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 0x404d12b261cd525e0154cb0528acae52e5c712b868c9c20f4f969618fddbd613. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a70949fb-6159-4bf3-83e7-576c6df91050.json and https://artists.proofprofile.net/proofs/artist/a70949fb-6159-4bf3-83e7-576c6df91050.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 0xdb25a68a0f48b0f222b92a261a5ef6cc69cf145f3875aa714a9908eb86dbf140. 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/7fT0HJw65URZYRjrZdNCpp.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/7fT0HJw65URZYRjrZdNCpp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152c37d70288999adaa675d57eb8e3f646c411886d37bcaac8ff4ed61a2858c9. 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/6vdhXHNT6yKhheq7pxw68E.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/6vdhXHNT6yKhheq7pxw68E.
Pim Pam (with MOJO AF, PsychoYP, Fresh L, Zamir)
{"copyright_id":"0x7fa6d58cc99afb389119f4b9d86ed1935b501d56a816633fc416c031de8cf7f7","isrc":"QM6N22282699","name":"Pim Pam (with MOJO AF, PsychoYP, Fresh L, Zamir)","registered_at":"2026-06-18T15:01:26Z","spotify_id":"15Qgg2toavyaAWofIAb9Kp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa6d58cc99afb389119f4b9d86ed1935b501d56a816633fc416c031de8cf7f7. 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/15Qgg2toavyaAWofIAb9Kp.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/15Qgg2toavyaAWofIAb9Kp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505bf2ea4f05d3fc1ca415915b3a7673b86e0aa89a91fec95b70215081de7e87. 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/5OAzOwPHeHBrIoJC0nluKR.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/5OAzOwPHeHBrIoJC0nluKR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d375a53f6ece0ffec5b77634812f49391994dafa081b0e00c78c3d9e70c29e1. 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/7LD1W44Y7IfcIfzWGLyvFg.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/7LD1W44Y7IfcIfzWGLyvFg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb25a68a0f48b0f222b92a261a5ef6cc69cf145f3875aa714a9908eb86dbf140. 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/23umGohtiLyXcG8unNY1K3.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/23umGohtiLyXcG8unNY1K3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d375a53f6ece0ffec5b77634812f49391994dafa081b0e00c78c3d9e70c29e1. 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/6Ns8jZEbCX7HK7PzBqiMnS.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/6Ns8jZEbCX7HK7PzBqiMnS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb25a68a0f48b0f222b92a261a5ef6cc69cf145f3875aa714a9908eb86dbf140. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5D3LmJICr7sJWIX32G0EmP.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/5D3LmJICr7sJWIX32G0EmP.
{"copyright_id":"0x5fdf49e8bdd507f073cea12d024dc3f674570f63589c3a5de62ca9a0f423a9ae","isrc":"US23A1536757","name":"A. Iverson","registered_at":"2026-06-25T21:05:01Z","spotify_id":"6PujrminyVbBTQrhnSC1SU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdf49e8bdd507f073cea12d024dc3f674570f63589c3a5de62ca9a0f423a9ae. 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/6PujrminyVbBTQrhnSC1SU.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/6PujrminyVbBTQrhnSC1SU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6853b1c89dfab4a0d552fc131e0b921fb5fddb0c7cda874f982cac854644ce. 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/5ndG2G6WeEJy59y5ESdDwo.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/5ndG2G6WeEJy59y5ESdDwo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7023c246d7269cc3bb553f9cda4c90c128fceff8671e17c40a70fad0d14eed5c. 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/4KmA4ufnUVZ2mvVtfrCUGV.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/4KmA4ufnUVZ2mvVtfrCUGV.
{"copyright_id":"0x731e482f8f906c0dded0fe0aa3fa31f8bba54b73191ace74da3f13e4e5b787dd","isrc":"US23A1536178","name":"LUV HRTS","registered_at":"2026-06-21T00:14:50Z","spotify_id":"5KXZZg0zFmF7Mtfpe1GZQ6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731e482f8f906c0dded0fe0aa3fa31f8bba54b73191ace74da3f13e4e5b787dd. 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/5KXZZg0zFmF7Mtfpe1GZQ6.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/5KXZZg0zFmF7Mtfpe1GZQ6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c1f979f268e5efda99265308ee5b1d06ccc288d091786d2734617368421b3c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1hjlj7wOoWAddW70uV6Pty.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/1hjlj7wOoWAddW70uV6Pty.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df210692967ad70edd09b51b94a4a5d8411f69bf6c7134fdeb82e849a4174f8. 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/3Bx9tUJW8pvaJ6LalL9ASL.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/3Bx9tUJW8pvaJ6LalL9ASL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428b313607f5ce85f0686a0bd385586e1451181a652152fc3db3c0916a560fba. 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/2fWZ4DAGCpSqrox25PTBQf.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/2fWZ4DAGCpSqrox25PTBQf.