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 0x0233a33559e7e1aa81aae3d5be4ebd5019efc7905859ab88ffe9fb5b566b1415. 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/10010734-ae36-4119-9c9e-a4573044ed64.json and https://artists.proofprofile.net/proofs/artist/10010734-ae36-4119-9c9e-a4573044ed64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x728e5ab291e6d547537572642cbdfd4caba637e7eae416b07fe7fa2f0e915eb9","isrc":"FRR642300097","name":"Critical Battery","registered_at":"2026-06-21T12:27:23Z","spotify_id":"1YlVA7PaB8LGHUTAEnsrIL","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 0x728e5ab291e6d547537572642cbdfd4caba637e7eae416b07fe7fa2f0e915eb9. 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/1YlVA7PaB8LGHUTAEnsrIL.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/1YlVA7PaB8LGHUTAEnsrIL.
{"copyright_id":"0x8ba30998deb2a203346abb7eb7868c3c060fe5884e2b80ce09782ea32ec44785","isrc":"FRR642300098","name":"Test Section Disk","registered_at":"2026-06-11T19:27:55Z","spotify_id":"2SHiY0FiUddtaHYvIGYJOo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba30998deb2a203346abb7eb7868c3c060fe5884e2b80ce09782ea32ec44785. 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/2SHiY0FiUddtaHYvIGYJOo.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/2SHiY0FiUddtaHYvIGYJOo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556fbd002c504e86788fd1bcc5e59a2e84fd0b7508355c908ee5b718239ca4a8. 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/0tfxFCaPtsdj6ngHnahQFd.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/0tfxFCaPtsdj6ngHnahQFd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa690db8a43accfe8c18b3c3ed11a33e033482881094ef05fb9c90ba192220c0e. 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/3H5w6iUoIJC2jtYrZjhXua.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/3H5w6iUoIJC2jtYrZjhXua.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcb2cf8b177964ec32db815d42e056a02843c86708940b10515481ca63781ea. 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/22ysytGWVn6vhsW7guBjLw.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/22ysytGWVn6vhsW7guBjLw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda233cb8cc356a9e0a917a897ec50bbdb2faf28cacb55f23eeaf79bcc5e0738. 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/58GjOpcHT33yLBwzpRQYgN.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/58GjOpcHT33yLBwzpRQYgN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b820e08f90997988cc59d53c28a0de5d7c19939728eef0ec6a9f4da55bfbe8e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/36lPj17GZdsXfIbhICUaRq.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/36lPj17GZdsXfIbhICUaRq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be26f452750496969662f99fa4804175f1360ea23a1d1aec7f9e0f639c984e3. 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/0iqIlRnGz35uXwwUb9BUpU.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/0iqIlRnGz35uXwwUb9BUpU.
{"copyright_id":"0x728e5ab291e6d547537572642cbdfd4caba637e7eae416b07fe7fa2f0e915eb9","isrc":"FRR642300097","name":"Critical Battery","registered_at":"2026-06-21T12:27:23Z","spotify_id":"4HR9HEJrwkltRFNsSm2wGE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728e5ab291e6d547537572642cbdfd4caba637e7eae416b07fe7fa2f0e915eb9. 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/4HR9HEJrwkltRFNsSm2wGE.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/4HR9HEJrwkltRFNsSm2wGE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302768887fc3fe55ba2d68bb361a8f0981953a5c56ba58c95eeb07311ea08d7f. 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/4OEeIrBPWlMFst0wxrGAwk.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/4OEeIrBPWlMFst0wxrGAwk.
Star System/Don't Know EP + Vitess and NTFO remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa690db8a43accfe8c18b3c3ed11a33e033482881094ef05fb9c90ba192220c0e. 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/38aqU1aWbzveeeopFPgZtR.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/38aqU1aWbzveeeopFPgZtR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda233cb8cc356a9e0a917a897ec50bbdb2faf28cacb55f23eeaf79bcc5e0738. 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/5iiIkc136mJJAgnzRDa3WD.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/5iiIkc136mJJAgnzRDa3WD.