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 0xf21e07ed4e461b190f0a00077d1b14ff8b0b5a7ddaeaa65a6619a6a5bf1db2df. 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/faa29a3b-cbfc-468f-8b59-0a173e144bbf.json and https://artists.proofprofile.net/proofs/artist/faa29a3b-cbfc-468f-8b59-0a173e144bbf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x81b1eece3ddc9bdf210db1d119241fcfa2e5ae284574bede4c7104028f98a24e","isrc":"GBLFP2472235","name":"Carlos Coches","registered_at":"2026-06-07T16:00:33Z","spotify_id":"1p60CWIETcntYcKn4av8aZ","type":"track"}
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 0x81b1eece3ddc9bdf210db1d119241fcfa2e5ae284574bede4c7104028f98a24e. 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/1p60CWIETcntYcKn4av8aZ.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/1p60CWIETcntYcKn4av8aZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfd4b1c4fa862f8b4264a9ff5c72845dfa4b8f5faeca5b34fd57cc15a7cdf71. 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/2lfVQhsPwSsqDbEAKfPOSJ.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/2lfVQhsPwSsqDbEAKfPOSJ.
{"copyright_id":"0x8ea2580f6ce2e8fb0426790e8e072ef0a8eeae9fd34c951a6890059dce548e4d","isrc":"GBLFP2472236","name":"Canción Aburrida","registered_at":"2026-06-08T23:44:27Z","spotify_id":"5J44aSjvTPreWDF7vzumiO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea2580f6ce2e8fb0426790e8e072ef0a8eeae9fd34c951a6890059dce548e4d. 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/5J44aSjvTPreWDF7vzumiO.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/5J44aSjvTPreWDF7vzumiO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0698ee457e7d300d62e8c09e811773c554a5b2ce6915fc17488908a0c4a06df8. 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/27HuW4I6my8OHkg8Zf4eyo.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/27HuW4I6my8OHkg8Zf4eyo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90831d1e7b17386926831e6e915fbe8014bbc253cc2234ec4a3934c5694969e. 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/4opAEb0FYODvlkzE0QDNXB.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/4opAEb0FYODvlkzE0QDNXB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f7d5a8ddd60fe5e8d5f14387cbf61ca5e4e650b03c214dc33ef7f84ce0d3d9. 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/2aqi97yfUUP9lWhl3CZCIl.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/2aqi97yfUUP9lWhl3CZCIl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8384ec879a78c2a26f383b673e42d04ee70085260f4ef1d99237549c5a5d60a1. 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/62i93673peLGcJMqOpK7Bs.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/62i93673peLGcJMqOpK7Bs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d365b64d913090383635460c3a9b4be54dcd76476764e5bd2b2a5c0ad07b15. 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/0eU2Na15KeQznYkIE4n0VN.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/0eU2Na15KeQznYkIE4n0VN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2139c0778055945d709896e4d3d4511466c60797e485a3fa769bfe2d25348e. 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/0fx0Ys7y4dxiRjVDMxm6YL.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/0fx0Ys7y4dxiRjVDMxm6YL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b1b07c4b216096be379529922f0fac080ed3e1c95b75211bd3e54e37180baa. 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/5aCrxfASotYIQPV6JpWQfm.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/5aCrxfASotYIQPV6JpWQfm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27aefb60640cde7d3580464f6e47824043a8830e4ef6b6b5d8b79751b575640. 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/0fy2ravHzASz9Dnu3dnwUB.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/0fy2ravHzASz9Dnu3dnwUB.
{"copyright_id":"0xe2cbe989e9722ebc503ae4f3fe91591ac798c60fe0f3f3d11e9a594837440bff","isrc":"GBMA22479440","name":"Ni Un Palo Al Agua","registered_at":"2026-06-05T06:56:21Z","spotify_id":"6Leb7iel2m1lIYxejHUK0O","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cbe989e9722ebc503ae4f3fe91591ac798c60fe0f3f3d11e9a594837440bff. 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/6Leb7iel2m1lIYxejHUK0O.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/6Leb7iel2m1lIYxejHUK0O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bef9f978cb8ab3d6ba047850d03c9d065ea9e066e635378f2c951a3ad156d4d. 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/7AIRKJYwx05jWF0XZ1nTUF.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/7AIRKJYwx05jWF0XZ1nTUF.
{"copyright_id":"0x82d365b64d913090383635460c3a9b4be54dcd76476764e5bd2b2a5c0ad07b15","isrc":"GBLFP2440648","name":"Ayer Vino Messi","registered_at":"2026-06-06T20:00:56Z","spotify_id":"7qKlQnjdKLwEsxMuMetDBv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d365b64d913090383635460c3a9b4be54dcd76476764e5bd2b2a5c0ad07b15. 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/7qKlQnjdKLwEsxMuMetDBv.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/7qKlQnjdKLwEsxMuMetDBv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0698ee457e7d300d62e8c09e811773c554a5b2ce6915fc17488908a0c4a06df8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2cMDOcDbQPt9oYU1zST7Zk.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/2cMDOcDbQPt9oYU1zST7Zk.
Sonido de Barra de Metal Cayendo al Suelo (Remix)
Sonido de Barra de Metal Cayendo al Suelo - Remix
{"copyright_id":"0xc9ce83c692a471ad4ac34cca4a64efb414156bb9dab7425eec4b59334dc12c27","isrc":"GBLFP2322530","name":"Sonido de Barra de Metal Cayendo al Suelo - Remix","registered_at":"2026-06-08T15:45:33Z","spotify_id":"1GBtSgWj6Me881LiqIR5sf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ce83c692a471ad4ac34cca4a64efb414156bb9dab7425eec4b59334dc12c27. 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/1GBtSgWj6Me881LiqIR5sf.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/1GBtSgWj6Me881LiqIR5sf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfd4b1c4fa862f8b4264a9ff5c72845dfa4b8f5faeca5b34fd57cc15a7cdf71. 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/5PudG8uRlc2DMGCgsezAoI.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/5PudG8uRlc2DMGCgsezAoI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055e36319fc7802a5287e632a9b7d4935ade95ed1bb9833830b9bc59f0202625. 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/7qcVq2SMK8ruZEgo8yd0NR.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/7qcVq2SMK8ruZEgo8yd0NR.