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 0x145dd833cf535cb7898c6b1d2db26fb7f3ad207ebcc44ceabc902d31c82330d4. 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/e4ea094d-d83d-452f-b308-023320402878.json and https://artists.proofprofile.net/proofs/artist/e4ea094d-d83d-452f-b308-023320402878.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xa6449c1bebff1573901d8b86716c0b8650c842b1dbfd0e51f0a6ff3aaa62fc47","isrc":"FR10S2181296","name":"Still From The '90s (The Manifesto)","registered_at":"2026-06-20T05:56:21Z","spotify_id":"1v9LDXLAIpeKH5XqB98pTC","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 0xa6449c1bebff1573901d8b86716c0b8650c842b1dbfd0e51f0a6ff3aaa62fc47. 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/1v9LDXLAIpeKH5XqB98pTC.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/1v9LDXLAIpeKH5XqB98pTC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482a9a1cb03a0f192a54d0bb66fba871c93eabddc1df4c81bc546148fb66bdf1. 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/2tWJcrcSPcn6m2Yp0YCEFu.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/2tWJcrcSPcn6m2Yp0YCEFu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5153bcb6ddb681b3af5cf088a240006693604c43af46bc575f60f5a704d6cc64. 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/2f7vGPQsMcyPfE8tablUZb.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/2f7vGPQsMcyPfE8tablUZb.
Sambao - Jerome Sydenham's Ibadan Deep House Mix
The Spirit of Ibiza - Massimino Lippoli Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2515bd3add52d8adfb954d21a871e86d7ac8078e9e666352b365f057121da7d1. 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/5gGK0YCCeVm14DqQBfkepq.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/5gGK0YCCeVm14DqQBfkepq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8333f5b2dc32c5e657a390b408f92a8781eb0c7c4302024032f5aa10e7f072. 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/3qA4qAcI2kfPVHjsjFqCId.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/3qA4qAcI2kfPVHjsjFqCId.
{"copyright_id":"0xf81e10b42673e2c57eb4018131b00820208cdf091ae1786e7e3f89f6f7c63a79","isrc":"FRX762119415","name":"Metaforico malinconico","registered_at":"2026-06-20T07:05:51Z","spotify_id":"5BQv5HnbgSFoPaxFzTbDtv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81e10b42673e2c57eb4018131b00820208cdf091ae1786e7e3f89f6f7c63a79. 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/5BQv5HnbgSFoPaxFzTbDtv.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/5BQv5HnbgSFoPaxFzTbDtv.
{"copyright_id":"0x6e473fd56f2a8a157d73b4ea59d2d2323a27421d55dfa6f8986db94ca3851afc","isrc":"FRX762119420","name":"Morire a Tokyo vestito di blu","registered_at":"2026-06-24T14:37:42Z","spotify_id":"5hgfYP1MlHje1ZwEYdBLif","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e473fd56f2a8a157d73b4ea59d2d2323a27421d55dfa6f8986db94ca3851afc. 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/5hgfYP1MlHje1ZwEYdBLif.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/5hgfYP1MlHje1ZwEYdBLif.