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 0xfe71f7f00ab28834a6684fae4bd5dc2e7c085a0b5265740de5dd7659c9fe55b5. 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/a503ba1a-e694-40fa-ba3f-203698a747e9.json and https://artists.proofprofile.net/proofs/artist/a503ba1a-e694-40fa-ba3f-203698a747e9.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 0x404819ce6c33e9098cc236b1a82f918d9f5b0f7a68581c2fdec66615894cb216. 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/5nwcAxBKTMiMvgIh3aH5Ts.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/5nwcAxBKTMiMvgIh3aH5Ts.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4269730015e2ab3b68009131e5185405211534f88c7b6e7106fa944b2749a8. 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/3xnJp1P2K26Np5ACAX9P1e.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/3xnJp1P2K26Np5ACAX9P1e.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8488ce1b405369b2357cda1ac9cc8cfcd4af5d73d498c39608c4e573acec0868. 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/001eaev4Trtk1iI96C6zhe.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/001eaev4Trtk1iI96C6zhe.
{"copyright_id":"0x033153ee93fc4005bcb66ceb85067f6cd7a1f3e5c47d93b67a707edcd52f0d58","isrc":"QZTB82233327","name":"How can you truly feel","registered_at":"2026-06-18T07:57:53Z","spotify_id":"4AJfMmS77EL8EkXlqd7Ysa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033153ee93fc4005bcb66ceb85067f6cd7a1f3e5c47d93b67a707edcd52f0d58. 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/4AJfMmS77EL8EkXlqd7Ysa.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/4AJfMmS77EL8EkXlqd7Ysa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e789908419c7b9039eb2123b399ff8e6450a068c928f146379c4b387e2f2372. 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/1aEco2DAZAbUVnhQPJenIV.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/1aEco2DAZAbUVnhQPJenIV.
{"copyright_id":"0x5c7aef7cc4848468cb8269bd6b71a4a84ac7f1a99501930bd4a352ffdfccee6f","isrc":"QZMEM2215858","name":"Atomic habits","registered_at":"2026-06-10T09:50:01Z","spotify_id":"7Ln3MyF8AU0BdA15Eg990V","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7aef7cc4848468cb8269bd6b71a4a84ac7f1a99501930bd4a352ffdfccee6f. 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/7Ln3MyF8AU0BdA15Eg990V.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/7Ln3MyF8AU0BdA15Eg990V.
{"copyright_id":"0x5ecde77d3c8d3c89548dcb5d4df0cdc6af8d01c4dfb329718a24142eb718c883","isrc":"QZHN52267061","name":"On the Line","registered_at":"2026-06-09T00:26:48Z","spotify_id":"5XQG8UuJXzn18Qxr3Yo7is","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecde77d3c8d3c89548dcb5d4df0cdc6af8d01c4dfb329718a24142eb718c883. 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/5XQG8UuJXzn18Qxr3Yo7is.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/5XQG8UuJXzn18Qxr3Yo7is.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b3b0c33acc3e15a3661e62f35bcea7584edf5f1e03cb0ad9068de3a1330a53. 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/2kqDuU9rvYkvKodk6NSJj1.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/2kqDuU9rvYkvKodk6NSJj1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2e6f67a96406d2d93e56f8d3b86256270e0ac90713a99866ee859723b4208f. 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/2gWCd7RAmprYP6kzgZu1QW.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/2gWCd7RAmprYP6kzgZu1QW.