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 0x06b886949f6b7cf1d747a0f1d678882a0045391f445d49241f259eb1298135f3. 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/5eba77b0-483e-4ebf-943e-037e8deff695.json and https://artists.proofprofile.net/proofs/artist/5eba77b0-483e-4ebf-943e-037e8deff695.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x44db31d9563225e6dd0a9e740a8d52aedb11b347eb2c74105db6dc3e3e9bbd2e","isrc":"GBRKQ2249113","name":"Sunny Day","registered_at":"2026-06-18T22:48:54Z","spotify_id":"02S4MNZg0qd3EQYq6jClfC","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 0x44db31d9563225e6dd0a9e740a8d52aedb11b347eb2c74105db6dc3e3e9bbd2e. 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/02S4MNZg0qd3EQYq6jClfC.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/02S4MNZg0qd3EQYq6jClfC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0e576f4e2eacb3f8abbd3e20040de8d5c88a10dc43ec397bf4fd2900aa29b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4GGw7ltOHTgeElQVIvsjRc.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/4GGw7ltOHTgeElQVIvsjRc.
{"copyright_id":"0xf44b53ad59275c119b6b6a853c4bd9b24042c95456d51c6454c2c5b025dedc49","isrc":"QZTRX2225165","name":"Live That Way","registered_at":"2026-06-09T21:32:44Z","spotify_id":"1HIxxzhPJFYQTyGvx2yRIb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44b53ad59275c119b6b6a853c4bd9b24042c95456d51c6454c2c5b025dedc49. 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/1HIxxzhPJFYQTyGvx2yRIb.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/1HIxxzhPJFYQTyGvx2yRIb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44b53ad59275c119b6b6a853c4bd9b24042c95456d51c6454c2c5b025dedc49. 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/0AYTaClw0Oggc1RC0vz2WM.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/0AYTaClw0Oggc1RC0vz2WM.
{"copyright_id":"0x44db31d9563225e6dd0a9e740a8d52aedb11b347eb2c74105db6dc3e3e9bbd2e","isrc":"GBRKQ2249113","name":"Sunny Day","registered_at":"2026-06-18T22:48:54Z","spotify_id":"1N9ghrvyd7e0c5LfYvQ5iz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44db31d9563225e6dd0a9e740a8d52aedb11b347eb2c74105db6dc3e3e9bbd2e. 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/1N9ghrvyd7e0c5LfYvQ5iz.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/1N9ghrvyd7e0c5LfYvQ5iz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa012c35b67d4f361b707d025b16b9484dff46855422dad2caa007d180308cb3f. 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/1JVHv57ZWaoI4qPlV3jb0G.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/1JVHv57ZWaoI4qPlV3jb0G.
{"copyright_id":"0x54e226f04a4badd7c62620dfd58eff5a58ccb399e04f4d5e361079bce1b7f0af","isrc":"TCADP1800416","name":"Don't Tell Me","registered_at":"2026-06-08T23:37:29Z","spotify_id":"6DpYCc6cBSxZsvArsEJett","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e226f04a4badd7c62620dfd58eff5a58ccb399e04f4d5e361079bce1b7f0af. 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/6DpYCc6cBSxZsvArsEJett.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/6DpYCc6cBSxZsvArsEJett.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53f77041849f9a530213139073e615f5bd46e8c55517ea692b0419f3cdac49d. 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/71P1pTSeHiAWgRWCnj1AIQ.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/71P1pTSeHiAWgRWCnj1AIQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b7566b64e6a86df2618868896d728fdc78afb770ff6f1cc64c8e03b0a3ebbb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3ktRM2yKFe07LO380sSIqT.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/3ktRM2yKFe07LO380sSIqT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdad970c8180abfc24173220640e7f5ea3465cb42b6d44df5ae5181e87e0b7c. 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/0Edx974Y68zKixPdKAoWAg.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/0Edx974Y68zKixPdKAoWAg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79796872fddd97c96dce0bb76cf8a79148cbd161d69623f5c17b40cbcb141361. 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/48D8N4hwJJCWnSn6FQtO86.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/48D8N4hwJJCWnSn6FQtO86.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2767dad36d1e291f7c5397ff23812d53c915c528671f7181a59007c513604469. 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/4OdWwmGVt1XhIPVErH7mTQ.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/4OdWwmGVt1XhIPVErH7mTQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f41912aab92601172bd4ff93af8c03346f10b1f65dd6840143b6f44a9e3837. 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/6CM9W3kkJVFUucIAcYj8Nj.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/6CM9W3kkJVFUucIAcYj8Nj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8716e72348f641a32db63e12d0c58a074420af3ad7dbf33a2be6bda3d430b61. 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/39079pHH45mxeXcM0pNRtI.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/39079pHH45mxeXcM0pNRtI.
{"copyright_id":"0xfcb0f1133926937da6829cfe4179522a22c29bd18661c60f9b993d994dfaca16","isrc":"TCADP1800443","name":"Something More","registered_at":"2026-06-10T08:01:46Z","spotify_id":"3tvovdnrQDv1rR2QkZkYZJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb0f1133926937da6829cfe4179522a22c29bd18661c60f9b993d994dfaca16. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3tvovdnrQDv1rR2QkZkYZJ.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/3tvovdnrQDv1rR2QkZkYZJ.
{"copyright_id":"0xb93c980fd0e4a32e7fce8dfaca7fcca5ebc71277c5e8596726d9f582bf914c8f","isrc":"TCADG1770369","name":"Fly Away (feat. Bret Bollinger)","registered_at":"2026-06-27T17:56:23Z","spotify_id":"0Caau7OsICwfPV2nR6D3p3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93c980fd0e4a32e7fce8dfaca7fcca5ebc71277c5e8596726d9f582bf914c8f. 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/0Caau7OsICwfPV2nR6D3p3.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/0Caau7OsICwfPV2nR6D3p3.