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 0x209bcca3c1625d3ae2f09a54448841bd3eaec969bb3bcac7fedf18fdf860477d. 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/de690677-5dab-40da-89ef-d49ba44e058e.json and https://artists.proofprofile.net/proofs/artist/de690677-5dab-40da-89ef-d49ba44e058e.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 0x6a78a2180068f27fe420514f554f5b14307886bfbb2801478b70aa310f44e120. 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/3f9X0GdtSSq06xZVJZ5S5T.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/3f9X0GdtSSq06xZVJZ5S5T.
{"copyright_id":"0xd8abcff5bd2e8f4c3f63f41bf526b117bdaa8e58ba3dfec0ab89e48fa3d458c3","isrc":"USL2S0420150","name":"Bless The Broken Road","registered_at":"2026-06-01T05:48:52Z","spotify_id":"4YjjNHtEsTX6Af4mCTupT5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8abcff5bd2e8f4c3f63f41bf526b117bdaa8e58ba3dfec0ab89e48fa3d458c3. 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/4YjjNHtEsTX6Af4mCTupT5.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/4YjjNHtEsTX6Af4mCTupT5.
{"copyright_id":"0x1d9e273fe8f0d7531bf0afd42820f134b4f16c9c90d022ea301f583b62746d4d","isrc":"USCJY1112131","name":"Come Wake Me Up","registered_at":"2026-06-04T09:58:51Z","spotify_id":"5mCttXluvE0gaIArboAoFA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9e273fe8f0d7531bf0afd42820f134b4f16c9c90d022ea301f583b62746d4d. 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/5mCttXluvE0gaIArboAoFA.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/5mCttXluvE0gaIArboAoFA.
Cars (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2e90207abf85cffc083153eaf7eb13d3315a3744a92066fbf45b88c29d00f5. 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/5gB2IrxOCX2j9bMnHKP38i.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/5gB2IrxOCX2j9bMnHKP38i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee20786719ccc86c8279390274fa85c5fb4521b7a5c5ee2bc5ac13955947e825. 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/42wmRq3kfUUuyszlkWQbPS.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/42wmRq3kfUUuyszlkWQbPS.
{"copyright_id":"0xeacf459e4fbff0275babd2722a738ef9f1534354d6cd524bfc1b3a87254111d6","isrc":"USUM70741929","name":"Faith In Love","registered_at":"2026-06-17T23:29:51Z","spotify_id":"04mNpzR8yrzgTVME1nIt4e","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacf459e4fbff0275babd2722a738ef9f1534354d6cd524bfc1b3a87254111d6. 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/04mNpzR8yrzgTVME1nIt4e.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/04mNpzR8yrzgTVME1nIt4e.
Testimony: Vol. 1 Life & Relationship (Deluxe eAlbum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f43042fd38bea9d8e9cd4ad69d5bec9b42eb359b9e5dddf67f4dbce5c9fb31. 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/7pDFfaPxKGDXhsZbNwI3KU.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/7pDFfaPxKGDXhsZbNwI3KU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f43042fd38bea9d8e9cd4ad69d5bec9b42eb359b9e5dddf67f4dbce5c9fb31. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5SYdsePqlaYLFB9mhXc14X.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/5SYdsePqlaYLFB9mhXc14X.
{"copyright_id":"0xdd5f661eafe0fd5dab43de57bb64ec413c232f83d765267bba33e4b16ec96a91","isrc":"USA5W1900249","name":"Until Grace","registered_at":"2026-06-04T06:46:51Z","spotify_id":"52stVyuGiZ0QOWAAb27ZY4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5f661eafe0fd5dab43de57bb64ec413c232f83d765267bba33e4b16ec96a91. 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/52stVyuGiZ0QOWAAb27ZY4.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/52stVyuGiZ0QOWAAb27ZY4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d51796887b225989140da3f7797e8c720e7b84c69a64247f0edd9115ff5c2aa. 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/3irGSo24JJ64y3fe1sOcXa.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/3irGSo24JJ64y3fe1sOcXa.
{"copyright_id":"0x2a8c3aea3cc6c76ddfc275b14289ef5535ad1461578b45194a5f38f6554a9cbe","isrc":"USL2S0520197","name":"What Hurts The Most","registered_at":"2026-06-25T15:56:09Z","spotify_id":"0l9EPJWkYV0PLNZLoT12rS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8c3aea3cc6c76ddfc275b14289ef5535ad1461578b45194a5f38f6554a9cbe. 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/0l9EPJWkYV0PLNZLoT12rS.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/0l9EPJWkYV0PLNZLoT12rS.
Life is a Highway - From "Cars"/Soundtrack Version
{"copyright_id":"0x0b2e90207abf85cffc083153eaf7eb13d3315a3744a92066fbf45b88c29d00f5","isrc":"USWD10628832","name":"Life is a Highway - From \"Cars\"/Soundtrack Version","registered_at":"2026-06-01T04:39:35Z","spotify_id":"2TF5hGCIRcrpIHr1ueryfg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2e90207abf85cffc083153eaf7eb13d3315a3744a92066fbf45b88c29d00f5. 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/2TF5hGCIRcrpIHr1ueryfg.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/2TF5hGCIRcrpIHr1ueryfg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d51796887b225989140da3f7797e8c720e7b84c69a64247f0edd9115ff5c2aa. 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/7Bj2zJtuL5vNvPGeHIToYt.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/7Bj2zJtuL5vNvPGeHIToYt.