0bc15d7fcd04.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 0x57226f5b6f49818142820d01026861d646dc3f1379a35c2f530d3591aacf550b. 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/5GtwpuqACRMZUbxXshqf2F.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/5GtwpuqACRMZUbxXshqf2F.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f59b4cda484329e548c77b5723b7d1ef945d582937750c1d7bd513aaa994dcc. 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/6DFVMz46X3oKTQxijDtY4l.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/6DFVMz46X3oKTQxijDtY4l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1cb62f363403658ee8b5f1f166d3ae1195048f57bd6035379e85e8abe29ee8. 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/4Pl8vZ49kgk8fjMJYU1Nlo.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/4Pl8vZ49kgk8fjMJYU1Nlo.
{"copyright_id":"0x8258dba66e19e58deb42bacf52c4af298478254a62643f878f1efb9681b8bb7c","isrc":"QZ4E71600045","name":"Nobody Like You - Live","registered_at":"2026-06-21T11:47:59Z","spotify_id":"6l3sErBbgG6HXR7NZAXcag","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8258dba66e19e58deb42bacf52c4af298478254a62643f878f1efb9681b8bb7c. 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/6l3sErBbgG6HXR7NZAXcag.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/6l3sErBbgG6HXR7NZAXcag.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63ea798e6142d4c9c0b41c48512ace283389e473cf5542f884606a9d1a6b0fe. 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/3YmldiK3kNEtRzKK8ukQnG.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/3YmldiK3kNEtRzKK8ukQnG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30503d0e8c40f0b37963ed519d93a7bf29c8fc20841fc2982369f69ed11e7570. 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/3dA1iSy2lCxD85SSccJLqm.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/3dA1iSy2lCxD85SSccJLqm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6576b101e4039da658324c662718149c319f4b3e28ece241b87125e6b1d15a5e. 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/44XWufYevvlY68goYwiJVK.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/44XWufYevvlY68goYwiJVK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7be4a71af954b6475a5876d1d473bc6e4e65d43db26a8e0976453660687801. 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/53clfGSvuspfJUyz0VlfgD.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/53clfGSvuspfJUyz0VlfgD.
{"copyright_id":"0xa27292b5c333d57a014c2be1e3a89201479a54d88abca18067cbfd14eccd0bc1","isrc":"QZ4E71800110","name":"Open Heaven (Reprise) - Live","registered_at":"2026-06-26T03:10:09Z","spotify_id":"3cqvO5iIMt0KjAfDjMHWwX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27292b5c333d57a014c2be1e3a89201479a54d88abca18067cbfd14eccd0bc1. 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/3cqvO5iIMt0KjAfDjMHWwX.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/3cqvO5iIMt0KjAfDjMHWwX.
{"copyright_id":"0xc2f04293a532abd7f0544ec5bbf2f0f32df2c0c51ff55479ed3048a2bed5d684","isrc":"QZ4E71600042","name":"Thank You Medley (Part 1) - Live","registered_at":"2026-06-25T08:10:23Z","spotify_id":"40unIxqMoY0jRtqHLBUOBr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f04293a532abd7f0544ec5bbf2f0f32df2c0c51ff55479ed3048a2bed5d684. 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/40unIxqMoY0jRtqHLBUOBr.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/40unIxqMoY0jRtqHLBUOBr.
{"copyright_id":"0x96a2f05f15da6eb2abb35acb9c50ce6fa4d539945e6446aad3577ef1d2e8f388","isrc":"QZ4E71600048","name":"Nobody Like You Lord - Live","registered_at":"2026-06-11T20:21:23Z","spotify_id":"1Xf3gQwhzEdfvG00TFP5Co","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a2f05f15da6eb2abb35acb9c50ce6fa4d539945e6446aad3577ef1d2e8f388. 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/1Xf3gQwhzEdfvG00TFP5Co.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/1Xf3gQwhzEdfvG00TFP5Co.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57226f5b6f49818142820d01026861d646dc3f1379a35c2f530d3591aacf550b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0YRMoVqvnAGzDlnYF2yIWq.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/0YRMoVqvnAGzDlnYF2yIWq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98146f6dd96f451088a0e4c2d6e3458d35f8fd3dd8d17eb7f238a72960dffa29. 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/0uygY6jeNxPfqfhKUVd6L0.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/0uygY6jeNxPfqfhKUVd6L0.
{"copyright_id":"0x96a2f05f15da6eb2abb35acb9c50ce6fa4d539945e6446aad3577ef1d2e8f388","isrc":"QZ4E71600048","name":"Nobody Like You Lord - Live","registered_at":"2026-06-11T20:21:23Z","spotify_id":"2feFXXm9MYdbC14Q2LL8Pc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a2f05f15da6eb2abb35acb9c50ce6fa4d539945e6446aad3577ef1d2e8f388. 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/2feFXXm9MYdbC14Q2LL8Pc.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/2feFXXm9MYdbC14Q2LL8Pc.
{"copyright_id":"0x8aaa533944b5f32d2b9e66afb389153b2d40b2cc3e62b0102066fb6a8724e2a7","isrc":"USM2C1800301","name":"Nobody Like You Lord","registered_at":"2026-06-06T20:00:16Z","spotify_id":"15qQiijWBqV5p5GxApeLD0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaa533944b5f32d2b9e66afb389153b2d40b2cc3e62b0102066fb6a8724e2a7. 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/15qQiijWBqV5p5GxApeLD0.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/15qQiijWBqV5p5GxApeLD0.