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 0x0fb9223bf65f6386e300acdf411897c90d931317c6c82f502edb4c2574a8a33f. 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/a3588ade-7151-405e-9488-f31f4996cd13.json and https://artists.proofprofile.net/proofs/artist/a3588ade-7151-405e-9488-f31f4996cd13.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 0xd98c3d6b4ad142601fe3f33753a7b881106b05a1de81542b087444ee16e99b6c. 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/6QLcgTd4x8YsrVzo7txqzT.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/6QLcgTd4x8YsrVzo7txqzT.
{"copyright_id":"0xefbd7c1ad5174bc576ac3e44f91a29af3f51bf54da8a6f97481121837678d1dd","isrc":"NLRD51632967","name":"Wherever You Go","registered_at":"2026-06-19T13:08:16Z","spotify_id":"7eGesoKVNP8jJig7xgmk3t","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbd7c1ad5174bc576ac3e44f91a29af3f51bf54da8a6f97481121837678d1dd. 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/7eGesoKVNP8jJig7xgmk3t.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/7eGesoKVNP8jJig7xgmk3t.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98c3d6b4ad142601fe3f33753a7b881106b05a1de81542b087444ee16e99b6c. 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/7MjFOXSToLFNQHenfwKRgr.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/7MjFOXSToLFNQHenfwKRgr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4084f2dbcdc10f3c1d578f78401102d39829297f4f21aee216911bab58ed318. 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/0FsZg7IZAf6ZMU3J7oUvtQ.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/0FsZg7IZAf6ZMU3J7oUvtQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4084f2dbcdc10f3c1d578f78401102d39829297f4f21aee216911bab58ed318. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1tziQLnwIV0WHbyrlSAk2R.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/1tziQLnwIV0WHbyrlSAk2R.
{"copyright_id":"0x82dcd83cbb0d416daa26c2cf0ec144fb088b87427666ee4184255b7427f6cc97","isrc":"AUUM72300038","name":"Forever - Pauline Herr Rework","registered_at":"2026-06-17T23:57:30Z","spotify_id":"4461Ozpndhv2AjNqe6d0Ic","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dcd83cbb0d416daa26c2cf0ec144fb088b87427666ee4184255b7427f6cc97. 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/4461Ozpndhv2AjNqe6d0Ic.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/4461Ozpndhv2AjNqe6d0Ic.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eb2a484081d57d6e42d69df42528c8567266e03a956bcbce92e6d173ad83f2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Zn1JQMw8QiWGcUzjyDIzO.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/6Zn1JQMw8QiWGcUzjyDIzO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba05445e398831aba6c0bf9c37321d03020965556ac80a9cb9ba27de3bc6965. 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/5fh9RFDEyziVlhhgmSp5zx.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/5fh9RFDEyziVlhhgmSp5zx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eb2a484081d57d6e42d69df42528c8567266e03a956bcbce92e6d173ad83f2. 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/4koJOexsJfCdpyiWPlu3K9.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/4koJOexsJfCdpyiWPlu3K9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8e5f4dab541fee05fe30efb562e74c32b5ba8104ce5823d4161e58a40a1300. 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/3uP8cwg391jf7zdddSRn4o.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/3uP8cwg391jf7zdddSRn4o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1eeaabddcff8e32fc6609ae9eee430e84f2b29817d001caece314126a3f765. 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/4py3YEvtCSqn8TQfgs9poP.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/4py3YEvtCSqn8TQfgs9poP.