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 0x81cf0ef00507ac05b210e3924fa3b6b087d20a3f7b2411636ccfb10f4bc523e2. 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/cf0ae4a8-4a82-44d0-b2c2-3bb9e686eae7.json and https://artists.proofprofile.net/proofs/artist/cf0ae4a8-4a82-44d0-b2c2-3bb9e686eae7.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 0x2857826439fe4ff8efe6e842b13d3bb1861c7ee79c01423ddf8b3affd80b0b2e. 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/3WD2cic9S2VrGIb6h114MM.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/3WD2cic9S2VrGIb6h114MM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedffa16ba782920c3bee552a67881f481b1693b856977816f492ed27b17228ff. 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/3x83QOXdKdlc5J6FRjaNWC.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/3x83QOXdKdlc5J6FRjaNWC.
{"copyright_id":"0x446b9bc4abe959a7ace57d0c1adaae2e16c3144fe02a0ab95db6ba1bc2eb665b","isrc":"QZJ842001740","name":"Let U Go","registered_at":"2026-06-04T16:10:07Z","spotify_id":"36Xsh64V0oMrYNHOhtSM5v","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446b9bc4abe959a7ace57d0c1adaae2e16c3144fe02a0ab95db6ba1bc2eb665b. 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/36Xsh64V0oMrYNHOhtSM5v.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/36Xsh64V0oMrYNHOhtSM5v.
Oliver (feat. AG Club, Jody Fontaine, P-Lo, Michael Sneed)
{"copyright_id":"0xb11f263b8537fecbd7f8044911f4954fa813c37d05048fe2abbbafa1d0b123f5","isrc":"QM24S2406511","name":"Oliver (feat. AG Club, Jody Fontaine, P-Lo, Michael Sneed)","registered_at":"2026-06-29T12:46:12Z","spotify_id":"2wK37qiB7Ma2Id4dV8AYTf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11f263b8537fecbd7f8044911f4954fa813c37d05048fe2abbbafa1d0b123f5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2wK37qiB7Ma2Id4dV8AYTf.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/2wK37qiB7Ma2Id4dV8AYTf.
Oliver - feat. P-Lo, Jody Fontaine, Michael Sneed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9a2f5a77406553530f8c78817bb6b047c9deca3670da70502440cc55bf3d00. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/37Vdq36xxwKy1oYI4OfmUb.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/37Vdq36xxwKy1oYI4OfmUb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63c19fbd615aa776f7f08a4bec3830045896feb0abb9caefe84a525ba98d76d. 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/11CL1qZhhP6aGufOCroYop.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/11CL1qZhhP6aGufOCroYop.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643b9c2dce505bd3a01ab7846a98c34d7d365cb6469ff5289eb431abf9cde5d3. 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/3sFaA3TMlGGL1K7HdcK6dc.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/3sFaA3TMlGGL1K7HdcK6dc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2857826439fe4ff8efe6e842b13d3bb1861c7ee79c01423ddf8b3affd80b0b2e. 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/5Ouecrx8aIw6MKZ0SwTeas.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/5Ouecrx8aIw6MKZ0SwTeas.
{"copyright_id":"0x25845de6dcb7c9fef8b1c9c26588d9188c3a24efac289d5f06aeab45ec5c99dd","isrc":"QZJ842000831","name":"LEAVE ME","registered_at":"2026-06-05T20:23:56Z","spotify_id":"7guEqTanZHLYAeb90Cib59","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25845de6dcb7c9fef8b1c9c26588d9188c3a24efac289d5f06aeab45ec5c99dd. 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/7guEqTanZHLYAeb90Cib59.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/7guEqTanZHLYAeb90Cib59.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b723c122b6749773ec430bbe66726a67f1cd53e12b4f8240292afd01f9cb0f. 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/5eZ0RD7mcTXTaZPcxJJ0cC.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/5eZ0RD7mcTXTaZPcxJJ0cC.
{"copyright_id":"0x53bb522a2ee832a997ae7d5b0aada94b0d41d61e7d2dc98b593cf0f9ab986da3","isrc":"QZJ842002241","name":"My Favorite Sweater","registered_at":"2026-06-08T18:03:07Z","spotify_id":"7jya9xtaWjYUxKNKNPRHXk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bb522a2ee832a997ae7d5b0aada94b0d41d61e7d2dc98b593cf0f9ab986da3. 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/7jya9xtaWjYUxKNKNPRHXk.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/7jya9xtaWjYUxKNKNPRHXk.