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 0x60c37b9c9dfe675b73e4e5f2a1f597cf8dac4803a580ba02908b95f45bebab78. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa3e13b3-11f7-4670-82c8-2e0b0288e4b1.json and https://artists.proofprofile.net/proofs/artist/aa3e13b3-11f7-4670-82c8-2e0b0288e4b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xfbe2b47e0f43c86b9f12a937e73df827ae23fa533b3d6c83307320e1ad9b5d9d","isrc":"GBPWR2400054","name":"Everything You Say","registered_at":"2026-06-07T14:22:40Z","spotify_id":"06EoU53YEsxVbSZh1vobeI","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 0xfbe2b47e0f43c86b9f12a937e73df827ae23fa533b3d6c83307320e1ad9b5d9d. 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/06EoU53YEsxVbSZh1vobeI.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/06EoU53YEsxVbSZh1vobeI.
{"copyright_id":"0x8d02d43df91bf1511f909df8c3a8733d0396a87afb8f9c625bfdec712547c00b","isrc":"US38Y2312532","name":"Back In Time (feat. Ekstatic)","registered_at":"2026-06-06T04:14:13Z","spotify_id":"0izWMphY9gLV6Rvg4b9Xod","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d02d43df91bf1511f909df8c3a8733d0396a87afb8f9c625bfdec712547c00b. 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/0izWMphY9gLV6Rvg4b9Xod.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/0izWMphY9gLV6Rvg4b9Xod.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a30685ed45c87e69415c7a35014f4c43c5677f5fac83c78e7fda328b44172. 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/3zK5CefZHQYy9Wi5mkSYhr.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/3zK5CefZHQYy9Wi5mkSYhr.
{"copyright_id":"0xb4a7db0ae42d5740a533d1fca4bca90c41fcd7333560205ca974b89bc005b27d","isrc":"GB8KE2306802","name":"Cowboy - Primate Remix","registered_at":"2026-06-06T11:40:25Z","spotify_id":"6n5laDuCJW4Nis3pvR79Vq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a7db0ae42d5740a533d1fca4bca90c41fcd7333560205ca974b89bc005b27d. 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/6n5laDuCJW4Nis3pvR79Vq.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/6n5laDuCJW4Nis3pvR79Vq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42db70da670f19372173b7fd37a4e234c9d13b5e11d24d368b4cd9a9c788fe2c. 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/3HEF99Q49J1hYMGbTPJStP.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/3HEF99Q49J1hYMGbTPJStP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c35672c9e2cc3a892283a4fd03570c5e678556e55afbc310344e5858ab21d0. 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/5Q2SxIVaJHjruuQDHvHzBE.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/5Q2SxIVaJHjruuQDHvHzBE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14368d955a9333751f8aae1a7ca4782cc5f4b75aaabb684eec1664206bbb6d00. 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/5zU1sfwLbsSupy53CNrckj.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/5zU1sfwLbsSupy53CNrckj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82037b1d7a97f26ec0450716e077166301fd3a151a8bdb21099a3a59dc35c3c3. 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/01k08V7Do2sh0OgpVyejcS.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/01k08V7Do2sh0OgpVyejcS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42db70da670f19372173b7fd37a4e234c9d13b5e11d24d368b4cd9a9c788fe2c. 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/3yvbYvhWoedKyQuLKjGyoD.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/3yvbYvhWoedKyQuLKjGyoD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344. 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/6H73og2iZSFP9xJrmU9sn1.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/6H73og2iZSFP9xJrmU9sn1.
{"copyright_id":"0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344","isrc":"GBTMZ2401252","name":"Third Eye (Primate Remix)","registered_at":"2026-06-08T19:13:16Z","spotify_id":"2YUUXDiC62BpF3JYwNEPLY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2YUUXDiC62BpF3JYwNEPLY.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/2YUUXDiC62BpF3JYwNEPLY.
{"copyright_id":"0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344","isrc":"GBTMZ2401252","name":"Third Eye (Primate Remix)","registered_at":"2026-06-08T19:13:16Z","spotify_id":"1fACaEajlIlnMjFPHW0ccG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1fACaEajlIlnMjFPHW0ccG.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/1fACaEajlIlnMjFPHW0ccG.
{"copyright_id":"0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344","isrc":"GBTMZ2401252","name":"Third Eye (Primate Remix)","registered_at":"2026-06-08T19:13:16Z","spotify_id":"1FnyAoSes08T5vOs8J8Wfc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344. 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/1FnyAoSes08T5vOs8J8Wfc.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/1FnyAoSes08T5vOs8J8Wfc.
{"copyright_id":"0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344","isrc":"GBTMZ2401252","name":"Third Eye (Primate Remix)","registered_at":"2026-06-08T19:13:16Z","spotify_id":"5n4nmUhcrtVERppNQ21rX5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344. 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/5n4nmUhcrtVERppNQ21rX5.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/5n4nmUhcrtVERppNQ21rX5.
{"copyright_id":"0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344","isrc":"GBTMZ2401252","name":"Third Eye (Primate Remix)","registered_at":"2026-06-08T19:13:16Z","spotify_id":"6eOykyVuiwMw3YiAALZg00","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85563a1e04b787bb80c0a129a159bff0db1f0900ed4e516ae05eb641b83b9344. 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/6eOykyVuiwMw3YiAALZg00.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/6eOykyVuiwMw3YiAALZg00.