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 0xa50c5dea2e139d610f05f12d8937f40d3619734a7f14e7ee6dc8a900575baa87. 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/d9a7035c-2f02-4cca-8617-8ce2297df86f.json and https://artists.proofprofile.net/proofs/artist/d9a7035c-2f02-4cca-8617-8ce2297df86f.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 0x6a7172922ff7e3befa7fc6677e47031b4160782c3f2c3928a8a69e1ae2c12ac0. 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/0Hjn8JrJ7Ko8PHLV27NhCy.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/0Hjn8JrJ7Ko8PHLV27NhCy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400119b8cba6523ca82660e7a9986808770fc2b682a51369b217fafc5cc3686d. 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/66qGOMolOBC3u4XuPu0TAs.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/66qGOMolOBC3u4XuPu0TAs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85efbff5458ebd6bf770019bef03a3d11ad55320516387fae8e9c478584b28cb. 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/6x6IIkINP18XDSw33DOVf8.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/6x6IIkINP18XDSw33DOVf8.
Jumanji - Discoshaman , Alvaro Suarez Remix
{"copyright_id":"0xe7a3910dda0716a496f790dd866fa6312d18a89df00c8c7c8f90248647fc42ea","isrc":"US83Z1825138","name":"Jumanji - Discoshaman , Alvaro Suarez Remix","registered_at":"2026-06-19T13:06:01Z","spotify_id":"7xD05fdhUb6LNfS2XIKnVl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a3910dda0716a496f790dd866fa6312d18a89df00c8c7c8f90248647fc42ea. 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/7xD05fdhUb6LNfS2XIKnVl.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/7xD05fdhUb6LNfS2XIKnVl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0b1394155c2baedb64769ca64fb6776e9d5df5238459d09a3587a706ad88de. 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/6KGQ0X9xWbkxtB2R1xNu1v.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/6KGQ0X9xWbkxtB2R1xNu1v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8f6011723f39abc4f629d05d37b45b2ed063866009715a8c56abb60cc7fc7b. 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/5LAaWbT4X6DmewC0yCfdjL.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/5LAaWbT4X6DmewC0yCfdjL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb40db04ee7f7ea4898c924bebc4d615e966a9e2326f67b6f5a650454f67d070. 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/57WcQs1zYSQUzILEJ7KKAa.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/57WcQs1zYSQUzILEJ7KKAa.
{"copyright_id":"0x02dee267ed8c925206c7ba8e7b05452fa8676ecc739645fed3abfc831154aa28","isrc":"US83Z2047339","name":"Sirio - Derrok Remix","registered_at":"2026-06-24T21:58:46Z","spotify_id":"3LrSImcwCakQGo0jFGmCfU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dee267ed8c925206c7ba8e7b05452fa8676ecc739645fed3abfc831154aa28. 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/3LrSImcwCakQGo0jFGmCfU.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/3LrSImcwCakQGo0jFGmCfU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743094e02e7007863864b5ce12dd2c4323901903015fe62fbb24282908448484. 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/1SdttjFkhPxU9eGGZPoRLO.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/1SdttjFkhPxU9eGGZPoRLO.
Chunyaxche - Rogerio Lopez & Kaatniss Remix
{"copyright_id":"0x5d15067520a176cfc86718acf232402b1da14f44f1d1d04cff2a25ef9a84aa9f","isrc":"US83Z2511050","name":"Agua - Zuma Dionys Remix","registered_at":"2026-06-28T19:24:15Z","spotify_id":"3lTtmKqtEBsIPmUhiQLx51","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d15067520a176cfc86718acf232402b1da14f44f1d1d04cff2a25ef9a84aa9f. 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/3lTtmKqtEBsIPmUhiQLx51.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/3lTtmKqtEBsIPmUhiQLx51.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb974d6085e5a2e53f073f1df1b8f3a3df7b7c85eac031d1f04df4269359675ca. 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/45u2Q9YkyETvKnzLu0B3iV.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/45u2Q9YkyETvKnzLu0B3iV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6118ad8713325e2bd49cdf8f86227eecf292aa11dd545b3f9fd546347b4d62fb. 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/1C5qXRXN97qJXCBPswO8DJ.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/1C5qXRXN97qJXCBPswO8DJ.
Shafa Donneya - Lemurian & Alvaro Suarez Remix
Bar 25 Music Presents: Sounds of Sirin Vol.8
{"copyright_id":"0xe5d66b59973a2fc83bef796e3b3dbcbd0fb581ac0b7fe119ba4c430af939cb00","isrc":"ATDY81900027","name":"Life is a Ceremony","registered_at":"2026-06-08T14:22:37Z","spotify_id":"3vi9NdPlKlS6iQi5yfzn7s","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d66b59973a2fc83bef796e3b3dbcbd0fb581ac0b7fe119ba4c430af939cb00. 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/3vi9NdPlKlS6iQi5yfzn7s.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/3vi9NdPlKlS6iQi5yfzn7s.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0b1394155c2baedb64769ca64fb6776e9d5df5238459d09a3587a706ad88de. 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/3bbqnPK7AkxoaXDcIFzT03.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/3bbqnPK7AkxoaXDcIFzT03.
Shafa Donneya - Lemurian & Alvaro Suarez Remix - Mixed